Schizophrenia E006

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/sops-grouped-icd-body-system/q-z/schizophrenia-e006-f200-f203f205f209

Last amended

Rulebase for schizophrenia

<h5><strong>Current RMA Instruments</strong></h5><table class="table" border="1" cellspacing="1" cellpadding="1"><tbody><tr><td><address><p><a href="https://www.rma.gov.au/assets/SOP/2026/027.pdf&quot; target="_blank">Reasonable Hypothesis SOP</a></p></address></td><td>27 of 2026</td></tr><tr><td><address><p><a href="https://www.rma.gov.au/assets/SOP/2026/028.pdf&quot; target="_blank">Balance of Probabilities SOP</a></p></address></td><td>28 of 2026</td></tr></tbody></table><h5><strong>Changes from previous Instruments</strong></h5><drupal-media data-entity-type="media" data-entity-uuid="ea8b85bf-0950-4642-be99-88354108a459"> </drupal-media><h5> </h5><h5><strong>ICD Coding</strong></h5><ul><li>ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9</li></ul><h5><strong>Brief description</strong></h5><p>Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. </p><h5><strong>Confirming the diagnosis</strong></h5><p>Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.</p><h5><strong>Additional diagnoses covered by SOP</strong></h5><ul><li>Catatonic schizophrenia</li><li>Hebephrenic (disorganised) schizophrenia</li><li>Paranoid schizophrenia</li><li>Residual schizophrenia</li></ul><h5><strong>Conditions not covered by SOP</strong></h5><ul><li>Acute schizophrenic (like) episode #</li><li>Latent schizophrenia #</li><li>Mood disorders with psychotic features #</li><li>Psychosis due to the direct physiological effects of a substance #</li><li>Schizoaffective disorder #</li><li>Schizoid personality disorder #</li><li>Simple schizophrenia #</li></ul><p> </p><p>* another SOP applies - <span>the SOP has the same name unless otherwise specified</span></p><p><sup>#</sup> non-SOP condition</p><h5><strong>Clinical onset</strong></h5><p>Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. </p><h5><strong>Clinical worsening</strong></h5><p>The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. </p><p>Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. </p><p> </p>

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/rulebase-schizophrenia

A category 1A stressor

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/category-1a-stressor

A category 1B stressor

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/category-1b-stressor

A clinically significant psychiatric condition

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/clinically-significant-psychiatric-condition

A course of therapeutic radiation to the brain

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/course-therapeutic-radiation-brain

A drug or a drug from the class of drugs in specified list 1

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/drug-or-drug-class-drugs-specified-list-1

A moderate to severe cerebral trauma

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/moderate-severe-cerebral-trauma

Alcohol dependence or alcohol abuse

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/alcohol-dependence-or-alcohol-abuse

Atomic radiation

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/atomic-radiation

Cessation or reduction of antipsychotic drug therapy

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/cessation-or-reduction-antipsychotic-drug-therapy

Drug dependence or drug abuse for the onset of schizophrenia

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/drug-dependence-or-drug-abuse-onset-schizophrenia

Drug dependence or drug abuse for the worsening of schizophrenia

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/drug-dependence-or-drug-abuse-worsening-schizophrenia

Drug treatment associated with psychotic symptoms

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/drug-treatment-associated-psychotic-symptoms

Inability to obtain appropriate clinical management for schizophrenia

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/inability-obtain-appropriate-clinical-management-schizophrenia

Infection with Toxoplasma gondii

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/infection-toxoplasma-gondii

Severe childhood abuse

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/severe-childhood-abuse

The death of a related child

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/death-related-child

The early-death of a parent

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/early-death-parent

Using cannabis

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/using-cannabis

Viral meningitis or encephalitis or meningoencephalitis

Current RMA Instruments

Reasonable Hypothesis SOP

27 of 2026

Balance of Probabilities SOP

28 of 2026
Changes from previous Instruments
 
ICD Coding
  • ICD-10-AM Codes: F20.0-F20.3, F20.5, F20.9
Brief description

Schizophrenia is a serious mental health disorder characterised by chronic or recurrent episodes of psychosis. Psychosis involves a loss of contact with reality, which may include hallucinations (perceiving things that are not present), delusions (fixed false beliefs), and disorganised thinking or behaviour. The condition may also be associated with reduced emotional expression, social withdrawal, and impaired functioning in daily life. Schizophrenia typically follows a prolonged course, with symptoms persisting or recurring over time. 

Confirming the diagnosis

Diagnosis requires assessment by a specialist psychiatrist. The diagnosis is made clinically, based on the presence of characteristic symptoms and their duration, and requires that symptoms have been present for a significant period and meeting the DSM-5-TR diagnostic criteria.

Additional diagnoses covered by SOP
  • Catatonic schizophrenia
  • Hebephrenic (disorganised) schizophrenia
  • Paranoid schizophrenia
  • Residual schizophrenia
Conditions not covered by SOP
  • Acute schizophrenic (like) episode #
  • Latent schizophrenia #
  • Mood disorders with psychotic features #
  • Psychosis due to the direct physiological effects of a substance #
  • Schizoaffective disorder #
  • Schizoid personality disorder #
  • Simple schizophrenia #

 

* another SOP applies - the SOP has the same name unless otherwise specified

# non-SOP condition

Clinical onset

Clinical onset refers to the earliest time at which symptoms consistent with a schizophrenia were first present. Although the diagnosis requires that symptoms persist for at least 6 months, clinical onset may be backdated to when the first relevant symptoms- such as hallucinations, delusions, or disorganised thinking- were observed. 

Clinical worsening

The course of schizophrenia is variable. Some individuals may experience periods of remission and recovery to a relatively high level of functioning, while others may have persistent symptoms with significant impairment. 

Clinical worsening may be indicated by increased severity or frequency of psychotic symptoms, reduced functioning capacity or relapse following a period of stability. Psychiatric assessment is often required to determine whether any deterioration represents worsening beyond the expected course of the condition. 

 

Source URL: https://clik.dva.gov.au/ccps-medical-research-library/statements-principles/q-z/schizophrenia-e006-f200-f203f205f209/rulebase-schizophrenia/viral-meningitis-or-encephalitis-or-meningoencephalitis