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Immune Thrombocytopaenic Purpura D008
Current RMA Instruments
|Reasonable Hypothesis SOP||72 of 2008|
|Balance of Probabilities SOP||73 of 2008|
Changes from previous instruments
- ICD-9-CM Codes: 287.3, 287.4
- ICD-10-AM Codes: D69.6
Immune Thrombocytopaenic Purpura is an autoimmune disorder resulting in destruction of platelets and a low platelet count. It can be a stand alone condition or occur in conjunction with another disorder.
Confirming the diagnosis
This diagnosis is complex. Clinical manifestations (bleeding) or a need for treatment are required. Non-immunological causes and haematological disorders also involving other blood components need to be excluded. The condition can be temporary and may no longer be present.
The relevant medical specialist is a haematologist.
Additional diagnoses covered by SOP
- Idiopathic thrombocytopaenic purpura
- Secondary thrombocytopaenic purpura due to immune mechanisms
Conditions that may be covered by SOP
- Drug-induced thrombocytopaenia (can be immune based, due to marrow suppression or due to platelet aggregation)
Conditions not covered by SOP
- Allergic thrombocytopaenia (use ICD-9 287.5; ICD-10 D69.4)
- Essential (haemorrhagic) thrombocythaemia*
- Evan’s syndrome (use ICD-9 287.5; ICD-10 D69.4)
- Non-immunological thrombocytopaenia (use ICD-9 287.5; ICD-10 D69.4)
- Pancytopaenia (ICD-9 284.0-9; ICD-10 D61.3-9)
- Pseudothrombocytopaenia – laboratory artefact, not a disease
- Qualitative platelet defects (ICD-9 287.1; ICD-10 D69.1)
- Thrombocytopaenia in the presence of abnormal red or white cells, code to underlying condition
- Thrombotic thrombocytopaenic purpura (ICD-9 446.6; ICD-10 M31.1)
* another SOP applies
Clinical onset may be when bleeding manifestations were first noticed or may be when a low platelet count was first noted on testing.
This may be evidenced by a fall in the platelet count or more severe bleeding manifestations.