Date amended:
Statements of Principles
Current RMA Instruments:
Reasonable Hypothesis SOP
31 of 2019
Balance of Probabilities SOP
32 of 2019
Changes from previous Instruments


 ICD Coding
  • ICD-9-CM Codes: 698.0
  • ICD-10-AM Codes: L29.0
Brief description

Chronic pruritis ani is a condition in which there is intense persistent itching of the anus or perianal skin, mostly secondary to inflammatory, infectious, systemic, neoplastic, or anorectal disorders.  The condition is more common in the fourth to sixth decades of life.  Prevalence is higher in males.

Confirming the diagnosis

The diagnosis is made on clinical grounds and can be made by a treating GP.

The relevant medical specialist is a dermatologist.

Additional diagnoses covered by SOP
  • Nil

Conditions not covered by SOP
  • Acute pruritus ani (< 6 weeks duration) - not a disease

Clinical onset

Clinical onset will be based on the time of onset of reported symptoms.

Clinical worsening

The condition is usually responsive to appropriate clinical management and treatment of an underlying condition, if present.