You are here
Giant Cell Arteritis G028
Current RMA Instruments:
|Reasonable Hypothesis SOP||71 of 2012|
|Balance of Probabilities SOP||72 of 2012|
Changes from Previous Instruments:
- ICD-9-CM Codes: 446.5
- ICD-10-AM Codes: M31.5, M31.6
This is a type of vasculitis that most commonly involves the large and medium arteries of the head, particularly the temporal arteries.
Is specific diagnostic evidence required to apply the SOP? – No.
However definitive diagnosis generally requires a biopsy of an involved artery.
Are there sub-factors that require specific information? – No.
Additional diagnoses covered by SOP
- Cranial arteritis
- Horton’s disease / syndrome
- Temporal arteritis
If, after applying the above information, you are unable to confirm the diagnosis, you should then:
- seek medical officer advice about further investigation, or;
- generate a diagnostic report, or;
- re-encode the condition, if appropriate.
The following investigations may be useful in establishing the diagnosis.
- Report of an arterial biopsy.
- Report from treating specialist