M31.6
Billable codeOther giant cell arteritis
The ICD-10 code for other giant cell arteritis is M31.6.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M31.0Hypersensitivity angiitis
- M31.1Thrombotic microangiopathynon-billable header
- M31.2Lethal midline granuloma
- M31.3Wegener's granulomatosisnon-billable header
- M31.4Aortic arch syndrome [Takayasu]
- M31.5Giant cell arteritis with polymyalgia rheumatica
- M31.7Microscopic polyangiitis
- M31.8Other specified necrotizing vasculopathies
- M31.9Necrotizing vasculopathy, unspecified
- M31.6Other giant cell arteritis
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 4465Approximate match
Associated MS-DRGs
M31.6 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.