ICD-10-CM 2027
ICD-10 code for brain arteritis
From the official ICD-10-CM alphabetic index entry “Arteritis › brain”. Page updated September 29, 2026.
About coding brain arteritis
The ICD-10-CM code for brain arteritis is I67.7 (Cerebral arteritis, not elsewhere classified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on I67.7.
Within I67 (other cerebrovascular diseases), I67.7 is specifically for cerebral arteritis, not elsewhere classified. Related codes cover dissection of cerebral arteries, nonruptured (I67.0), cerebral aneurysm, nonruptured (I67.1), cerebral atherosclerosis (I67.2), progressive vascular leukoencephalopathy (I67.3), hypertensive encephalopathy (I67.4), Moyamoya disease (I67.5), nonpyogenic thrombosis of intracranial venous system (I67.6), other specified cerebrovascular diseases (I67.8) and 1 more.
Don't report I67.7 together with the conditions in its Excludes1 note: allergic granulomatous angiitis (M30.1).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific brain arteritis codes (official index)
- syphilitic A52.04 — Syphilitic cerebral arteritis
Don't confuse with (Excludes1 for I67.7)
- allergic granulomatous angiitis (M30.1)
Common questions about brain arteritis ICD-10 codes
What is the ICD-10 code for brain arteritis?
- I67.7 — Cerebral arteritis, not elsewhere classified. More specific codes apply when the documentation supports them: A52.04.
What is the ICD-10 code for syphilitic brain arteritis?
- A52.04 — Syphilitic cerebral arteritis.
Is I67.7 billable?
- Yes. I67.7 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I67.7 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I67.7 as a principal diagnosis.
Is I67.7 a CC or MCC?
- I67.7 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.