I67.5
Billable codeMoyamoya disease
The ICD-10 code for moyamoya disease is I67.5.
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
- I67.0Dissection of cerebral arteries, nonruptured
- I67.1Cerebral aneurysm, nonruptured
- I67.2Cerebral atherosclerosis
- I67.3Progressive vascular leukoencephalopathy
- I67.4Hypertensive encephalopathy
- I67.6Nonpyogenic thrombosis of intracranial venous system
- I67.7Cerebral arteritis, not elsewhere classified
- I67.8Other specified cerebrovascular diseasesnon-billable header
- I67.9Cerebrovascular disease, unspecified
- I67.5Moyamoya disease
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 4375
Associated MS-DRGs
I67.5 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.