I67.9
BillableCerebrovascular disease, unspecified
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is I67.9 an HCC code?
No. I67.9 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
I67.9 is the ICD-10-CM diagnosis code for cerebrovascular disease, unspecified. This code describes a disease affecting the blood vessels in the brain when the specific type of cerebrovascular condition cannot be determined or is not documented. It is used when a patient has symptoms or evidence of brain blood vessel problems but the exact diagnosis is unclear. I67.9 sits in the ICD-10-CM chapter for diseases of the circulatory system (i00-i99), within the section covering cerebrovascular diseases (i60-i69).
I67.9 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Use this code only when the specific type of cerebrovascular disease (such as stroke, TIA, or aneurysm) cannot be identified from the medical record; always attempt to obtain more specific documentation from the provider before coding to this unspecified level.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for I67.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the specific type of cerebrovascular disease (such as stroke, TIA, or aneurysm) cannot be identified from the medical record; always attempt to obtain more specific documentation from the provider before coding to this unspecified level
- •Review the clinical documentation carefully for any clues about the underlying condition, as more specific codes (I63-I66 range) are preferred and may affect treatment planning and reimbursement