ICD-10 · PDGM grouping
I67 Other cerebrovascular diseases
All 17 codes in the I67 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
17
Can lead a claim
17
Cannot lead a claim
0
What CMS assigns to I67
All 17 codes group to Neuro Rehabilitation (16) and MMTA - Cardiac and Circulatory (1). Comorbidity subgroups: 4 toward Sequelae of Cerebrovascular Diseases, Includes Cerebral Atherosclerosis and Stroke Sequelae; 2 toward Transient Ischemic Attacks and Vascular Syndromes in Cerebrovascular Diseases; 1 toward Alzheimer’s disease and related dementias; 10 are assigned none. Every code can lead a claim. CMS attaches a code-first note to 1 of the 17.
- Sequelae of Cerebrovascular Diseases, Includes Cerebral Atherosclerosis and Stroke Sequelae: can award the low comorbidity tier as a secondary diagnosis.
- Transient Ischemic Attacks and Vascular Syndromes in Cerebrovascular Diseases
- Alzheimer’s disease and related dementias: counts toward the high comorbidity tier only in an interaction pair.
Code first
CMS grouper convention 75, on I67.841. Code first:
- underlying condition, if applicable, such as eclampsia (O15.00-O15.9)
Every code in I67
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| I67.0 | Dissection of cerebral arteries, nonruptured | Can lead a claim | B | None |
| I67.1 | Cerebral aneurysm, nonruptured | Can lead a claim | B | None |
| I67.2 | Cerebral atherosclerosis | Can lead a claim | B | Sequelae of Cerebrovascular Diseases, Includes Cerebral Atherosclerosis and Stroke Sequelae |
| I67.3 | Progressive vascular leukoencephalopathy | Can lead a claim | B | None |
| I67.4 | Hypertensive encephalopathy | Can lead a claim | B | None |
| I67.5 | Moyamoya disease | Can lead a claim | B | None |
| I67.6 | Nonpyogenic thrombosis of intracranial venous system | Can lead a claim | B | None |
| I67.7 | Cerebral arteritis, not elsewhere classified | Can lead a claim | B | None |
| I67.8 Other specified cerebrovascular diseases | ||||
| I67.81 | Acute cerebrovascular insufficiency | Can lead a claim | B | Sequelae of Cerebrovascular Diseases, Includes Cerebral Atherosclerosis and Stroke Sequelae |
| I67.82 | Cerebral ischemia | Can lead a claim | B | Sequelae of Cerebrovascular Diseases, Includes Cerebral Atherosclerosis and Stroke Sequelae |
| I67.83 | Posterior reversible encephalopathy syndrome | Can lead a claim | B | Alzheimer’s disease and related dementias |
| I67.84 Cerebral vasospasm and vasoconstriction | ||||
| I67.841 | Reversible cerebrovascular vasoconstriction syndrome | Can lead a claim, code first applies | B | Transient Ischemic Attacks and Vascular Syndromes in Cerebrovascular Diseases |
| I67.848 | Other cerebrovascular vasospasm and vasoconstriction | Can lead a claim | B | Transient Ischemic Attacks and Vascular Syndromes in Cerebrovascular Diseases |
| I67.85 Hereditary cerebrovascular diseases | ||||
| I67.850 | Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathyCMS: Cereb autosom dom artopath w subcort infarcts & leukoenceph | Can lead a claim | B | None |
| I67.858 | Other hereditary cerebrovascular disease | Can lead a claim | B | None |
| I67.89 | Other cerebrovascular disease | Can lead a claim | B | Sequelae of Cerebrovascular Diseases, Includes Cerebral Atherosclerosis and Stroke Sequelae |
| I67.9 | Cerebrovascular disease, unspecified | Can lead a claim | H | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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