ICD-10 I67.850
Billable / Specific CCCerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
About ICD-10-CM I67.850
ICD-10-CM code I67.850 represents Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy. This is a billable/specific code in the Circulatory System chapter (block I67). The 2026 edition of ICD-10-CM I67.850 became effective on October 1, 2025.
Coding Tips for I67.850
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
I67.850 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I67.850. Per CMS ICD-10-CM Tabular 2026.
- CADASIL
Coding Notes
Code Also
- any associated diagnoses, such as:
- epilepsy (G40.-)
- stroke (I63.-)
- vascular dementia (F01.-)
Inpatient DRG Impact, CC
codes Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for I67.850
Local Coverage Determinations (LCDs) from CMS MACs that list I67.850 as a covered diagnosis.
Showing top 10 of 543 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I67.850.
5 Medicare
Codes Adjacent To I67.850
Other codes in section I60-I69 (Cerebrovascular diseases).
ICD-10 I67.850, Billing FAQ
Is ICD-10 code I67.850 billable? +
Yes, I67.850 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to I67.850? +
ICD-10 I67.850 includes: CADASIL.
Is I67.850 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with I67.850? +
Procedures frequently paired with I67.850 include: 61650, 61651.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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