I67.0 ICD-10-CM Code: Dissection of cerebral arteries, nonruptured

Code

I67.0

Description

Dissection of cerebral arteries, nonruptured

HCC (V28)

No CMS-HCC V28 mapping

RAF reference coefficient

—

Billable

Yes

Payment year

2026

HCC Category Mapping

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work I67.0 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT review for I67.0

What This Code Means

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for I67.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

• •The 'nonruptured' specification is critical; if rupture occurs, use a different code
• •Document the location and extent of dissection when available

Clinical Significance

Cerebral artery dissection is a tear in the inner lining of a cerebral artery, which can lead to stroke or transient ischemic attack. This condition particularly affects younger patients and may result from trauma, connective tissue disorders, or occur spontaneously. Accurate coding is important for risk adjustment as it captures a significant vascular condition requiring anticoagulation or antiplatelet therapy and close monitoring.

Documentation Requirements

• ✓Explicit documentation of cerebral artery dissection by the provider
• ✓Specification that the dissection is nonruptured (if ruptured, different coding applies)
• ✓Identification of the affected artery when documented (carotid vs. vertebral dissection may have separate codes)
• ✓Imaging confirmation (CT angiography, MR angiography, or conventional angiography)
• ✓Documentation of whether the dissection is traumatic or spontaneous in origin
• ✓Current treatment plan (anticoagulation, antiplatelet therapy, or surgical/endovascular intervention)

Commonly Confused Codes

• •I72.0: Aneurysm of carotid artery; dissection and aneurysm are different pathologies
• •I77.71: Dissection of carotid artery (extracranial); for dissection outside the skull, not intracranial
• •I77.79: Dissection of other specified artery; for non-cerebral artery dissections
• •I63.0x: Cerebral infarction due to thrombosis of precerebral arteries; code the stroke separately if it results from the dissection

Child Codes