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I25.42

I25.42: Coronary artery dissection

Billable / specific codeICD-10-CM

I25.42 is a billable, specific ICD-10-CM code for coronary artery dissection. It is valid for submission on a claim.

Check I25.42 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above I25.42

Not part of this code, but both may be coded when both are present.

Written on I25: Chronic ischemic heart disease

  • non-ischemic myocardial injury (I5A)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I25.42 is named in 18 Medicare coverage policies: 18 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A52868Billing and Coding: Transesophageal Echocardiography (TEE)
  • A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)
  • A56494Billing and Coding: Cardiovascular Nuclear Medicine

Alphabetic index entries that lead here

  • Dissection›artery›coronary

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under I25.4

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.