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Q24.5

Q24.5: Malformation of coronary vessels

Billable / specific codeICD-10-CMPOA exempt

Q24.5 is a billable, specific ICD-10-CM code for malformation of coronary vessels. It is valid for submission on a claim.

Check Q24.5 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Congenital coronary (artery) aneurysm

Excludes1 inherited from the categories above Q24.5

A category’s note binds every code beneath it.

Written on Q24: Other congenital malformations of heart

  • endocardial fibroelastosis (I42.4)

Other codes that can never be billed with Q24.5

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • I25.41Coronary artery aneurysm
  • Q28Other congenital malformations of circulatory system

Risk adjustment

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

Medicare coverage

Q24.5 is named in 21 Medicare coverage policies: 21 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)
  • A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
  • A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)

Alphabetic index entries that lead here

  • Bridge, myocardial
  • Abnormal, abnormality, abnormalities›coronary artery
  • Accessory›coronary artery
  • Anomaly, anomalous›coronary artery or vein
  • Anomaly, anomalous›distribution, coronary artery
  • Distortion›coronary
  • Distribution vessel, atypical›coronary artery
  • Malformation›coronary vessels
  • Single›coronary artery
  • Aberrant›artery›coronary
  • Absence›artery›coronary
  • Accessory›blood vessels NEC›coronary

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Q24

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.