Q24.5 — Malformation of coronary vessels
Q24.5 is a billable, specific ICD-10-CM code for malformation of coronary vessels. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Congenital coronary (artery) aneurysm
Other codes that can never be billed with Q24.5
These codes carry an Excludes1 note pointing at Q24.5. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q24.5 alone.
Risk adjustment
Q24.5 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
Q24.5 is named in 31 Medicare coverage policies — 31 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A52868Billing and Coding: Transesophageal Echocardiography (TEE)
How Q24.5 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Q24.5.
- 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
Related codes at this level
Codes that share Q24. If Q24.5 is not quite right, the correct code is usually one of these.
Questions about Q24.5
- Is Q24.5 a billable ICD-10-CM code?
- Yes. Q24.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Q24.5 sit in the tabular list?
- Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of the circulatory system (Q20-Q28).