ICD-10-CM 2027
ICD-10 code for coronary artery sclerosis
Atherosclerotic heart disease of native coronary artery without angina pectoris
From the official ICD-10-CM alphabetic index entry “Sclerosis, sclerotic › coronary (artery)”. Page updated September 29, 2026.
About coding coronary artery sclerosis
The ICD-10-CM code for coronary artery sclerosis is I25.10 (Atherosclerotic heart disease of native coronary artery without angina pectoris).
Within I25.1, choose I25.10 (without angina pectoris) only when documentation doesn't support a more specific option: with angina pectoris (I25.11).
Use an additional code to identify: chronic total occlusion of coronary artery (I25.82), exposure to environmental tobacco smoke (Z77.22), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31), tobacco dependence (F17.-) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific coronary artery sclerosis codes (official index)
- with angina pectoris
Common questions about coronary artery sclerosis ICD-10 codes
What is the ICD-10 code for coronary artery sclerosis?
- I25.10 — Atherosclerotic heart disease of native coronary artery without angina pectoris.
Is I25.10 billable?
- Yes. I25.10 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I25.10 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I25.10 as a principal diagnosis.
Is I25.10 a CC or MCC?
- No. I25.10 is neither a CC nor an MCC under MS-DRG v44.0.