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ICD-10-CM 2027

ICD-10 code for CAD (coronary artery disease)

I25.10

Atherosclerotic heart disease of native coronary artery without angina pectoris

✓ Billable / specificAdult · age 15–124

Confirmed by the official ICD-10-CM index entry “arteriosclerosis, arteriosclerotic (diffuse) (obliterans) (of) (senile) (with calcification) › coronary (artery)”. Page updated September 29, 2026.

About coding CAD

The ICD-10-CM code for CAD (coronary artery disease) is I25.10 (Atherosclerotic heart disease of native coronary artery without angina pectoris). The official index lists 5 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I25.10.

It is also searched as coronary heart disease, ASHD.

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.

Related CAD codes

  • I25.110 Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
  • I25.111 Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
  • I25.112 Atherosclerotic heart disease of native coronary artery with refractory angina pectoris
  • I25.118 Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
  • I25.119 Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris

Common questions about CAD ICD-10 codes

What is the ICD-10 code for CAD?

I25.10 — Atherosclerotic heart disease of native coronary artery without angina pectoris. More specific codes apply when the documentation supports them: I25.110, I25.111, I25.112, I25.118 and others below.

What is the ICD-10 code for atherosclerotic heart disease of native coronary artery with unstable angina pectoris?

I25.110 — Atherosclerotic heart disease of native coronary artery with unstable angina pectoris.

What is the ICD-10 code for atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm?

I25.111 — Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm.

What is the ICD-10 code for atherosclerotic heart disease of native coronary artery with refractory angina pectoris?

I25.112 — Atherosclerotic heart disease of native coronary artery with refractory angina pectoris.

What is the ICD-10 code for atherosclerotic heart disease of native coronary artery with other forms of angina pectoris?

I25.118 — Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris.

What is the ICD-10 code for atherosclerotic heart disease of native coronary artery with unspecified angina pectoris?

I25.119 — Atherosclerotic heart disease of native coronary artery with unspecified 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.