ICD-10-CM · Chapter 9 · I00-I99
I20 Angina pectoris
Excludes 1 (cannot be coded together)
- angina pectoris with atherosclerotic heart disease of native coronary arteries (I25.1-)
- atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris (I25.7-)
- postinfarction angina (I23.7)
Use Additional Code
- code to identify:
- exposure to environmental tobacco smoke (Z77.22)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| I20..0 | Unstable angina | Yes |
| I20..1 | Angina pectoris with documented spasm | Yes |
| I20..2 | Refractory angina pectoris | Yes |
| I20..8 | Other forms of angina pectoris | No |
| I20..81 | Angina pectoris with coronary microvascular dysfunction | Yes |
| I20..89 | Other forms of angina pectoris | Yes |
| I20..9 | Angina pectoris, unspecified | Yes |
Plain-language term for this code
The following entry in the US Medical Glossary corresponds to ICD-10-CM category I20:
- Angina Pectoris — Angina de pecho
Last reviewed: September 2026