I20Angina pectoris
ICD-10-CM category (non-billable header) code — part of Ischemic heart diseases (I20-I25)
Coding Notes
Excludes1 (never code both 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)
Subcategories (5)
- I20.0 Unstable angina
- I20.1 Angina pectoris with documented spasm
- I20.2 Refractory angina pectoris
- I20.8 Other forms of angina pectoris
- I20.9 Angina pectoris, unspecified