I20 Non-Billable Code
Angina pectoris
Chapter Classification
Chapter 9
Diseases of the circulatory system (I00-I99)
Section Detail
I20-I25
Ischemic heart diseases (I20-I25)
Coding Guidelines & Notes
excludes1
- 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)
useAdditionalCode
- 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)
More Specific Diagnosis Codes
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