2025
ICD-10-CM
Diagnosis
Code

I20 Angina pectoris

Non-billable
2016–2025

I20 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Angina pectoris.

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)

Type 1 excludes

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)

Codes

Versions

2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
Code changed
- Use additional code
  ~~code to identify:~~
  ~~exposure to environmental tobacco smoke (Z77.22)~~
  ~~history of tobacco use (Z87.891)~~
  ~~occupational exposure to environmental tobacco smoke (Z57.31)~~
  ~~tobacco dependence (F17.-)~~
  ~~tobacco use (Z72.0)~~
  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)
2016
New code