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I20

Non-billable

Angina pectoris

I20 is the ICD-10-CM code for Angina pectoris. It is a non-billable category code — use a more specific child code such as I20.0 for billing.

Status
Header (non-billable)
Chapter
I00-I99
Subcodes
5
Edition
FY2026

I00-I99 Diseases of the circulatory system

Excludes1 — not coded here

  • •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)

Frequently asked questions

What is ICD-10 code I20?
I20 is the ICD-10-CM code for "Angina pectoris". It falls under I00-I99 Diseases of the circulatory system.
Is I20 a billable code?
No — I20 is a non-billable header code. Use a more specific child code (such as I20.0) for billing.
What are the subcodes of I20?
I20 has 5 more specific child codes, including I20.0, I20.1, I20.2.
What is excluded from I20?
Excludes1 (not coded here): 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).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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