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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

What this means — in plain language

MedlinePlus · NIH

Angina is chest pain or discomfort you feel when there is not enough blood flow to your heart muscle. Your heart muscle needs the oxygen that the blood carries. Angina may feel like pressure or a squeezing pain in your chest. It may feel like indigestion. You may also feel pain in your shoulders, arms, neck, jaw, or back. Angina is a symptom of coronary artery disease (CAD), the most common heart disease . CAD…

Read more about Angina at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

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)

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH
Angina

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

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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