I20

I20: Angina pectoris

Non-billable headerICD-10-CM

I20 is a non-billable header ICD-10-CM code for angina pectoris. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Add a secondary code to capture the detail described below.

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)

Other codes that can never be billed with I20

Their own Excludes1 notes name this code, so the conflict is not listed above.

I24Other acute ischemic heart diseases
I25.110Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
I25.111Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
I25.118Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
I25.119Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris
I25.700Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris
I25.701Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm
I25.708Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead I20

5 child codes. Green means billable.