I20 Angina pectoris

Non-billable header with 5 child codes.

Excludes1 (never code together)

• 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)

Applies from I20 Angina pectoris

Excludes1 (never code together)

• 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)

Codes under I20

• I20.0 Unstable angina
• I20.1 Angina pectoris with documented spasm
• I20.2 Refractory angina pectoris
• I20.8 Other forms of angina pectoris
• I20.9 Angina pectoris, unspecified

Code annotations containing back-references to I20

Back-references to I20

• Type 1 Excludes: I24 Other acute ischemic heart diseases ("angina pectoris (I20.-)")

Back-references to I20

• Type 1 Excludes: I24 Other acute ischemic heart diseases ("angina pectoris (I20.-)")

Nearby codes

• I20 Angina pectoris (this code)
• I20.0 Unstable angina
• I20.1 Angina pectoris with documented spasm
• I20.2 Refractory angina pectoris
• I20.8 Other forms of angina pectoris
• I20.81 Angina pectoris with coronary microvascular dysfunction