I20
Non-billableAngina pectoris
Angina pectoris
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •systemic connective tissue disordersM30-M36
- •transient cerebral ischemic attacks and related syndromesG45
Use Additional Code
Additional codes that should follow this code
Code Also
A second code may be required; sequencing depends on circumstances
Child Codes (5)
Related Conditions
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(32)
UMLS
- AP - Angina pectorisC0002962
- AnginaC0002962
- Angina (disorder)C0002962
- Angina NOSC0002962
- Angina PectorisC0002962
- Angina pectorisC0002962
- Angina pectoris, unspecifiedC0002962
- Angina syndromeC0002962
- Anginal discomfortC0002962
- Anginal painC0002962
- Anginal syndromeC0002962
- Angor PectorisC0002962
- Cardiac anginaC0002962
- Ischaemic chest painC0002962
- Ischaemic heart disease - anginaC0002962
- Ischemic chest painC0002962
- Ischemic chest pain (finding)C0002962
- Ischemic heart disease - anginaC0002962
- StenocardiaC0002962
- StenocardiasC0002962
- anginaC0002962
- angina painC0002962
- angina pectorisC0002962
- anginal painC0002962
- anginal syndromeC0002962
- anginasC0002962
- angor pectorisC0002962
- cardiac anginaC0002962
- ischemic chest painC0002962
- pain anginaC0002962
- pectoris anginaC0002962
- stenocardiaC0002962
Frequently Asked Questions
What is the ICD-10 code for angina pectoris?
The ICD-10-CM code for angina pectoris is I20. The full clinical description is "Angina pectoris". I20 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code I20 mean?
ICD-10-CM code I20 represents “Angina pectoris”. It is classified under Chapter 9: Diseases of the Circulatory System and is a non-billable header code. Use a more specific child code for billing purposes.
Is I20 a billable code?
No, I20 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 5 child codes under I20.
What chapter is I20 in?
I20 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I20?
I20 has Excludes1 notes indicating codes that cannot be used together with it, including: 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).
What are the subcategories under I20?
I20 has 5 child codes, including: I20.0 (Unstable angina), I20.1 (Angina pectoris with documented spasm), I20.2 (Refractory angina pectoris), I20.8 (Other forms of angina pectoris), and 1 more.
Are additional codes required with I20?
Yes, when using I20, also report: ; 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).
What are the UMLS CUIs for I20?
I20 is linked to 1 UMLS Concept Unique Identifier: C0002962. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I20 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like angina pectoris affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of I20?
I20 maps to the ICD-11 code: BA40.Z (Angina pectoris, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.