I20.9
BillableAngina pectoris, unspecified
Angina pectoris, unspecified
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Angina NOS
- Anginal syndrome
- Cardiac angina
- Ischemic chest pain
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
Related Codes(4)
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(107)
SNOMED CT
- Status anginosus19057007
- Angina, class IV89323001
- Angina control170593007
- Angina control - poor170595000
- Angina control - improving170596004
- AP - Angina pectoris194828000
- Angina194828000
- Angina pectoris194828000
- Anginal syndrome194828000
- Cardiac angina194828000
- Ischaemic heart disease - angina194828000
- Ischemic heart disease - angina194828000
- Stenocardia194828000
- Ischaemic chest pain225566008
- Ischemic chest pain225566008
- New onset angina233821000
- Recurrent angina after percutaneous transluminal coronary angioplasty371808007
- Recurrent angina status post percutaneous transluminal coronary angioplasty371808007
- Recurrent angina after coronary stent placement371809004
- Recurrent angina following placement of coronary artery stent371809004
- Recurrent angina post coronary artery stent placement371809004
- Recurrent angina status post coronary stent placement371809004
- Recurrent angina post rotational atherectomy371811008
- Recurrent angina status post rotational atherectomy371811008
- Recurrent angina after directional coronary atherectomy371812001
- Recurrent angina status post directional coronary atherectomy371812001
- Patient post percutaneous transluminal coronary angioplasty371822007
- Post PTCA (percutaneous transluminal coronary angioplasty)371822007
- Patient post angioplasty371823002
- Typical angina429559004
- Angina associated with type 2 diabetes mellitus791000119109
- Angina due to type 2 diabetes mellitus791000119109
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
Clinical Terms
- Angina syndrome
- Recurrent angina following placement of coronary artery stent
- Patient post percutaneous transluminal coronary angioplasty
- Recurrent angina post rotational atherectomy
- Angina associated with type 2 diabetes mellitus
- Recurrent angina status post coronary stent placement
- Ischemic chest pain (finding)
- pectoris angina
- Ischemic chest pain
- Angina due to type 2 diabetes mellitus
- anginal pain
- stenocardia
- Stenocardias
- angina
- New onset angina
- Status anginosus
- Ischemic heart disease - angina
- Angina (disorder)
- anginal syndrome
- AP - Angina pectoris
- Recurrent angina status post rotational atherectomy
- pain angina
- Angina control - improving
- Recurrent angina after percutaneous transluminal coronary angioplasty
- Angor Pectoris
- anginas
- Angina, class IV
- Typical angina
- Recurrent angina after directional coronary atherectomy
- Recurrent angina status post percutaneous transluminal coronary angioplasty
- Recurrent angina post coronary artery stent placement
- Ischaemic chest pain
- Angina control
- Angina control - poor
- Patient post angioplasty
- Recurrent angina after coronary stent placement
- Angina NOS
- Recurrent angina status post directional coronary atherectomy
- cardiac angina
- Ischaemic heart disease - angina
- angina pain
- Anginal discomfort
- Post PTCA (percutaneous transluminal coronary angioplasty)
Frequently Asked Questions
What is the ICD-10 code for angina pectoris, unspecified?
The ICD-10-CM code for angina pectoris, unspecified is I20.9. The full clinical description is "Angina pectoris, unspecified". I20.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I20.9 mean?
ICD-10-CM code I20.9 represents “Angina pectoris, unspecified”. It is classified under Chapter 9: Diseases of the Circulatory System and is a billable/specific code that can be used on a claim.
Is I20.9 a billable code?
Yes, I20.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I20.9 in?
I20.9 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I20.9?
I20.9 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).
Are additional codes required with I20.9?
Yes, when using I20.9, 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 SNOMED CT codes does I20.9 map to?
I20.9 maps to 16 SNOMED CT concepts: 194828000, 791000119109, 170593007, 170596004, 170595000, and 11 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I20.9?
I20.9 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 I20.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like angina pectoris, unspecified 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 I20.9?
I20.9 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.