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 period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Use Additional Code
Additional codes that should follow this code
Code Also
A second code may be required; sequencing depends on circumstances
- the presence of hypertension (I10-I1A)
Also Known As / Clinical Terms
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
Frequently Asked Questions
What is ICD-10 code I20.9?
ICD-10-CM code I20.9 represents "Angina pectoris, unspecified". It 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 you should also 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).
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.
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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.