I20.1
BillableAngina pectoris with documented spasm
Angina pectoris with documented spasm
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Angiospastic angina
- Prinzmetal angina
- Spasm-induced angina
- Variant angina
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(69)
SNOMED CT
- Arterial spasm3750006
- Arteriospasm3750006
- Spasm of artery3750006
- Angina pectoris with documented spasm23687008
- Coronary artery spasm23687008
- Coronary spasm23687008
- Angiospasm71772004
- Blood vessel spasm71772004
- Vascular spasm71772004
- Vasospasm71772004
- Coronary artery spasm angina87343002
- Prinzmetal angina87343002
- Prinzmetal's angina87343002
- Variant angina87343002
- Variant angina pectoris87343002
- Cardiac arrhythmia due to coronary artery spasm1204124006
UMLS
- Angina Pectoris, VariantC0002963
- Angina, PrinzmetalC0002963
- Angina, Prinzmetal'sC0002963
- Coronary artery spasm anginaC0002963
- Prinzmetal AnginaC0002963
- Prinzmetal anginaC0002963
- Prinzmetal angina (disorder)C0002963
- Prinzmetal's AnginaC0002963
- Prinzmetal's anginaC0002963
- Prinzmetals AnginaC0002963
- Variant AnginaC0002963
- Variant Angina PectorisC0002963
- Variant anginaC0002963
- Variant angina pectorisC0002963
- Vasospastic anginaC0002963
- angina prinzmetalC0002963
- angina variantC0002963
- prinzmetal anginaC0002963
- prinzmetal variant anginaC0002963
- prinzmetal's anginaC0002963
- prinzmetals anginaC0002963
- variant anginaC0002963
- variant angina pectorisC0002963
- vasospastic anginaC0002963
- Angina pectoris with documented spasmC0235470
- Spasm-induced anginaC0235470
- Angiospastic anginaC1387794
Clinical Terms
- Prinzmetal angina (disorder)
- prinzmetal angina
- variant angina pectoris
- Spasm-induced angina
- Vascular spasm
- Variant Angina
- Angina, Prinzmetal
- Angiospasm
- Prinzmetal's Angina
- Coronary artery spasm angina
- Coronary artery spasm
- prinzmetals angina
- Vasospastic angina
- prinzmetal variant angina
- Cardiac arrhythmia due to coronary artery spasm
- Arteriospasm
- Blood vessel spasm
- Angina Pectoris, Variant
- angina variant
- angina prinzmetal
- Coronary spasm
- Spasm of artery
- Vasospasm
- Angiospastic angina
- Arterial spasm
- Angina, Prinzmetal's
Frequently Asked Questions
What is the ICD-10 code for angina pectoris with documented spasm?
The ICD-10-CM code for angina pectoris with documented spasm is I20.1. The full clinical description is "Angina pectoris with documented spasm". I20.1 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I20.1 mean?
ICD-10-CM code I20.1 represents “Angina pectoris with documented spasm”. 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 I20.1 a billable code?
Yes, I20.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I20.1 in?
I20.1 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I20.1?
I20.1 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 I20.1?
Yes, when using I20.1, 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 I20.1 map to?
I20.1 maps to 5 SNOMED CT concepts: 23687008, 71772004, 3750006, 1204124006, 87343002. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I20.1?
I20.1 is linked to 3 UMLS Concept Unique Identifiers: C0002963, C0235470, C1387794. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I20.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like angina pectoris with documented spasm 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 I20.1?
I20.1 maps to the ICD-11 code: BA85.Z (Coronary vasospastic disease, 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.