I20.81
BillableAngina pectoris with coronary microvascular dysfunction
Angina pectoris with coronary microvascular dysfunction
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Angina pectoris with coronary microvascular disease
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 to identify:
- •exposure to environmental tobacco smokeZ77.22
- •history of tobacco dependenceZ87.891
- •occupational exposure to environmental tobacco smokeZ57.31
- •tobacco dependenceF17
- •tobacco useZ72.0
- code(s) for symptoms associated with angina equivalent
Code Also
A second code may be required; sequencing depends on circumstances
Related Codes(1)
Related Conditions
Also Known As / Clinical Terms(27)
SNOMED CT
- Cardiac syndrome X233845001
- Chest pain with normal coronary angiography233845001
- Coronary microvascular disease233845001
- Coronary small artery disease233845001
- Endothelial dysfunction233845001
- Microvascular angina233845001
- Coronary microvascular dysfunction697976003
- Microvascular ischaemia of myocardium697976003
- Microvascular ischemia of myocardium697976003
- Angina pectoris due to coronary microvascular dysfunction180541341000119102
- Angina pectoris due to microvascular ischaemia of myocardium180541341000119102
- Angina pectoris due to microvascular ischemia of myocardium180541341000119102
UMLS
Clinical Terms
- Coronary microvascular dysfunction
- Angina pectoris with coronary microvascular disease
- Microvascular ischaemia of myocardium
- Chest pain with normal coronary angiography
- Microvascular ischemia of myocardium
- Angina pectoris due to microvascular ischemia of myocardium
- Endothelial dysfunction
- Coronary small artery disease
- Angina pectoris due to microvascular ischaemia of myocardium
- Cardiac syndrome X
- Angina pectoris due to coronary microvascular dysfunction
- Coronary microvascular disease
- Microvascular angina
Frequently Asked Questions
What is the ICD-10 code for angina pectoris with coronary microvascular dysfunction?
The ICD-10-CM code for angina pectoris with coronary microvascular dysfunction is I20.81. The full clinical description is "Angina pectoris with coronary microvascular dysfunction". I20.81 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I20.81 mean?
ICD-10-CM code I20.81 represents “Angina pectoris with coronary microvascular dysfunction”. 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 I20.81 a billable code?
Yes, I20.81 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I20.81 in?
I20.81 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I20.81?
I20.81 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 I20.81?
Yes, when using I20.81, 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); code(s) for symptoms associated with angina equivalent.
What SNOMED CT codes does I20.81 map to?
I20.81 maps to 3 SNOMED CT concepts: 180541341000119102, 233845001, 697976003. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I20.81?
I20.81 is linked to 2 UMLS Concept Unique Identifiers: C5819576, C5819181. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I20.81 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like angina pectoris with coronary microvascular dysfunction 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 I20.81?
There is no direct ICD-11 mapping available for I20.81 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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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.