I20.0 UNSTABLE ANGINA

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Code Information

Diagnosis Code: I20.0

Short Description: Unstable angina

Long Description: Unstable angina

The code I20.0 is VALID for claim submission

Code Classification:

Diseases of the circulatory system (I00–I99)
- Ischemic heart diseases (I20-I25)
  - Angina pectoris (I20)
    - I20.0 Unstable angina

Code Version: 2022 ICD-10-CM

Synonyms

Angina control
Angina control - worsening
Chronic chest pain
Chronic ischemic heart disease
Impending infarction
Preinfarction syndrome
Progressive angina
Refractory angina

References to Index of Diseases and Injuries

The code I20.0 has the following ICD-10-CM references to the Index of Diseases and Injuries

Inclusion Terms:
- Accelerated angina
- Crescendo angina
- De novo effort angina
- Intermediate coronary syndrome
- Preinfarction syndrome
- Worsening effort angina

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
I20.0		411.1	Intermed coronary synd

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code	ICD-10 Description
I20	Angina pectoris
I20.1	Angina pectoris with documented spasm
I20.2	Refractory angina pectoris
I20.8	Other forms of angina pectoris
I20.81	Angina pectoris with coronary microvascular dysfunction
I20.89	Other forms of angina pectoris
I20.9	Angina pectoris, unspecified

This page was last updated on: 10/1/2023

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