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ICD-10-CM Current in FY 2027

I20.0

Unstable angina

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where I20.0 sits in the official hierarchy. Each level is the code it is classified under.

  1. I20 Parent Angina pectoris
  2. I20.0 This code Unstable angina

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Inclusion Terms

Accelerated angina

Inclusion Terms

Crescendo angina

Inclusion Terms

De novo effort angina

Inclusion Terms

Intermediate coronary syndrome

Inclusion Terms

Preinfarction syndrome

Inclusion Terms

Worsening effort angina

Excludes1

angina pectoris with atherosclerotic heart disease of native coronary arteries ( I25.1- )

Inherited from I20 — Angina pectoris

Excludes1

atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris ( I25.7- )

Inherited from I20 — Angina pectoris

Excludes1

postinfarction angina ( I23.7 )

Inherited from I20 — Angina pectoris

Use Additional Code

code to identify:

Inherited from I20 — Angina pectoris

Use Additional Code

exposure to environmental tobacco smoke ( Z77.22 )

Inherited from I20 — Angina pectoris

Use Additional Code

history of tobacco dependence ( Z87.891 )

Inherited from I20 — Angina pectoris

Use Additional Code

occupational exposure to environmental tobacco smoke ( Z57.31 )

Inherited from I20 — Angina pectoris

Use Additional Code

tobacco dependence ( F17 .-)

Inherited from I20 — Angina pectoris

Use Additional Code

tobacco use ( Z72.0 )

Inherited from I20 — Angina pectoris

Version History

How I20.0 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Unstable angina

  2. FY 2026 Effective

    Unchanged

    Unstable angina

Related Codes

Other codes under I20

Codes whose official notes reference I20.0

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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