ICD-10-CM 2027
ICD-10 code for Equivalent angina
From the official ICD-10-CM alphabetic index entry “Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor) › equivalent”. Page updated September 29, 2026.
About coding Equivalent angina
The ICD-10-CM code for Equivalent angina is I20.89 (Other forms of angina pectoris).
Within I20.8, choose I20.89 (Other forms of angina pectoris) only when documentation doesn't support a more specific option: angina pectoris with coronary microvascular dysfunction (I20.81).
Use an additional 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.-) and tobacco use (Z72.0).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about Equivalent angina ICD-10 codes
What is the ICD-10 code for Equivalent angina?
- I20.89 — Other forms of angina pectoris.
Is I20.89 billable?
- Yes. I20.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I20.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I20.89 as a principal diagnosis.
Is I20.89 a CC or MCC?
- No. I20.89 is neither a CC nor an MCC under MS-DRG v44.0.