I22Header code — not billable

Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction

Short description: Subsequent STEMI & NSTEMI mocard infrc

Chapter
9. Diseases of the circulatory system
Category
I22
Effective date
October 1, 2026

Related codes in category I22

I22.0Subsequent STEMI of anterior wallYesI22.1Subsequent STEMI of inferior wallYesI22.2Subsequent non-ST elevation (NSTEMI) myocardial infarctionYesI22.8Subsequent STEMI of sitesYesI22.9Subsequent STEMI of unsp siteYes

Frequently asked questions

What is ICD-10 code I22?

I22 is an ICD-10-CM diagnosis code for Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction.

Is I22 a billable code?

No. I22 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is I22 in?

I22 falls under Chapter 9: Diseases of the circulatory system.

When did I22 become effective?

I22 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to I22?

I22 belongs to category I22, which includes 5 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.