I22 ICD-10-CM Code: Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
I22Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where I22 sits
- 1
Chapter 9
Diseases of the circulatory system (I00-I99)
- 2
Section
Ischemic heart diseases (I20-I25)
- 3
Category I22
Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
- 4
Code I22
Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction
More specific choices
Codes under I22
I22 is a non-billable category. Choose the child code that best matches the documented diagnosis.
I22.0Subsequent ST elevation (STEMI) myocardial infarction of anterior wall
I22.1Subsequent ST elevation (STEMI) myocardial infarction of inferior wall
I22.2Subsequent non-ST elevation (NSTEMI) myocardial infarction
I22.8Subsequent ST elevation (STEMI) myocardial infarction of other sites
I22.9Subsequent ST elevation (STEMI) myocardial infarction of unspecified site
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for I22.
Code first
No “code first” instruction is listed for I22.
Use additional code
- code, if applicable, to identify:
- exposure to environmental tobacco smoke (Z77.22)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Excludes1
Conditions that should not be reported together with this code.
- subsequent myocardial infarction, type 2 (I21.A1)
- subsequent myocardial infarction of other type (type 3) (type 4) (type 5) (I21.A9)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for I22.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code I22 mean?
I22 is the FY 2027 U.S. ICD-10-CM code for “Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction.”
Is I22 a billable or specific ICD-10-CM code?
No. I22 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is I22 located in ICD-10-CM?
I22 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Ischemic heart diseases (I20-I25) (I20–I25), under category I22, Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction.
What coding notes are listed for I22?
No inclusion terms are listed for I22 in this reference record. No code-first instruction is listed. Additional-code instructions: code, if applicable, to identify:; exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891); occupational exposure to environmental tobacco smoke (Z57.31); status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82); tobacco dependence (F17.-); tobacco use (Z72.0). Excludes1 notes: subsequent myocardial infarction, type 2 (I21.A1); subsequent myocardial infarction of other type (type 3) (type 4) (type 5) (I21.A9). No Excludes2 note is listed.
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