I22.0 – Subsequent ST elevation (STEMI) myocardial infarction of anterior wall

ICD-10-CM 2027 diagnosis code · Ischemic heart diseases

Billable code

ICD-10-CM code I22.0

Code: I22.0 (claims format: I220)
Description: Subsequent ST elevation (STEMI) myocardial infarction of anterior wall
Short description: Subsequent STEMI of anterior wall
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I20-I25 Ischemic heart diseases
Parent codes: I22

Notes for I22.0

Applicable to:

Subsequent acute transmural myocardial infarction of anterior wall
Subsequent transmural (Q wave) infarction (acute)(of) anterior (wall) NOS
Subsequent anteroapical transmural (Q wave) infarction (acute)
Subsequent anterolateral transmural (Q wave) infarction (acute)
Subsequent anteroseptal transmural (Q wave) infarction (acute)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I22 – Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction

Includes:

acute myocardial infarction occurring within four weeks (28 days) of a previous acute myocardial infarction, regardless of site
cardiac infarction
coronary (artery) embolism
coronary (artery) occlusion
coronary (artery) rupture
coronary (artery) thrombosis
infarction of heart, myocardium, or ventricle
recurrent myocardial infarction
reinfarction of myocardium
rupture of heart, myocardium, or ventricle
subsequent type 1 myocardial infarction

Excludes1 (not coded here):

subsequent myocardial infarction, type 2 (I21.A1)
subsequent myocardial infarction of other type (type 3) (type 4) (type 5) (I21.A9)

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)

Block I20-I25

Code also:

the presence of hypertension (I10-I1A)

Index terms for I22.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in I22

Frequently asked questions

What is ICD-10 code I22.0?

I22.0 is the ICD-10-CM code for subsequent ST elevation (STEMI) myocardial infarction of anterior wall, in the block I20-I25 (Ischemic heart diseases).

Is I22.0 a billable code?

Yes. I22.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I22.0 belong to?

It belongs to category I22 – Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.