I22

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

Non-billable headerICD-10-CM

I22 is a non-billable header ICD-10-CM code for subsequent st elevation (stemi) and non-st elevation (nstemi) myocardial infarction. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Use additional code

Add a secondary code to capture the detail described below.

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)

Includes

Conditions this code covers.

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

Other codes that can never be billed with I22

Their own Excludes1 notes name this code, so the conflict is not listed above.

I25.82Chronic total occlusion of coronary artery

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead I22

5 child codes. Green means billable.