ICD-10-CM code · FY2027
I21.02 ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery
BillableValid for claims as a specific diagnosis code
About I21.02
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Coding notes for I21.02
Applicable to Other names for conditions reported with this code.
- ST elevation (STEMI) myocardial infarction involving diagonal coronary artery
Also applies, from I21 Acute myocardial infarction
Includes Conditions this code covers.
- cardiac infarction
- coronary (artery) embolism
- coronary (artery) occlusion
- coronary (artery) rupture
- coronary (artery) thrombosis
- infarction of heart, myocardium, or ventricle
- myocardial infarction specified as acute or with a stated duration of 4 weeks (28 days) or less from onset
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
Use additional code Add a second code for the detail named here.
- 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 notes (apply to every code in it)
Chapter 9 notes (apply to every code in it)
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Related codes in I21.0
Latest research on myocardial infarction
- Multidomain rehabilitation after myocardial infarction improves outcomes in older adults
- Living in a marginalized neighbourhood is associated with worse outcomes in patients with myocardial infarction
- Spironolactone ineffective for patients with preserved ejection fraction after myocardial infarction
- Beta-blocker interruption not noninferior to continuation following myocardial infarction
- Plasma progranulin levels are correlated with left ventricular function recovery following myocardial infarction
Landmark trials from 2MM Classics
- Transjugular intrahepatic portosystemic shunt effective in preventing recurrent variceal hemorrhage [Classics Series]
- Gadolinium-containing contrast associated with nephrogenic fibrosing dermopathy and systemic fibrosis [Classics Series]
- Rivaroxaban noninferior to warfarin in patients with atrial fibrillation and bioprosthetic mitral valves [Classics Series]
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See 2MM+ plansICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.
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