I21.A9 Other myocardial infarction type

Instructional Notes:

I21.A9
Description: Other myocardial infarction type
Code First:
- , if applicable, postprocedural myocardial infarction following cardiac surgery (I97.190), or postprocedural myocardial infarction during cardiac surgery (I97.790)
Inclusion Term:
- Myocardial infarction associated with revascularization procedure
- Myocardial infarction type 3
- Myocardial infarction type 4a
- Myocardial infarction type 4b
- Myocardial infarction type 4c
- Myocardial infarction type 5
Code Also: ['complication, if known and applicable, such as:', '(acute) stent occlusion (T82.897-)', '(acute) stent stenosis (T82.855-)', '(acute) stent thrombosis (T82.867-)', 'cardiac arrest due to underlying cardiac condition (I46.2)', 'complication of percutaneous coronary intervention (PCI) (I97.89)', 'occlusion of coronary artery bypass graft (T82.218-)']
↓
I21.A
Description: Other type of myocardial infarction
↓
I21
Description: Acute myocardial infarction
Exclude2:
- old myocardial infarction (I25.2)
- postmyocardial infarction syndrome (I24.1)
- subsequent type 1 myocardial infarction (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)
Include:
- 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
↓
I20-I25
Description: Ischemic heart diseases (I20-I25)
Code Also: ['the presence of hypertension (I10-I1A)']
↓
I00-I99
Description: Diseases of the circulatory system
Exclude2:
- 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.-)