ICD-10-CM · I21.9
ICD-10 I21.9: Acute myocardial infarction, unspecified
Acute MI without ST-elevation/non-ST specification.
Code
I21.9
Category
Diseases of the circulatory system (I00-I99)
Clinical context
Acute MI without ST-elevation/non-ST specification.
Documentation requirements
- Troponin elevation
- ECG findings
- Time of symptom onset
Common related procedures
- 93000 ECG
- Cardiac biomarkers
- 92920-92928 PCI
Common payer denial patterns
- Use I21.0-I21.4 for STEMI specifics
Frequently asked questions
What does ICD-10 I21.9 mean?
Acute myocardial infarction, unspecified
When is this code documented?
Acute MI without ST-elevation/non-ST specification.
What documentation supports this code?
Troponin elevation; ECG findings; Time of symptom onset.
What are common denials associated with this diagnosis?
Use I21.0-I21.4 for STEMI specifics.
Related diagnoses
Sources
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