Complete ICD-10-CM coding and documentation guide for icd-10 coding for non-st elevation myocardial infarction includes clinical validation requirements, medical necessity guidelines, and coding policies.
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Essential facts and insights about ICD-10 Coding for Non-ST Elevation Myocardial Infarction
Use ICD-10 code I21.4 for non-st elevation (nstemi) myocardial infarction, ensuring proper documentation in clinical notes.
Additional codes that may be used with this diagnosis
Old myocardial infarction
Use for historical MI documentation.
The ICD-10 code for non-ST elevation myocardial infarction (NSTEMI) is I21.4, used when NSTEMI is explicitly documented with elevated troponin and no ST elevation on ECG.
For a subsequent NSTEMI occurring within 28 days of a previous MI, use code I22.2, sequenced after the initial MI code.