All ICD10 Codes

I21.A

Non-Billable
ChapterI00–I99
Ranksubcategory
Official Description

Other type of myocardial infarction

Use a more specific code (2 billable)
I21.A1Myocardial infarction type 2I21.A9Other myocardial infarction type
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).
General instructions are available for the parent sections:
View CH9 NotesView I20-I25 NotesView I21 Notes

Clinical Hierarchy

BillableHas subcodes
CH9Diseases of the circulatory system (I00-I99)
I20-I25Ischemic heart diseases (I20-I25)
I21Acute myocardial infarction
I21.AOther type of myocardial infarctionNot billable
I21.A1Myocardial infarction type 2Billable
I21.A9Other myocardial infarction typeBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I21.A:

categoryI21
Acute myocardial infarction
View context instructions
blockI20-I25
Ischemic heart diseases (I20-I25)
View context instructions
chapterCH9
Diseases of the circulatory system (I00-I99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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