I21.A1

Billable

Myocardial infarction type 2

I21.A1 is the ICD-10-CM code for Myocardial infarction type 2. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
I00-I99
Parent
I21.A
Edition
FY2026

I00-I99 Diseases of the circulatory system

Includes

  • Myocardial infarction due to demand ischemia
  • Myocardial infarction secondary to ischemic imbalance

Code first

  • , if applicable, the underlying cause, such as:
  • anemia (D50.0-D64.9)
  • chronic obstructive pulmonary disease (J44.-)
  • paroxysmal tachycardia (I47.0-I47.9)
  • shock (R57.0-R57.9)

Frequently asked questions

What is ICD-10 code I21.A1?
I21.A1 is the ICD-10-CM code for "Myocardial infarction type 2". It falls under I00-I99 Diseases of the circulatory system.
Is I21.A1 a billable code?
Yes — I21.A1 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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