I24.81 – Acute coronary microvascular dysfunction

ICD-10-CM 2027 diagnosis code · Ischemic heart diseases

Billable code

ICD-10-CM code I24.81

Code: I24.81 (claims format: I2481)
Description: Acute coronary microvascular dysfunction
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I20-I25 Ischemic heart diseases
Parent codes: I24 › I24.8

Notes for I24.81

Applicable to:

Acute (presentation of) coronary microvascular disease

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I24 – Other acute ischemic heart diseases

Excludes1 (not coded here):

angina pectoris (I20.-)
transient myocardial ischemia in newborn (P29.4)

Excludes2 (not included here):

non-ischemic myocardial injury (I5A)

I24.8 – Other forms of acute ischemic heart disease

Excludes1 (not coded here):

myocardial infarction due to demand ischemia (I21.A1)

Block I20-I25

Code also:

the presence of hypertension (I10-I1A)

Index terms for I24.81

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in I24.8

I24.89 – Other forms of acute ischemic heart diseaseBillable

Frequently asked questions

What is ICD-10 code I24.81?

I24.81 is the ICD-10-CM code for acute coronary microvascular dysfunction, in the block I20-I25 (Ischemic heart diseases).

Is I24.81 a billable code?

Yes. I24.81 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I24.81 belong to?

It belongs to category I24 – Other acute ischemic heart diseases.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.