2025 ICD-10-CM Diagnosis Code I25.85

Chronic coronary microvascular dysfunction

• I25.85 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2025 edition of ICD-10-CM I25.85 became effective on October 1, 2024.
• This is the American ICD-10-CM version of I25.85 – other international versions of ICD-10 I25.85 may differ.

Applicable To

• Chronic (presentation of) coronary microvascular disease
• Coronary microvascular dysfunction NOS

The following code(s) above I25.85 contain annotation back-references

 that may be applicable to I25.85:

• I00-I99  Diseases of the circulatory system
• I20-I25  Ischemic heart diseases
• I25  Chronic ischemic heart disease

ICD-10-CM I25.85 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

• 302 Atherosclerosis with mcc
• 303 Atherosclerosis without mcc

Code History

• 2024 (effective 10/1/2023): New code
• 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I25.85:

• Disease, diseased – see also Syndrome
  • coronary (artery) – see Disease, heart, ischemic, atherosclerotic
    • microvascular
      • chronic I25.85
• Dysfunction
  • chronic
    • coronary microvascular I25.85
  • coronary microvascular I25.85
    • chronic I25.85