ICD-10-CM code · FY2027

I25.85 Chronic coronary microvascular dysfunction

BillableValid for claims as a specific diagnosis code

About I25.85

Code
I25.85
Billable
Yes
Short description
Chronic coronary microvascular dysfunction
Category
I25 Chronic ischemic heart disease
Block
I20-I25 Ischemic heart diseases
Chapter
9 Diseases of the circulatory system
Code set
FY2027, October 1, 2026 to September 30, 2027
EvidencePulse™

Go deeper into coronary artery disease.

Ask about the latest evidence, the landmark trials or what guidelines recommend, with every study cited. No ads, no sponsored answers.

Ask EvidencePulse™

Coding notes for I25.85

Applicable to Other names for conditions reported with this code.

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

Also applies, from I25 Chronic ischemic heart disease

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

  • non-ischemic myocardial injury (I5A)

Use additional code Add a second code for the detail named here.

  • code to identify:
  • chronic total occlusion of coronary artery (I25.82)
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)
Block I20-I25 notes (apply to every code in it)

Code also Another code may be needed as well; the order depends on the encounter.

  • the presence of hypertension (I10-I1A)
Chapter 9 notes (apply to every code in it)

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Related codes in I25.8

Latest research on coronary artery disease

More Cardiology from 2 Minute Medicine

2MM+

Read the research behind every diagnosis

2MM+ gives you every study summary in full, Classics downloads of the landmark trials, EvidencePulse and HypeCheck, and ad-free reading.

See 2MM+ plans

ICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.