I25.85 Chronic coronary microvascular dysfunction
ICD-10-CM · CMS code reference
Official ICD-10-CM description: Chronic coronary microvascular dysfunction
Coding notes
From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.
Also covers
- Chronic (presentation of) coronary microvascular disease
- Coronary microvascular dysfunction NOS
Excludes2
Not part of this code, but both can be coded when both are documented.
- non-ischemic myocardial injury (I5A)
Use additional code
Add a second code for the following, when documented.
- 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)
Code also
A second code may be needed. Sequencing depends on the encounter.
- the presence of hypertension (I10-I1A)
Related codes
I25.810Atherosclerosis of coronary artery bypass graft(s) without angina pectoris ICD-10-CMI25.811Atherosclerosis of native coronary artery of transplanted heart without angina pectoris ICD-10-CMI25.812Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina… ICD-10-CMI25.82Chronic total occlusion of coronary artery ICD-10-CMI25.83Coronary atherosclerosis due to lipid rich plaque ICD-10-CMI25.84Coronary atherosclerosis due to calcified coronary lesion ICD-10-CMI25.89Other forms of chronic ischemic heart disease ICD-10-CMI25.9Chronic ischemic heart disease, unspecified ICD-10-CM
Common questions
Is I25.85 a billable code?
Yes. I25.85 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.