I25.9

I25.9: Chronic ischemic heart disease, unspecified

Billable / specific codeICD-10-CM

I25.9 is a billable, specific ICD-10-CM code for chronic ischemic heart disease, unspecified. It is valid for submission on a claim.

Check I25.9 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Ischemic heart disease (chronic) NOS

Excludes2 inherited from the categories above I25.9

Not part of this code, but both may be coded when both are present.

Written on I25: Chronic ischemic heart disease

non-ischemic myocardial injury (I5A)

Other codes that can never be billed with I25.9

Their own Excludes1 notes name this code, so the conflict is not listed above.

I24.9Acute ischemic heart disease, unspecified

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I25.9 is named in 17 Medicare coverage policies: 17 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)
A56476Billing and Coding: Cardiac Radionuclide Imaging
A56500Billing and Coding: Cardiac Catheterization and Coronary Angiography

Alphabetic index entries that lead here

Deformity›coronary artery(acquired)
Ischemia, ischemic›heart(chronic or with a stated duration of over 4 weeks)
Ischemia, ischemic›myocardium, myocardial(chronic or with a stated duration of over 4 weeks)
Ischemia, ischemic›supply(coronary)
Deformity›artery NOS›coronary(acquired)
Disease, diseased›heart›ischemic(chronic or with a stated duration of over 4 weeks)

Code history

Unchanged in every release from FY2024 to FY2027.