I25.790 — Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris
I25.790 is a billable, specific ICD-10-CM code for atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris. It is valid for submission on a claim.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- unstable angina without atherosclerosis of other coronary artery bypass graft(s) (I20.0)
Risk adjustment
I25.790 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 229 Unstable Angina and Other Acute Ischemic Heart Disease0.240 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
I25.790 is named in 61 Medicare coverage policies — 61 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A56423Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing
- A56423Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing
How I25.790 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I25.790.
- Arteriosclerosis, arteriosclerotic›coronary›bypass graft›specified type NEC›with›angina pectoris›unstable
Related codes at this level
Codes that share I25.79. If I25.790 is not quite right, the correct code is usually one of these.
- I25.791Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm
- I25.792Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris
- I25.798Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris
- I25.799Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris
Questions about I25.790
- Is I25.790 a billable ICD-10-CM code?
- Yes. I25.790 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I25.790 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Ischemic heart diseases (I20-I25).
- What cannot be coded together with I25.790?
- I25.790 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.