I25.82 — Chronic total occlusion of coronary artery
I25.82 is a billable, specific ICD-10-CM code for chronic total occlusion of coronary artery. 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.
Code first
The underlying condition must be sequenced before this code.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Complete occlusion of coronary artery
- Total occlusion of coronary artery
Risk adjustment
I25.82 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
I25.82 is named in 25 Medicare coverage policies — 25 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
- A52868Billing and Coding: Transesophageal Echocardiography (TEE)
- A56476Billing and Coding: Cardiac Radionuclide Imaging
How I25.82 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 I25.82.
- Occlusion, occluded›coronary›chronic total
- Occlusion, occluded›coronary›total(chronic)
- Occlusion, occluded›artery›complete›coronary
- Occlusion, occluded›artery›coronary›chronic total
- Occlusion, occluded›artery›coronary›complete
- Occlusion, occluded›artery›coronary›total(chronic)
- Occlusion, occluded›artery›total›coronary
Related codes at this level
Codes that share I25.8. If I25.82 is not quite right, the correct code is usually one of these.
Questions about I25.82
- Is I25.82 a billable ICD-10-CM code?
- Yes. I25.82 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I25.82 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 I25.82?
- I25.82 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.