I48.20
I48.20: Chronic atrial fibrillation, unspecified
Billable / specific codeICD-10-CM
I48.20 is a billable, specific ICD-10-CM code for chronic atrial fibrillation, unspecified. It is valid for submission on a claim.
Check I48.20 with the rest of the claim: free scrubberExcludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- Chronic persistent atrial fibrillation (I48.19)
Risk adjustment
I48.20 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 238 Specified Heart Arrhythmias0.299 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. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
I48.20 is named in 36 Medicare coverage policies: 36 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A52868Billing and Coding: Transesophageal Echocardiography (TEE)
- A54831Billing and Coding: Single Chamber and Dual Chamber Permanent Cardiac Pacemaker
- A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)
- A56476Billing and Coding: Cardiac Radionuclide Imaging
Alphabetic index entries that lead here
- Fibrillation›atrial or auricular›chronic
The condition this code belongs to
Code history
Unchanged in every release from FY2024 to FY2027.