I48.20
BillableChronic atrial fibrillation, unspecified
I48.20 is the ICD-10-CM code for Chronic atrial fibrillation, unspecified. It is a billable, specific code valid for reimbursement.
I00-I99 Diseases of the circulatory system
What this means — in plain language
MedlinePlus · NIHWhat is atrial fibrillation (AFib)? Atrial fibrillation, also known as AFib or AF, is one of the most common types of arrhythmias . Arrhythmias are problems with the rate or rhythm of your heartbeat. They can cause your heart to beat too slowly, too fast, or in an irregular way. If you have AFib, your heart beats irregularly and sometimes much faster than normal. Also, your heart's upper and lower chambers do not…
Read more about Atrial Fibrillation at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
- •Chronic persistent atrial fibrillation (I48.19)
Medications indicated for this condition
FDA labeling- Sotalol›
- DofetilideAntiarrhythmic [EPC]›
- Dabigatran Etexilate›
- RivaroxabanFactor Xa Inhibitor [EPC]›
- Propafenone›
- ApixabanFactor Xa Inhibitor [EPC]›
- DigoxinCardiac Glycoside [EPC]›
- Heparin›
- Ibutilide›
- Quinidine›
- Warfarin›
- Diltiazem Hci›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
- What is ICD-10 code I48.20?
- I48.20 is the ICD-10-CM code for "Chronic atrial fibrillation, unspecified". It falls under I00-I99 Diseases of the circulatory system.
- Is I48.20 a billable code?
- Yes — I48.20 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from I48.20?
- Excludes1 (not coded here): Chronic persistent atrial fibrillation (I48.19).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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