Medical Code Search: "Unspecified atrial fibrillation and atrial flutter"
Results for “Unspecified atrial fibrillation and atrial flutter” from ICD-10-CM. Code titles and billable status are read from the published releases.
Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources
Concept
What MedCoder took the search to mean, which registry answered first, and why these codes are shown.
What MedCoder understood
- You searched
- Unspecified atrial fibrillation and atrial flutter
- Search type
- Diagnosis / condition
- Primary registry
- ICD-10-CM
- Understood as a diagnosis or condition search, so ICD-10-CM is ranked first.
Recommended codes
The codes the published release carries for each pathway, each with the official evidence for the match.
Best matches
Under I48 Atrial fibrillation and flutter
Exact title · The official description is the searched wording
Why this matched
- The official description is the searched wording.
- The official description is the searched wording
- Sits under I48 Atrial fibrillation and flutter in the ICD-10-CM tabular.
- The tabular carries it at subcategory level.
- 2 codes below, all billable in the tabular hierarchy.
2 codes below, all billable
View all 2 billable child codes →Related codes
Secondary possibilities: neighbouring concepts, the primary code’s own tabular relationships, and every registry’s complete results.
Explore I48.9
I48.9 Unspecified atrial fibrillation and atrial flutter — what its code page carries, from the official tables.
ICD-10-CM
Its one match is shown above under Best matches.
Official source
Code titles, billable status and tabular instructions on this page are read from the published release files in force today: ICD-10-CM FY2027 (CMS and CDC). Open a code to see its official instructions quoted as published, the release and file it came from, its relationships and its change history. A search result is MedCoder’s match of your words to those files, not a code assignment.