ICD-10-CM Alphabetic Index · FY 2027 12 Entries
Fibrillation in the ICD-10-CM Index ICD-10-CM
The main term Fibrillation carries 12 index entries pointing to 9 ICD-10-CM codes. Every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2027 index fileEffective Oct 1, 2026 – Sep 30, 2027
12
Index Entries
9
Codes Referenced
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Default Code
F
Letter
12 of 12 shown
ICD-10-CM
Index Entries Under Fibrillation 12 entries · 9 codes
Fibrillation
atrial or auricular (established) I48.91
chronic I48.20
persistent I48.19
paroxysmal I48.0
permanent I48.21
persistent (chronic) (NOS) (other) I48.19
longstanding I48.11
cardiac I49.89
heart I49.89
muscular M62.89
ventricular I49.01
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2027 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2026 through September 30, 2027.
