ICD-10-CM 2027
ICD-10 code for fibrillation
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Fibrillation”. Page updated September 29, 2026.
About coding fibrillation
The official ICD-10-CM index doesn't give a single default code for fibrillation; the code depends on the details below.
More specific fibrillation codes (official index)
- atrial or auricular (established) I48.91 — Unspecified atrial fibrillation
- chronic I48.20 — Chronic atrial fibrillation, unspecified
- persistent I48.19 — Other persistent atrial fibrillation
- paroxysmal I48.0 — Paroxysmal atrial fibrillation
- permanent I48.21 — Permanent atrial fibrillation
- persistent (chronic) (NOS) (other) I48.19 — Other persistent atrial fibrillation
- longstanding I48.11 — Longstanding persistent atrial fibrillation
- cardiac I49.89 — Other specified cardiac arrhythmias not elsewhere classified
- heart I49.89 — Other specified cardiac arrhythmias not elsewhere classified
- muscular M62.89 — Other specified disorders of muscle
- ventricular I49.01 — Ventricular fibrillation
Common questions about fibrillation ICD-10 codes
What is the ICD-10 code for atrial or auricular fibrillation?
- I48.91 — Unspecified atrial fibrillation.
What is the ICD-10 code for cardiac fibrillation?
- I49.89 — Other specified cardiac arrhythmias not elsewhere classified.
What is the ICD-10 code for heart fibrillation?
- I49.89 — Other specified cardiac arrhythmias not elsewhere classified.
What is the ICD-10 code for muscular fibrillation?
- M62.89 — Other specified disorders of muscle.
What is the ICD-10 code for ventricular fibrillation?
- I49.01 — Ventricular fibrillation.