ICD-10-CM 2027
ICD-10 code for Extrasystoles
From the official ICD-10-CM alphabetic index entry “Extrasystoles (supraventricular)”. Page updated September 29, 2026.
About coding Extrasystoles
The ICD-10-CM code for Extrasystoles is I49.49 (Other premature depolarization). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I49.49.
Within I49.4, choose I49.49 (Other premature depolarization) only when documentation doesn't support a more specific option: unspecified premature depolarization (I49.40).
Code first cardiac arrhythmia complicating: abortion or ectopic or molar pregnancy (O00-O07, O08.8) and obstetric surgery and procedures (O75.4).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific Extrasystoles codes (official index)
Common questions about Extrasystoles ICD-10 codes
What is the ICD-10 code for Extrasystoles?
- I49.49 — Other premature depolarization. More specific codes apply when the documentation supports them: I49.1, I49.1, I49.2, I49.3.
What is the ICD-10 code for atrial extrasystoles?
- I49.1 — Atrial premature depolarization.
What is the ICD-10 code for auricular extrasystoles?
- I49.1 — Atrial premature depolarization.
What is the ICD-10 code for junctional extrasystoles?
- I49.2 — Junctional premature depolarization.
What is the ICD-10 code for ventricular extrasystoles?
- I49.3 — Ventricular premature depolarization.
Is I49.49 billable?
- Yes. I49.49 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I49.49 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I49.49 as a principal diagnosis.
Is I49.49 a CC or MCC?
- No. I49.49 is neither a CC nor an MCC under MS-DRG v44.0.