ICD-10-CM 2027
ICD-10 code for junctional depolarization
From the official ICD-10-CM alphabetic index entry “Depolarization, premature › junctional”. Page updated September 29, 2026.
About coding junctional depolarization
The ICD-10-CM code for junctional depolarization is I49.2 (Junctional premature depolarization).
Within I49 (other cardiac arrhythmias), I49.2 is specifically for junctional premature depolarization. Related codes cover ventricular fibrillation and flutter (I49.0), atrial premature depolarization (I49.1), ventricular premature depolarization (I49.3), other and unspecified premature depolarization (I49.4), sick sinus syndrome (I49.5), other specified cardiac arrhythmias (I49.8) and cardiac arrhythmia, unspecified (I49.9).
Code first cardiac arrhythmia complicating: abortion or ectopic or molar pregnancy (O00-O07, O08.8) and obstetric surgery and procedures (O75.4).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about junctional depolarization ICD-10 codes
What is the ICD-10 code for junctional depolarization?
- I49.2 — Junctional premature depolarization.
Is I49.2 billable?
- Yes. I49.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I49.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I49.2 as a principal diagnosis.
Is I49.2 a CC or MCC?
- I49.2 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.