I49.2 Junctional premature depolarization

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from I49 Other cardiac arrhythmias

Excludes2 (not included here)

• bradycardia NOS (R00.1)
• neonatal dysrhythmia (P29.1-)
• sinoatrial bradycardia (R00.1)
• sinus bradycardia (R00.1)
• vagal bradycardia (R00.1)

Code first

• cardiac arrhythmia complicating:
• abortion or ectopic or molar pregnancy (O00-O07, O08.8)
• obstetric surgery and procedures (O75.4)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 238 — Specified Heart Arrhythmias
• CMS-HCC V22: HCC 96 — Specified Heart Arrhythmias
• RxHCC V08: HCC 193 — Atrial Arrhythmias
• ESRD V24: HCC 96

MS-DRG index

Defines the logic of DRG(s) 308-310 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 427.0 Paroxysmal supraventricular tachycardia (approximate)

Code annotations containing back-references to I49.2

Back-references to I49

• Code Also: M35.81 Multisystem inflammatory syndrome ("cardiac arrhythmia (I47-I49.-)")
• Type 2 Excludes: R00 Abnormalities of heart beat ("specified arrhythmias (I47-I49)")

Diagnosis Index entries for I49.2

• Contraction (s), contracture, contracted › premature › junctional
• Depolarization, premature › junctional
• Extrasystoles (supraventricular) › junctional
• Premature › contraction › atrioventricular
• Premature › contraction › junctional

Nearby codes

• I49 Other cardiac arrhythmias
• I49.0 Ventricular fibrillation and flutter
• I49.01 Ventricular fibrillation
• I49.02 Ventricular flutter
• I49.1 Atrial premature depolarization
• I49.2 Junctional premature depolarization (this code)
• I49.3 Ventricular premature depolarization
• I49.4 Other and unspecified premature depolarization
• I49.40 Unspecified premature depolarization
• I49.49 Other premature depolarization
• I49.5 Sick sinus syndrome