ICD-10 Code I49.49 – Other premature depolarization (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I49.49 – Other premature depolarization
What it is
I49.49 identifies premature depolarizations that are not otherwise specified as atrial, junctional, or ventricular. Use it when the record documents an ectopic premature beat but does not name the origin more precisely.
Clinical signs
Patients may report palpitations, skipped beats, or brief irregular heartbeats. On ECG, premature beats appear earlier than expected; clinical features vary, so refer to documentation.
When to use this code
Use this code when the provider documents other premature depolarization and does not identify a more specific arrhythmia type. It is also appropriate when the note confirms premature beats but the origin is unclear or mixed. Check documentation if the rhythm description is incomplete.
Do not use for
Do not use I49.49 when the record specifies atrial, junctional, or ventricular premature beats, because those have different codes. Do not assign it for nonspecific palpitations without documented premature depolarization.
Coding tip
Code the most specific rhythm documented; if the origin is named, choose that code instead of I49.49.