2025 ICD-10-CM Diagnosis Code I49.1

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Atrial premature depolarization

  • I49.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM I49.1 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I49.1 – other international versions of ICD-10 I49.1 may differ.

Applicable To

  • Atrial premature beats

The following code(s) above I49.1 contain annotation back-references

 that may be applicable to I49.1:

  • I00-I99  Diseases of the circulatory system
  • I49  Other cardiac arrhythmias

Approximate Synonyms

  • Atrial premature beats
  • Premature atrial contraction
  • Supraventricular premature beats

Clinical Information

  • A type of cardiac arrhythmia with premature atrial contractions or beats caused by signals originating from ectopic atrial sites. The ectopic signals may or may not conduct to the heart ventricles. Atrial premature complexes are characterized by premature p waves on ecg which are different in configuration from the p waves generated by the normal pacemaker complex in the sinoatrial node.
  • Ectopic impulses originating in the atria.

ICD-10-CM I49.1 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 308 Cardiac arrhythmia and conduction disorders with mcc
  • 309 Cardiac arrhythmia and conduction disorders with cc
  • 310 Cardiac arrhythmia and conduction disorders without cc/mcc

Convert I49.1 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I49.1:

  • Beat(s)
    • prematureI49.40
      • atrial I49.1
      • auricular I49.1
      • supraventricular I49.1
    • atrial, premature I49.1
  • Contraction(s)
    • premature
      • atrium I49.1
      • supraventricular I49.1
  • Depolarization, prematureI49.40
    • atrial I49.1
  • Ectopic, ectopia (congenital)
    • beatsI49.49
      • atrial I49.1
    • atrial beats I49.1
  • Extrasystoles (supraventricular) I49.49
    • atrial I49.1
    • auricular I49.1
  • Premature – see also condition
    • beatsI49.40
      • atrial I49.1
      • auricular I49.1
      • supraventricular I49.1
    • contraction
      • atrial I49.1
      • auricular I49.1
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