2025 ICD-10-CM Diagnosis Code I44.2

Atrioventricular block, complete

  • I44.2 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 I44.2 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of I44.2 – other international versions of ICD-10 I44.2 may differ.

Applicable To

  • Complete heart block NOS
  • Third degree block

The following code(s) above I44.2 contain annotation back-references

 that may be applicable to I44.2:

  • I00-I99  Diseases of the circulatory system

Approximate Synonyms

  • Av block 3rd degree, complication of av nodal ablation
  • Complete atrioventricular block
  • Complete atrioventricular block (heart beat disorder)
  • Complete atrioventricular block as complication of atrioventricular nodal ablation
  • Complete atrioventricular block due to atrioventricular nodal ablation
  • Complete av block due to av nodal ablation

Clinical Information

  • A cardiac rhythm characterized by independent atrial and ventricular complexes with the atrial rate exceeding ventricular rate and complete failure of atrial impulses to conduct to the ventricle.
  • A disorder characterized by a dysrhythmia with complete failure of atrial electrical impulse conduction through the av node to the ventricles.
  • Complete failure of atrial electrical impulse conduction through the av node to the ventricles.

ICD-10-CM I44.2 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
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert I44.2 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 I44.2:

  • Block, blocked
    • atrioventricular (incomplete) (partial) I44.30
      • complete I44.2
      • with atrioventricular dissociation I44.2
      • third degree I44.2
    • conductionI45.9
      • complete I44.2
    • heartI45.9
      • complete I44.2 (atrioventricular)
      • third degree I44.2 (atrioventricular)
    • third degree I44.2
  • Disease, diseased – see also Syndrome
    • Lenegre’s I44.2
    • Lev’s I44.2 (acquired complete heart block)
  • Dissociation
    • auriculoventricular or atrioventricular (AV) (any degree) (isorhythmic) I45.89
      • with heart block I44.2
  • Lenegre’s disease I44.2
  • Lev’s disease or syndrome I44.2 (acquired complete heart block)
  • Rhythm
    • idioventricular I44.2
  • Rytand-Lipsitch syndrome I44.2
  • Syndrome – see also Disease
    • Lev’s I44.2
    • Rytand-Lipsitch I44.2
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