I44.2 Atrioventricular block, complete

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

Applicable to

• Complete heart block NOS
• Third degree block

Risk adjustment (HCC)

• CMS-HCC V28: HCC 238 — Specified Heart Arrhythmias
• CMS-HCC V22: HCC 96 — Specified Heart Arrhythmias
• ESRD V24: HCC 96

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 426.0 Atrioventricular block, complete

Diagnosis Index entries for I44.2

• Block, blocked › atrioventricular (incomplete) (partial) › with atrioventricular dissociation
• Block, blocked › atrioventricular (incomplete) (partial) › complete
• Block, blocked › atrioventricular (incomplete) (partial) › third degree
• Block, blocked › conduction › complete
• Block, blocked › heart › complete (atrioventricular)
• Block, blocked › heart › third degree (atrioventricular)
• Block, blocked › third degree
• Disease, diseased › Lenegre's
• Disease, diseased › Lev's (acquired complete heart block)
• Dissociation › auriculoventricular or atrioventricular (AV) (any degree) (isorhythmic) › with heart block
• Lenegre's disease
• Lev's disease or syndrome (acquired complete heart block)
• Rhythm › idioventricular
• Rytand-Lipsitch syndrome
• Syndrome › Lev's
• Syndrome › Rytand-Lipsitch

Nearby codes

• I44 Atrioventricular and left bundle-branch block
• I44.0 Atrioventricular block, first degree
• I44.1 Atrioventricular block, second degree
• I44.2 Atrioventricular block, complete (this code)
• I44.3 Other and unspecified atrioventricular block
• I44.30 Unspecified atrioventricular block
• I44.39 Other atrioventricular block
• I44.4 Left anterior fascicular block
• I44.5 Left posterior fascicular block