I44.30 Unspecified atrioventricular block

Billable ICD-10-CM code, FY2026.

Applies from I44.3 Other and unspecified atrioventricular block

Applicable to

• Atrioventricular block NOS

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 426.10 Atrioventricular block, unspecified (approximate)
• 426.50 Bundle branch block, unspecified (approximate)

Diagnosis Index entries for I44.30

• Block, blocked › atrioventricular (incomplete) (partial)
• Interruption › bundle of His

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
• I44.3 Other and unspecified atrioventricular block
• I44.30 Unspecified atrioventricular block (this code)
• I44.39 Other atrioventricular block
• I44.4 Left anterior fascicular block
• I44.5 Left posterior fascicular block
• I44.6 Other and unspecified fascicular block
• I44.60 Unspecified fascicular block