I44.0
Billable codeAtrioventricular block, first degree
The ICD-10 code for atrioventricular block, first degree is I44.0.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Laterality-specific codes exist for this condition — confirm the affected side is documented.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- I44.1Atrioventricular block, second degree
- I44.2Atrioventricular block, complete
- I44.3Other and unspecified atrioventricular blocknon-billable header
- I44.4Left anterior fascicular block
- I44.5Left posterior fascicular block
- I44.6Other and unspecified fascicular blocknon-billable header
- I44.7Left bundle-branch block, unspecified
- I44.0Atrioventricular block, first degree
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 42611
Associated MS-DRGs
I44.0 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.