I44.0
ICD-10BillableAtrioventricular block, first degree
Official ICD-10-CM descriptor (FY2026)
Atrioventricular block, first degree
I44.0 is valid for submission on a claim — CMS flags it as a billable, specific code.
Related codes in I44
- I44.1Atrioventricular block, second degree
- I44.2Atrioventricular block, complete
- I44.3Other and unspecified atrioventricular blockcategory
- I44.4Left anterior fascicular block
- I44.5Left posterior fascicular block
- I44.6Other and unspecified fascicular blockcategory
- I44.7Left bundle-branch block, unspecified
Where this code sits
- Parent code
- I44
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.