ICD-10-CM
ICD-10 code for Block, blocked Mobitz (types I and II): I44.1
The ICD-10-CM index points "Block, blocked Mobitz (types I and II)" to I44.1, Atrioventricular block, second degree. I44.1 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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More specific codes in I44
A header groups codes and is not billed. A billable code is one you can report.
- I44Atrioventricular and left bundle-branch blockHeader
- I44.0Atrioventricular block, first degreeBillable
- I44.1Atrioventricular block, second degreeBillable
- I44.2Atrioventricular block, completeBillable
- I44.3Other and unspecified atrioventricular blockHeader
- I44.30Unspecified atrioventricular blockBillable
- I44.39Other atrioventricular blockBillable
- I44.4Left anterior fascicular blockBillable
- I44.5Left posterior fascicular blockBillable
- I44.6Other and unspecified fascicular blockHeader
- I44.60Unspecified fascicular blockBillable
- I44.69Other fascicular blockBillable
- I44.7Left bundle-branch block, unspecifiedBillable
Related conditions
Related pages
- I44.1 code detailsNotes, nearby codes, CMS-HCC group
- Category I44Every code under it
- Chapter 9Diseases of the circulatory system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Block, blocked Mobitz (types I and II)?
The ICD-10-CM index points "Block, blocked Mobitz (types I and II)" to I44.1, Atrioventricular block, second degree. I44.1 is a billable code.
Is I44.1 billable?
Yes. I44.1 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is I44.1 in?
Chapter 9. Diseases of the circulatory system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.