I44.1 – Atrioventricular block, second degree

ICD-10-CM 2027 diagnosis code · Other forms of heart disease

Billable code

ICD-10-CM code I44.1

Code: I44.1 (claims format: I441)
Description: Atrioventricular block, second degree
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I30-I5A Other forms of heart disease
Parent codes: I44

Notes for I44.1

Applicable to:

Atrioventricular block, type I and II
Möbitz block, type I and II
Second degree block, type I and II
Wenckebach's block

Index terms for I44.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in I44

I44.0 – Atrioventricular block, first degreeBillable
I44.2 – Atrioventricular block, completeBillable
I44.3 – Other and unspecified atrioventricular blockHeader
I44.4 – Left anterior fascicular blockBillable
I44.5 – Left posterior fascicular blockBillable
I44.6 – Other and unspecified fascicular blockHeader
I44.7 – Left bundle-branch block, unspecifiedBillable

Frequently asked questions

What is ICD-10 code I44.1?

I44.1 is the ICD-10-CM code for atrioventricular block, second degree, in the block I30-I5A (Other forms of heart disease).

Is I44.1 a billable code?

Yes. I44.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I44.1 belong to?

It belongs to category I44 – Atrioventricular and left bundle-branch block.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.