Non-Billable / Non-Specific Code
ICD-10-CM I44 is the diagnosis code for Atrioventricular and left bundle-branch block. This code falls under the section "Other forms of heart disease" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where I44 sits in the ICD-10-CM classification helps ensure proper coding:
No, I44 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
I44 is the ICD-10-CM diagnosis code for "Atrioventricular and left bundle-branch block". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
I44 is located in Section I30-I5A — "Other forms of heart disease" within Chapter 9 of the ICD-10-CM Tabular List.
I44 has 8 sub-code(s) that provide more specific detail: I44.0, I44.1, I44.2, I44.3, I44.4 and more.
Use I44 when the patients documented diagnosis matches "Atrioventricular and left bundle-branch block" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Atrioventricular and left bundle-branch block is I44.
No, I44 is non-billable. Use a more specific sub-code for primary diagnosis billing.
I44 is in Chapter 9 of the ICD-10-CM Tabular List.
Yes, I44 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.