ICD-10 Code T42.4X5A - Adverse effect of benzodiazepines, initial encounter

ICD-10-CM Diagnosis Code T42.4X5A

Diagnosis Code: T42.4X5A (Raw: T424X5A)

Description: Adverse effect of benzodiazepines, initial encounter

Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting.

Overview & Clinical Details

ICD-10-CM code T42.4X5A is designated for Adverse effect of benzodiazepines, initial encounter. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.