ICD-10-CM Diagnosis Code T40.604A
Diagnosis Code: T40.604A (Raw: T40604A)
Description: Poisoning by unspecified narcotics, undetermined, 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 T40.604A is designated for Poisoning by unspecified narcotics, undetermined, 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.