ICD-10 Code T78.8XXA - Other adverse effects, not elsewhere classified, initial encounter

ICD-10-CM Diagnosis Code T78.8XXA

Diagnosis Code: T78.8XXA (Raw: T788XXA)

Description: Other adverse effects, not elsewhere classified, 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 T78.8XXA is designated for Other adverse effects, not elsewhere classified, 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.