ICD-10 Code T50.B15A - Adverse effect of smallpox vaccines, initial encounter

ICD-10-CM Diagnosis Code T50.B15A

Diagnosis Code: T50.B15A (Raw: T50B15A)

Description: Adverse effect of smallpox vaccines, 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 T50.B15A is designated for Adverse effect of smallpox vaccines, 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.