ICD-10 Code T78.121A - Other adverse food reaction due to egg with reactivity to baked egg, initial encounter

ICD-10-CM Diagnosis Code T78.121A

Diagnosis Code: T78.121A (Raw: T78121A)

Description: Other adverse food reaction due to egg with reactivity to baked egg, initial encounter

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

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting (Excluded from No-Fault liability reporting).

Overview & Clinical Details

ICD-10-CM code T78.121A is designated for Other adverse food reaction due to egg with reactivity to baked egg, 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.