ICD-10-CM Diagnosis Code T78.080S - Anaphylactic reaction due to egg with tolerance to baked egg, sequela (original) (raw)

T78.080S is a billable diagnosis code used to specify a medical diagnosis of anaphylactic reaction due to egg with tolerance to baked egg, sequela. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

T78.080S is a sequela code, includes a 7th character and should be used for complications that arise as a direct result of a condition like anaphylactic reaction due to egg with tolerance to baked egg. According to ICD-10-CM Guidelines a "sequela" code should be used for chronic or residual conditions that are complications of an initial acute disease, illness or injury. The most common sequela is pain. Usually, two diagnosis codes are needed when reporting sequela. The first code describes the nature of the sequela while the second code describes the sequela or late effect.