T78.129Header code — not billable

Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified

Short description: Other advrs food react d/t egg with baked egg tol/rct, unsp

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
T78
Effective date
October 1, 2026

Related codes in category T78

T78Adverse effects, not elsewhere classifiedT78.0Anaphylactic reaction due to foodT78.00Anaphylactic reaction due to unspecified foodT78.00XAAnaphylactic reaction due to unspecified food, init encntrYesT78.00XDAnaphylactic reaction due to unspecified food, subs encntrYesT78.00XSAnaphylactic reaction due to unspecified food, sequelaYesT78.01Anaphylactic reaction due to peanutsT78.01XAAnaphylactic reaction due to peanuts, initial encounterYesT78.01XDAnaphylactic reaction due to peanuts, subsequent encounterYesT78.01XSAnaphylactic reaction due to peanuts, sequelaYesT78.02Anaphylactic reaction due to shellfish (crustaceans)T78.02XAAnaphylactic reaction due to shellfish (crustaceans), initYes

Frequently asked questions

What is ICD-10 code T78.129?

T78.129 is an ICD-10-CM diagnosis code for Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified.

Is T78.129 a billable code?

No. T78.129 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is T78.129 in?

T78.129 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T78.129 become effective?

T78.129 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T78.129?

T78.129 belongs to category T78, which includes 12 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.