ICD-10-CM › S00-T88 › T66-T78 › T78.12 Other adverse food reaction due to eggs › T78.129
Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 3 more specific codes instead:
- T78.129A Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, initial encounter
- T78.129D Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, subsequent encounter
- T78.129S Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, sequela
This code requires a seventh character. See the rule below.
What has happened to this code
Every change the publisher made, from 2026 to now.
- FY2026 Added to the code set Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from T78 Adverse effects, not elsewhere classified
Seventh character required
- The appropriate 7th character is to be added to each code from category T78
Excludes2 - not included here
- complications of surgical and medical care NEC (T80-T88)
Inherited from the T66-T78 section Other and unspecified effects of external causes (T66-T78)
Code also
- , if applicable, place of occurrence, such as:
- highway rest stop (Y92.523)
- school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
- service areas as the place of occurrence of the external cause (Y92.52-)
- single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
- transport vehicle as the place of occurrence of the external cause (Y92.81-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Disorder > allergic
- Hypersusceptibility
- Reaction > allergic
- Sensitive, sensitivity
- Hypersensitive, hypersensitiveness, hypersensitivity
- Allergy, allergic > eggs > adverse reaction NEC
Codes in the same group
| Code | Description | Status |
|---|---|---|
| T78.120 | Other adverse food reaction due to egg with tolerance to baked egg | Not billable |
| T78.121 | Other adverse food reaction due to egg with reactivity to baked egg | Not billable |