T78.129 — Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified
T78.129 is a non-billable header ICD-10-CM code for other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T78
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T78.129 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
How T78.129 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to T78.129.
- Allergy, allergic›eggs›adverse reaction NEC
Code to one of these instead T78.129
3 child codes. Green means billable.
- T78.129AOther adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, initial encounter
- T78.129DOther adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, subsequent encounter
- T78.129SOther adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, sequela
Related codes at this level
Codes that share T78.12. If T78.129 is not quite right, the correct code is usually one of these.
Questions about T78.129
- Is T78.129 a billable ICD-10-CM code?
- No. T78.129 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T78.129 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Other and unspecified effects of external causes (T66-T78).