T78.129A — Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, initial encounter
T78.129A is a billable, specific ICD-10-CM code for other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category T78
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T78.129A 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.
Medicare coverage
T78.129A is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A60360Billing and Coding: Allergy Diagnostic Testing
- A60360Billing and Coding: Allergy Diagnostic Testing
- A60363Billing and Coding: Allergy Diagnostic Testing
- A60363Billing and Coding: Allergy Diagnostic Testing
Related codes at this level
Codes that share T78.129. If T78.129A is not quite right, the correct code is usually one of these.
Questions about T78.129A
- Is T78.129A a billable ICD-10-CM code?
- Yes. T78.129A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T78.129A 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).