T88.1XXA — Other complications following immunization, not elsewhere classified, initial encounter
T88.1XXA is a billable, specific ICD-10-CM code for other complications following immunization, not elsewhere classified, 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 T88
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- vaccinia not from vaccine (B08.011)
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Generalized vaccinia
- Rash following immunization
Risk adjustment
T88.1XXA 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
T88.1XXA is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56559Billing and Coding: Allergy Skin Testing
- A57206Billing and Coding: Lumbar MRI
Related codes at this level
Codes that share T88.1. If T88.1XXA is not quite right, the correct code is usually one of these.
Questions about T88.1XXA
- Is T88.1XXA a billable ICD-10-CM code?
- Yes. T88.1XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T88.1XXA sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).
- What cannot be coded together with T88.1XXA?
- T88.1XXA carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.