A33 — Tetanus neonatorum
A33 is a billable, specific ICD-10-CM code for tetanus neonatorum. It is valid for submission on a claim.
Other codes that can never be billed with A33
These codes carry an Excludes1 note pointing at A33. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A33 alone.
Risk adjustment
A33 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
A33 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
How A33 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 A33.
- Omphalitis›tetanus
- Tetanus, tetanic›neonatorum
- Trismus›neonatorum
- Trismus›newborn
Questions about A33
- Is A33 a billable ICD-10-CM code?
- Yes. A33 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A33 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).