Q75.042 — Lambdoid craniosynostosis, bilateral
Q75.042 is a billable, specific ICD-10-CM code for lambdoid craniosynostosis, bilateral. It is valid for submission on a claim.
Other codes that can never be billed with Q75.042
These codes carry an Excludes1 note pointing at Q75.042. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q75.042 alone.
- Q75.058Other multi-suture craniosynostosis
Risk adjustment
Q75.042 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
Q75.042 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.
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
How Q75.042 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 Q75.042.
- Craniosynostosis›lambdoid›bilateral
Related codes at this level
Codes that share Q75.04. If Q75.042 is not quite right, the correct code is usually one of these.
Questions about Q75.042
- Is Q75.042 a billable ICD-10-CM code?
- Yes. Q75.042 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Q75.042 sit in the tabular list?
- Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations and deformations of the musculoskeletal system (Q65-Q79).