Q33.4 — Congenital bronchiectasis
Q33.4 is a billable, specific ICD-10-CM code for congenital bronchiectasis. It is valid for submission on a claim.
Other codes that can never be billed with Q33.4
These codes carry an Excludes1 note pointing at Q33.4. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q33.4 alone.
Risk adjustment
Q33.4 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
Q33.4 is named in 11 Medicare coverage policies — 11 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52466Nebulizers - Policy Article
- A52466Nebulizers - Policy Article
- A52466Nebulizers - Policy Article
- A52466Nebulizers - Policy Article
How Q33.4 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 Q33.4.
- Bronchiectasis›congenital
Related codes at this level
Codes that share Q33. If Q33.4 is not quite right, the correct code is usually one of these.
Questions about Q33.4
- Is Q33.4 a billable ICD-10-CM code?
- Yes. Q33.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Q33.4 sit in the tabular list?
- Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of the respiratory system (Q30-Q34).