Q42
Q42 — Congenital absence, atresia and stenosis of large intestine
Non-billable headerICD-10-CM
Q42 is a non-billable header ICD-10-CM code for congenital absence, atresia and stenosis of large intestine. It cannot be billed on its own: choose one of the more specific child codes below.
Includes
Conditions this code covers.
- congenital obstruction, occlusion and stricture of large intestine
Other codes that can never be billed with Q42
These codes carry an Excludes1 note pointing at Q42. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q42 alone.
Risk adjustment
Q42 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.
Code to one of these instead Q42
6 child codes. Green means billable.
- Q42.0Congenital absence, atresia and stenosis of rectum with fistula
- Q42.1Congenital absence, atresia and stenosis of rectum without fistula
- Q42.2Congenital absence, atresia and stenosis of anus with fistula
- Q42.3Congenital absence, atresia and stenosis of anus without fistula
- Q42.8Congenital absence, atresia and stenosis of other parts of large intestine
- Q42.9Congenital absence, atresia and stenosis of large intestine, part unspecified
Questions about Q42
- Is Q42 a billable ICD-10-CM code?
- No. Q42 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does Q42 sit in the tabular list?
- Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Other congenital malformations of the digestive system (Q38-Q45).