Coding and coverage · ICD-10-CM
Q42 Congenital absence, atresia and stenosis of large intestine
Report one of the more specific codes below.
Codes under this one
- Q42.0 Congenital absence, atresia and stenosis of rectum with fistula
- Q42.1 Congenital absence, atresia and stenosis of rectum without fistula
- Q42.2 Congenital absence, atresia and stenosis of anus with fistula
- Q42.3 Congenital absence, atresia and stenosis of anus without fistula
- Q42.8 Congenital absence, atresia and stenosis of other parts of large intestine
- Q42.9 Congenital absence, atresia and stenosis of large intestine, part unspecified
Instructional notes
Chapter 17
Excludes2Not included here: the patient may have both; report both when both are present.
Notes
- Codes from this chapter are not for use on maternal records
This code
Includes
- congenital obstruction, occlusion and stricture of large intestine
Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1) · Q38-Q45 Other congenital malformations of the digestive system (Q38-Q45)
Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.
Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.