ICD-10-CM › Q42 Q42.9 Congenital absence, atresia and stenosis of large intestine, part unspecifiedBillable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis. Exempt from present-on-admission (POA) reporting.
Applies from Q42 Congenital absence, atresia and stenosis of large intestine Includes congenital obstruction, occlusion and stricture of large intestine Risk adjustment (HCC) CMS-HCC V28: HCC 78 — Intestinal Obstruction/Perforation MS-DRG index Defines the logic of DRG(s) 393-395 in MDC 06.
Approximate ICD-9-CM (GEMs) 751.2 Atresia and stenosis of large intestine, rectum, and anal canal (approximate)Code annotations containing back-references to Q42.9 Back-references to Q42 Type 1 Excludes: K56 Diagnosis Index entries for Q42.9 Absence (of) (organ or part) (complete or partial) › intestine (acquired) (small) › large › congenital Agenesis › colon Agenesis › intestine (small) › large Atresia, atretic › colon Atresia, atretic › intestine (small) › large Hypoplasia, hypoplastic › colon Hypoplasia, hypoplastic › intestine (small) › large Impervious (congenital) › intestine (small) › large Obstruction, obstructed, obstructive › intestine › congenital (small) › large Stenosis, stenotic (cicatricial) › colon › congenital Stenosis, stenotic (cicatricial) › intestine › congenital (small) › large Stricture › colon › congenital Stricture › intestine › congenital (small) › large Nearby codes Q42.0Q42.1Q42.2Q42.3Q42.8Q42.9 Congenital absence, atresia and stenosis of large intestine, part unspecified (this code)