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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

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • K56Paralytic ileus and intestinal obstruction without hernia
  • Q43.6Congenital fistula of rectum and anus

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Q42

6 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.