Q42 Congenital absence, atresia and stenosis of large intestine

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Congenital absence, atresia and stenosis of large intestine is Q42 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
Q38-Q45: Other congenital malformations of the digestive system (Q38-Q45)
Category Q42
7 codes (6 billable)
FY2026 Status
Stable since FY2024
Includes
  • congenital obstruction, occlusion and stricture of large intestine

Official Coding Guidelines

POA indicator for congenital conditions/anomalies and Q00-Q99 exception

Congenital conditions and anomalies Assign “Y” for congenital conditions and anomalies except for categories Q00- Q99, Congenital anomalies, which are on the exempt list. Congenital conditions are always considered present on admission.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section III

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference Q42 with the canonical source and edition:

Q42 — Congenital absence, atresia and stenosis of large intestine. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/Q42

Canonical URL: https://icd10codingpro.com/codes/Q42

Related Codes

More Specific Codes

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

All Codes in Q42

Every most-specific code under Q42 Congenital absence, atresia and stenosis of large intestine (6 codes):

Show the complete Q42 code list
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
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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