Q42
⚠ Non-billable
Congenital absence, atresia and stenosis of large intestine
ICD-10-CM · FY2026 · Congenital Malformations, Deformations and Chromosomal Abnormalities
Code
Q42
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Congenital Malformations, Deformations and Chromosomal Abnormalities
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Q42?
ICD-10-CM code Q42 represents Congenital absence, atresia and stenosis of large intestine. It is a non-billable header code requiring a more specific subcategory in the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter, effective October 1, 2025 – September 30, 2026.
Is Q42 billable?
No. Q42 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Q42 in?
Q42 belongs to the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter (Q00–Q99) of ICD-10-CM.
Related codes in the Q42 category
Q42.0
Congenital absence, atresia and stenosis of rectum with fistula
Billable
Q42.1
Congenital absence, atresia and stenosis of rectum without fistula
Billable
Q42.2
Congenital absence, atresia and stenosis of anus with fistula
Billable
Q42.3
Congenital absence, atresia and stenosis of anus without fistula
Billable
Q42.8
Congenital absence, atresia and stenosis of other parts of large intestine
Billable
Q42.9
Congenital absence, atresia and stenosis of large intestine, part unspecified
Billable
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