Q40 – Other congenital malformations of upper alimentary tract
ICD-10-CM 2027 diagnosis code · Other congenital malformations of the digestive system
ICD-10-CM code
Q40
- Code
Q40(claims format:Q40)- Description
- Other congenital malformations of upper alimentary tract
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- Block
- Q38-Q45 Other congenital malformations of the digestive system
Billable codes under Q40
Q40 is a header code and cannot be used on claims. Choose the most specific code:
- Q40.0 – Congenital hypertrophic pyloric stenosisBillable
- Q40.1 – Congenital hiatus herniaBillable
- Q40.2 – Other specified congenital malformations of stomachBillable
- Q40.3 – Congenital malformation of stomach, unspecifiedBillable
- Q40.8 – Other specified congenital malformations of upper alimentary tractBillable
- Q40.9 – Congenital malformation of upper alimentary tract, unspecifiedBillable
Frequently asked questions
What is ICD-10 code Q40?
Q40 is the ICD-10-CM code for other congenital malformations of upper alimentary tract, in the block Q38-Q45 (Other congenital malformations of the digestive system).
Is Q40 a billable code?
No. Q40 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.