Is ICD-10-CM code Q40 billable?

No, Q40 (Other congenital malformations of upper alimentary tract) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code Q40 belong to?

Q40 belongs to Chapter 17 of the ICD-10-CM tabular list: Q00–Q99 (Congenital Malformations, Deformations and Chromosomal Abnormalities).

Q40Non-billable

Other congenital malformations of upper alimentary tract

Congenital Malformations, Deformations and Chromosomal Abnormalities·Other congenital malformations of the digestive system (Q38-Q45)·category·FY 2026

Use a more specific code (6 billable)

Q40.0Congenital hypertrophic pyloric stenosis Q40.1Congenital hiatus hernia Q40.2Other specified congenital malformations of stomach Q40.3Congenital malformation of stomach, unspecified Q40.8Other specified congenital malformations of upper alimentary tract Q40.9Congenital malformation of upper alimentary tract, unspecified

CH17 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

inborn errors of metabolism (E70-E88)

Clinical Hierarchy

BillableHas subcodes

CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Q38-Q45Other congenital malformations of the digestive system (Q38-Q45)

Q40Other congenital malformations of upper alimentary tractNot billable

Q40.0Congenital hypertrophic pyloric stenosisBillable

Q40.1Congenital hiatus herniaBillable

Q40.2Other specified congenital malformations of stomachBillable

Q40.3Congenital malformation of stomach, unspecifiedBillable

Q40.8Other specified congenital malformations of upper alimentary tractBillable

Q40.9Congenital malformation of upper alimentary tract, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.