Q40.9

ICD-10Billable

Congenital malformation of upper alimentary tract, unsp

Official ICD-10-CM descriptor (FY2026)

Congenital malformation of upper alimentary tract, unspecified

Q40.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Congenital anomaly of upper alimentary tract
Congenital deformity of upper alimentary tract

Related codes in Q40

Where this code sits

Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0)
Block: Other congenital malformations of the digestive system (Q38-Q45)
Parent code: Q40

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.