Q40.8 Other specified congenital malformations of upper alimentary tract
The ICD-10-CM code for Other specified congenital malformations of upper alimentary tract is Q40.8 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- Q38-Q45: Other congenital malformations of the digestive system (Q38-Q45)
- Category Q40
- 7 codes (6 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to Q40.8:
- Patulous › alimentary tract › upper
- Hypoplasia, hypoplastic › alimentary tract, congenital › upper
- Agenesis › alimentary tract (complete) (partial) NEC › upper
- Absence (of) (organ or part) (complete or partial) › digestive organ (s) or tract, congenital › upper
- Absence (of) (organ or part) (complete or partial) › alimentary tract (congenital) › upper
- Agenesis › digestive organ (s) or tract (complete) (partial) NEC › upper
- Atresia, atretic › alimentary organ or tract NEC › upper
- Hypoplasia, hypoplastic › digestive organ (s) or tract NEC › upper (congenital)
U.S. Hospital Utilization
- An estimated 145 U.S. inpatient stays in 2023 included Q40.8 among the documented diagnoses.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
POA indicator for congenital conditions/anomalies and Q00-Q99 exceptionCongenital 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.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026