Q45.8
Other specified congenital malformations of digestive system
Q45.8 (also written Q458) is a billable ICD-10-CM diagnosis code for other specified congenital malformations of digestive system. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category Q45 (Other congenital malformations of digestive system). The Alphabetic Index lists it under 23 entries. Its coding notes include 3 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Chapter 17 codes can be used for life. Manifestations that are an inherent part of a specifically coded anomaly are not coded separately. A corrected malformation is reported with a personal history code.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- inborn errors of metabolism (E70-E88)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Other clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Inclusion terms
Conditions classified to this code.
- Absence (complete) (partial) of alimentary tract NOS
- Duplication of digestive system
- Malposition, congenital of digestive system
Notes
Also from chapter/block level (1 note)
- Codes from this chapter are not for use on maternal records
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 23 entries
- Absence (of) (organ or part) (complete or partial), alimentary tract (congenital)
- Absence (of) (organ or part) (complete or partial), digestive organ (s) or tract, congenital
- Agenesis, alimentary tract (complete) (partial) NEC
- Agenesis, digestive organ (s) or tract (complete) (partial) NEC
- Atresia, atretic, alimentary organ or tract NEC
- Atresia, atretic, digestive organs NEC
- Cyst (colloid) (mucous) (simple) (retention), omentum (lesser), congenital
- Duplication, duplex, alimentary tract
- Duplication, duplex, digestive organs
- Ectopic, ectopia (congenital), abdominal viscera
- Exstrophy, abdominal contents
- Hydromphalos (since birth)
Show 11 more
- Hypoplasia, hypoplastic, alimentary tract, congenital
- Hypoplasia, hypoplastic, digestive organ (s) or tract NEC
- Imperfect, closure (congenital), alimentary tract NEC
- Malformation (congenital), alimentary tract, specified type NEC
- Malformation (congenital), digestive system NEC, specified type NEC
- Malposition, congenital, alimentary tract
- Malposition, congenital, digestive organ or tract NEC
- Malposition, congenital, gastrointestinal tract
- Malposition, gastrointestinal tract, congenital
- Patulous, alimentary tract
- Stricture, digestive organs NEC, congenital