Q40.2 Other specified congenital malformations of stomach

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

• Congenital displacement of stomach
• Congenital diverticulum of stomach
• Congenital hourglass stomach
• Congenital duplication of stomach
• Megalogastria
• Microgastria

MS-DRG index

Defines the logic of DRG(s) 393-395 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 750.7 Other specified anomalies of stomach (approximate)

Code annotations containing back-references to Q40.2

Back-references to Q40.2

• Type 1 Excludes: K31.2 Hourglass stricture and stenosis of stomach ("congenital hourglass stomach (Q40.2)")
• Type 1 Excludes: K31.4 Gastric diverticulum ("congenital diverticulum of stomach (Q40.2)")

Diagnosis Index entries for Q40.2

• Absence (of) (organ or part) (complete or partial) › stomach (acquired) (partial) › congenital
• Agenesis › gastric
• Agenesis › stomach
• Anomaly, anomalous (congenital) (unspecified type) › cascade stomach
• Anomaly, anomalous (congenital) (unspecified type) › hourglass stomach
• Contraction (s), contracture, contracted › hourglass › stomach › congenital
• Contraction (s), contracture, contracted › stomach › hourglass › congenital
• Displacement, displaced › gastric mucosa (congenital)
• Displacement, displaced › stomach, congenital
• Diverticulum, diverticula (multiple) › stomach (acquired) › congenital
• Duplication, duplex › stomach
• Ectopic, ectopia (congenital) › gastric mucosa
• Fistula (cutaneous) › gastrocolic › congenital
• Hourglass (contracture) › stomach › congenital
• Malformation (congenital) › stomach › specified type NEC
• Malposition › congenital › stomach
• Malposition › stomach › congenital
• Megalogastria (acquired) › congenital
• Microgastria (congenital)
• Obstruction, obstructed, obstructive › stomach NEC › congenital
• Stricture › stomach › congenital
• Transposition (congenital) › stomach

Nearby codes

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