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 Other congenital malformations of upper alimentary tract==
 * Q40.0 Congenital hypertrophic pyloric stenosis
 * Congenital or infantile constriction
 * Congenital or infantile hypertrophy
 * Congenital or infantile spasm
 * Congenital or infantile stenosis
 * Congenital or infantile stricture
 * Q40.1 Congenital hiatus hernia
 * Congenital displacement of cardia through esophageal hiatus
 * Excludes1: congenital diaphragmatic hernia (Q79.0)
 * Q40.2 Other specified congenital malformations of stomach
 * Congenital displacement of stomach
 * Congenital diverticulum of stomach
 * Congenital hourglass stomach
 * Congenital duplication of stomach
 * Megalogastria
 * Microgastria
 * 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
 * Congenital anomaly of upper alimentary tract
 * Congenital deformity of upper alimentary tract

Q41 Congenital absence, atresia and stenosis of small intestine

 * Includes: congenital obstruction, occlusion or stricture of small intestine or intestine NOS
 * Excludes1: cystic fibrosis with intestinal manifestation (E84.11)
 * meconium ileus NOS (without cystic fibrosis) (P76.0)
 * Q41.0 Congenital absence, atresia and stenosis of duodenum
 * Q41.1 Congenital absence, atresia and stenosis of jejunum
 * Apple peel syndrome
 * Imperforate jejunum
 * Q41.2 Congenital absence, atresia and stenosis of ileum
 * Q41.8 Congenital absence, atresia and stenosis of other specified parts of small intestine
 * Q41.9 Congenital absence, atresia and stenosis of small intestine, part unspecified
 * Congenital absence, atresia and stenosis of intestine NOS

Q42 Congenital absence, atresia and stenosis of large intestine

 * Includes: congenital obstruction, occlusion and stricture of large intestine
 * Q42.0 Congenital absence, atresia and stenosis of rectum with fistula
 * Q42.1 Congenital absence, atresia and stenosis of rectum without fistula
 * Imperforate rectum
 * Q42.2 Congenital absence, atresia and stenosis of anus with fistula
 * Q42.