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  2. ICD-10-CM Codes List
  3. Q00-Q99
  4. Q38-Q45
  5. Other congenital malformations of upper alimentary tract (Q40)

Other congenital malformations of upper alimentary tract (Q40)

The ICD-10 code Q40 group is used to identify various congenital malformations of the upper alimentary tract, including specific conditions affecting the stomach and pylorus present from birth.

This section covers detailed conditions like Q40.0 for congenital hypertrophic pyloric stenosis, also known by synonyms such as congenital pyloric spasm and pyloric obstruction. This condition involves abnormal narrowing that affects stomach emptying. Q40.1 codes for congenital hiatus hernia (also called congenital diaphragmatic hernia), involving structural defects where part of the stomach pushes into the chest. Codes Q40.2 and Q40.3 cover other specified or unspecified congenital stomach malformations, including rare anomalies like gastric volvulus, agenesis, or ectopic gastric tissue, mentioned in synonyms such as gastric atresia and congenital pyloric membrane. Finally, Q40.8 and Q40.9 address other or unspecified congenital defects of the upper digestive tract, including tonsil asymmetry or congenital absence of stomach muscle. These codes are essential for precisely documenting congenital anatomical abnormalities in the upper digestive system for medical care and billing.

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Hypertrophy

General increase in bulk of a part or organ due to CELL ENLARGEMENT and accumulation of FLUIDS AND SECRETIONS, not due to tumor formation, nor to an increase in the number of cells (HYPERPLASIA).

Pyloric Stenosis

Narrowing of the pyloric canal with varied etiology. A common form is due to muscle hypertrophy (PYLORIC STENOSIS, HYPERTROPHIC) seen in infants.

Pyloric Stenosis, Hypertrophic

Narrowing of the pyloric canal due to HYPERTROPHY of the surrounding circular muscle. It is usually seen in infants or young children.