ICD-11 classes
13 Diseases of the digestive system
Diseases of pancreas
LB21 — Structural developmental anomalies of pancreas
LB21.0 — Annular pancreas
ICD-11 LB21.0 — Annular pancreas
Annular pancreas is a distinct form of duodenal atresia in which the head of the pancreas forms a ring around the second portion of the duodenum. During the neonatal period, the clinical picture is dominated by epigastric distension with vomiting, which is nonbilious as the obstruction is usually supra-vaterian. Chromosomal abnormalities are present in one-third of cases of annular pancreas, with trisomy 21 (followed by trisomy 18 and 13) being the most frequently detected anomaly. Annular pancreas is an embryopathy resulting from an anomaly occurring early (towards the fourth week) in development.
The diagnosis includes nothing.
The diagnosis excludes nothing.
It has no clarifying diagnoses.
The diagnosis is coded elsewhere: