ICD-11 classes
13 Diseases of the digestive system
Diseases of oesophagus
DA21 — Motility disorders of oesophagus
DA21.0 — Achalasia
ICD-11 DA21.0 — Achalasia
Achalasia is an oesophageal smooth muscle motility disorder characterised by a loss of peristalsis in the distal oesophagus and a failure of lower oesophageal sphincter (LES) relaxation. Basic mechanism is the degeneration of neurons (ganglion cells) in the myenteric plexuses in the oesophageal wall, but the cause is still unclear.
It includes 1 item.
- Cardiospasm
It excludes 1 item.
- congenital cardiospasm (LB12)
It has no clarifying diagnoses.
The diagnosis is included in 1 another class.
- Achalasia in Chagas disease (1F53.3)