DA21.0 Achalasia

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

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.

inclusions

• Cardiospasm

exclusions

• congenital cardiospasm  (LB12)

code elsewhere

• Achalasia in Chagas disease  (1F53.3)

postcoordination

synonyms

• Achalasia
• aperistalsis of the oesophagus
• Cardiospasm
• achalasia of cardia
• achalasia of oesophagus
• oesophageal achalasia
• achalasia NOS
• cardia spasm
• cardia achalasia
• oesophageal cardiospasm
• oesophagus achalasia
• reflex cardiospasm
• Primary achalasia
• Idiopathic achalasia
• Non-Chagas achalasia
• Familial primary achalasia
• Sporadic primary achalasia

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