K22.0 Achalasia of cardia

Billable ICD-10-CM code, FY2026.

Applicable to

• Achalasia NOS
• Cardiospasm

Excludes1 (never code together)

• congenital cardiospasm (Q39.5)

Applies from K22 Other diseases of esophagus

Excludes2 (not included here)

• esophageal varices (I85.-)

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 530.0 Achalasia and cardiospasm (approximate)

Code annotations containing back-references to K22.0

Back-references to K22.0

• Type 1 Excludes: K22.4 Dyskinesia of esophagus ("cardiospasm (K22.0)")

Diagnosis Index entries for K22.0

• Achalasia (cardia) (esophagus)
• Aperistalsis, esophagus
• Cardiospasm (esophagus) (reflex) (stomach)
• Dilatation › esophagus › due to achalasia
• Incompetency, incompetent, incompetence › esophagogastric (junction) (sphincter)
• Megaesophagus (functional)
• Megaloesophagus (functional)
• Spasm (s), spastic, spasticity › cardia
• Syndrome › gastroesophageal › junction

Nearby codes

• K22 Other diseases of esophagus
• K22.0 Achalasia of cardia (this code)
• K22.1 Ulcer of esophagus
• K22.10 Ulcer of esophagus without bleeding
• K22.11 Ulcer of esophagus with bleeding
• K22.2 Esophageal obstruction
• K22.3 Perforation of esophagus