ICD-10 Code K22.0 – Achalasia of cardia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K22.0 – Achalasia of cardia
What it is
K22.0 identifies achalasia of the cardia, a disorder where the lower esophageal sphincter fails to relax normally. This causes impaired passage of food and liquid from the esophagus into the stomach.
Clinical signs
Typical findings include dysphagia for solids and liquids, regurgitation of undigested food, and chest discomfort. Clinical features vary; refer to documentation for confirmed diagnostic findings such as imaging or manometry.
When to use this code
Use K22.0 when the provider documents achalasia, achalasia of the cardia, or a confirmed achalasia diagnosis affecting the esophagogastric junction. Apply it when the record supports the condition as the reason for evaluation, follow-up, or procedure planning.
Do not assign it for nonspecific dysphagia without a documented diagnosis. If the note only says “esophageal spasm” or another motility disorder, check documentation before coding.
Do not use for
Do not use K22.0 for gastroesophageal reflux disease, esophagitis, or mechanical obstruction. If the chart lacks a clear achalasia diagnosis, use a more specific documented code or check documentation.
Coding tip
Code K22.0 only when achalasia is explicitly documented; symptoms alone are not enough.