ICD-10 Code K22.5 – Diverticulum of esophagus, acquired (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K22.5 – Diverticulum of esophagus, acquired
What it is
An acquired esophageal diverticulum is an outpouching of the esophageal wall that develops later in life. It can trap food or saliva and may cause swallowing complaints.
Clinical signs
Patients may report dysphagia, regurgitation of undigested food, cough, or a sensation of food sticking. Clinical features vary; refer to documentation.
When to use this code
Use K22.5 when the provider documents an acquired diverticulum of the esophagus, including a named type such as Zenker, if documented as acquired. Code it when the record clearly identifies the lesion as esophageal and not congenital or another GI condition. Check documentation if the site or cause is unclear.
Do not use for
Do not use this code for congenital diverticula or diverticula in other parts of the digestive tract. If the note describes a different esophageal disorder without a diverticulum, select the more specific diagnosis.
Coding tip
Verify the documentation states “acquired” and identifies the esophagus before assigning K22.5.