ICD-9-CM 530.13 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 530.13 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Allergic inflammation of the esophagus. Morphologically, it is characterized by the presence of eosinophils infiltrating the esophageal epithelium. Patients present with swallowing difficulty and heartburn
Chronic esophagitis characterized by esophageal mucosal eosinophilia. It is diagnosed when an increase in eosinophils are present over the entire esophagus. The reflux symptoms fail to respond to proton pump inhibitors treatment, unlike in gastroesophageal reflux disease. The symptoms are associated with ige-mediated hypersensitivity to food or inhalant allergens
2015 ICD-9-CM Diagnosis Code 530.13 
eosinophilic 530.13
