537Diseases of Esophagus, Stomach and Duodenum: Other disorders of stomach and duodenum
Diseases of the Digestive System
What this reference tells you
537 is an Ontario diagnostic code describing “Diseases of Esophagus, Stomach and Duodenum: Other disorders of stomach and duodenum.” It supports the diagnosis field of a claim and is distinct from the fee code identifying the service.
Before using this code
Confirm the current Ministry publication, the patient and provider context, the date of service, and documentation supporting the claim. A searchable reference does not establish eligibility or guarantee payment.