159Malignant Neoplasms: Other and ill-defined sites within the digestive organs and peritoneum
Neoplasms
What this reference tells you
159 is an Ontario diagnostic code describing “Malignant Neoplasms: Other and ill-defined sites within the digestive organs and peritoneum.” 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.