C26.9: Malignant neoplasm of ill-defined sites within the digestive system inclusionTerm Malignant neoplasm of alimentary canal or tract NOS Malignant neoplasm of gastrointestinal tract NOS excludes1 malignant neoplasm of abdominal NOS (C76.2) malignant neoplasm of intra-abdominal NOS (C76.2) |