G9086 HCPCS - ONCOLOGY; DISEASE STATUS; COLON CANCER, LIMITED TO INVASIVE CANCER, ADENOCARCINOMA AS PREDOMINANT CELL TYPE; EXTENT OF DISEASE INITIALLY ESTABLISHED AS T1-4, N1-2, M0 WITH NO EVIDENCE OF DISEASE PROGRESSION, RECURRENCE, OR METASTASES (FOR USE IN A MEDICARE-APPROVED DEMONSTRATION PROJECT)