The patient was treated in the office for abdominal cramping and bloody stools. A hemoccult test was positive for blood in the stool. The patient was scheduled for proctoscopy with biopsy two days later, and Duke C carcinoma of the colon was diagnosed. The patient was scheduled for proctectomy to the performed in seven days. The following diagnoses were documented on the patient's chart:

Match the diagnosis with the procedure and explain how each match shows medical necessity.

DIAGNOSIS                       PROCEDURE/SERVICE

abdominal cramping                Hemoccult lab test

blood in the stool                  Proctoscopy with biopsy

Duke C carcinoma, colon             Proctectomy