- Colorectal cancer screening; colonoscopy on individual at high risk
- Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk
- Complete blood cell count, with differential white blood cells, automated
- Complete blood count, automated
- Complete exam
- Confirmation test for Hepatitis C antibody
- Conization of cervix; loop electrode excision
- Copper level
- Coronary bypass with cardiac catheterization
- Coronary bypass without cardiac catheterization
- Correction, hallux valgus
- Correction, hammertoe
- Cortisol (hormone) measurement
- Cortisol Measurement
- Covid-19 antibody test
- Covid-19 current infection test
- C-peptide (protein) level
- Create eardrum opening
- Creatine kinase Level (cardiac enzyme) - Total
- Crushing of stone in urinary duct (ureter) using an endoscope
- Crushing of stone in urinary duct (ureter) with stent using an endoscope
- CT Angiogram Chest with and without Contrast
- CT angiography scan of abdomen
- CTA scan of abdomen
- CTA scan of head
- CTA scan of hip, knee, ankle, or foot
- CTA scan of neck
- CTA scan of pelvis
- CTA scan of shoulder, arm, or hand
- CT of abdomen without dye