- Chiropractic manipulation not of the spine
- Chlamydia Test
- Cholecystectomy
- Cholecystectomy with cholangiography
- Cholesterol level
- Chronic obstructive pulmonary disease (COPD)
- Circumcision, adult
- Closed treatment of dislocated finger joint with manipulation
- Coagulation assessment blood test
- Coagulation Function Measurement; D-dimer; quantitative
- CO Diffusion Capacity
- Collection of blood specimen from central or peripheral venous catheter
- Collection of capillary blood specimen
- Colonoscopy consultation performed prior to a screening colonoscopy procedure
- Colonoscopy, diagnostic
- Colonoscopy, with biopsy
- Colonoscopy, with tumor removal
- Colonoscopy, with tumor removal (SNARE)
- Colorectal cancer screening; alternative to g0105, screening colonoscopy, barium enema
- 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