| Chisel, Middle-Ear | Federal registry | 1 |
| Chisel, Nasal | Federal registry | 1 |
| Choledochoscope And Accessories, Flexible/Rigid | Federal registry | 1 |
| Circulator, Breathing-Circuit | Federal registry | 1 |
| Clamp, Eyelid, Ophthalmic | Federal registry | 1 |
| Clamp, Line | Federal registry | 1 |
| Clamp, Rubber Dam | Federal registry | 1 |
| Clamp, Surgical, General & Plastic Surgery | Federal registry | 1 |
| Clamp, Uterine | Federal registry | 1 |
| Cleanser, Denture, Over The Counter | Federal registry | 1 |
| Cleanser, Denture, Prescription | Federal registry | 1 |
| Clip, Scalp | Federal registry | 1 |
| Coagulator-Cutter, Endoscopic, Bipolar (And Accessories) | Federal registry | 1 |
| Collagen Corneal Shield | Federal registry | 1 |
| Components, Exercise | Federal registry | 1 |
| Components, Wheelchair | Federal registry | 1 |
| Compressor, Cardiac, External | Federal registry | 1 |
| Computer, Blood-Pressure | Federal registry | 1 |
| Computer, Diagnostic, Pre-Programmed, Single-Function | Federal registry | 1 |
| Computer, Oxygen-Uptake | Federal registry | 1 |
| Condom | Federal registry | 1 |
| Conformer, Ophthalmic | Federal registry | 1 |
| Connector, Blood Tubing, Infusion T | Federal registry | 1 |
| Connector, Catheter | Federal registry | 1 |
| Container, Specimen Mailer And Storage, Non-Sterile | Federal registry | 1 |
| Container, Specimen, Non-Sterile | Federal registry | 1 |
| Continuous Glucose Monitor Informed Insulin Dose Calculator | Federal registry | 1 |
| Contractor, Surgical | Federal registry | 1 |
| Control, Pump Speed, Cardiopulmonary Bypass | Federal registry | 1 |
| Coronary Covered Stent | Federal registry | 1 |
| Countersink | Federal registry | 1 |
| Counter, Sponge, Surgical | Federal registry | 1 |
| Cover, Mattress (Medical Purposes) | Federal registry | 1 |
| Cover, Shoe, Operating-Room | Federal registry | 1 |
| Coverslips, Microscope Slide | Federal registry | 1 |
| C-Reactive Protein, Antigen, Antiserum, And Control | Federal registry | 1 |
| Crutch | Federal registry | 1 |
| Culdoscope (And Accessories) | Federal registry | 1 |
| Culture Media, Anaerobic Transport | Federal registry | 1 |
| Culture Media, Antimicrobial Susceptibility Test, Excluding Mueller Hinton Agar | Federal registry | 1 |
| Culture Media, Antimicrobial Susceptibility Test, Mueller Hinton Agar/Broth | Federal registry | 1 |
| Culture Media, Enriched | Federal registry | 1 |
| Culture Media, For Isolation Of Pathogenic Neisseria | Federal registry | 1 |
| Culture Media, General Nutrient Broth | Federal registry | 1 |
| Culture Media, Multiple Biochemical Test | Federal registry | 1 |
| Culture Media, Non-Selective And Differential | Federal registry | 1 |
| Culture Media, Selective And Differential | Federal registry | 1 |
| Culture Media, Selective And Non-Differential | Federal registry | 1 |
| Culture Media, Single Biochemical Test | Federal registry | 1 |
| Cup, Menstrual | Federal registry | 1 |
