| Calculator, Pulmonary Function Data | Federal registry | 2 |
| Caliper, Ophthalmic | Federal registry | 2 |
| Camera, Cine, Endoscopic, With Audio | Federal registry | 2 |
| Camera, Cine, Endoscopic, Without Audio | Federal registry | 2 |
| Camera, Still, Endoscopic | Federal registry | 2 |
| Camera, Television, Microsurgical, Without Audio | Federal registry | 2 |
| Cannula, Injection | Federal registry | 2 |
| Cannula, Manipulator/Injector, Uterine | Federal registry | 2 |
| Cannula, Sinus | Federal registry | 2 |
| Capsule, Dental, Amalgam | Federal registry | 2 |
| Catheter, Balloon Type | Federal registry | 2 |
| Catheter, Cannula And Tubing, Vascular, Cardiopulmonary Bypass | Federal registry | 2 |
| Catheter, Cholangiography | Federal registry | 2 |
| Catheter, Flow Directed | Federal registry | 2 |
| Catheter, Hemodialysis, Non-Implanted | Federal registry | 2 |
| Catheter, Hemodialysis, Triple Lumen, Non-Implanted | Federal registry | 2 |
| Catheter Introducer Kit | Federal registry | 2 |
| Catheter, Nephrostomy | Federal registry | 2 |
| Catheters, Transluminal Coronary Angioplasty, Percutaneous | Federal registry | 2 |
| Catheter, Ventricular, General & Plastic Surgery | Federal registry | 2 |
| Cerclage, Fixation | Federal registry | 2 |
| Chamber, Oxygen, Topical, Extremity | Federal registry | 2 |
| Cleanser, Root Canal | Federal registry | 2 |
| Closed Antineoplastic And Hazardous Drug Reconstitution And Transfer System | Federal registry | 2 |
| Coil, Magnetic Resonance, Specialty | Federal registry | 2 |
| Component, External, Limb, Ankle/Foot | Federal registry | 2 |
| Component, Traction, Invasive | Federal registry | 2 |
| Container, I.V. | Federal registry | 2 |
| Container, Specimen Mailer And Storage, Sterile | Federal registry | 2 |
| Coronary Drug-Eluting Stent | Federal registry | 2 |
| Coronavirus Antigen Detection Test System. | Federal registry | 2 |
| Cotton, Roll | Federal registry | 2 |
| Crown And Bridge, Long-Term Temporary, Resin | Federal registry | 2 |
| Cuff, Nerve | Federal registry | 2 |
| Cuff, Tracheal Tube, Inflatable | Federal registry | 2 |
| Culture Media, Non-Selective And Non-Differential | Federal registry | 2 |
| Culture Media, Selective Broth | Federal registry | 2 |
| Curette, Nasal | Federal registry | 2 |
| Curette, Suction, Endometrial (And Accessories) | Federal registry | 2 |
| Curette, Uterine | Federal registry | 2 |
| Device, Irrigation, Ocular Surgery | Federal registry | 2 |
| Device, Specimen Collection | Federal registry | 2 |
| Dilator, Lachrymal | Federal registry | 2 |
| Disinfectant, Medical Devices | Federal registry | 2 |
| Dislodger, Stone, Basket, Ureteral, Metal | Federal registry | 2 |
| Dislodger, Stone, Flexible | Federal registry | 2 |
| Drape, Surgical, Ent | Federal registry | 2 |
| Dressing, Wound, Hydrophilic | Federal registry | 2 |
| Drills, Burrs, Trephines & Accessories (Simple, Powered) | Federal registry | 2 |
| Drill, Surgical, Ent (Electric Or Pneumatic) Including Handpiece | Federal registry | 2 |