| Contractor, Surgical | Federal registry | 1 |
| Control, Cell Counter, Normal And Abnormal | Federal registry | 1 |
| Control, Hemoglobin | Federal registry | 1 |
| Control, Hemoglobin, Abnormal | Federal registry | 1 |
| Control, Pump Speed, Cardiopulmonary Bypass | Federal registry | 1 |
| Controls | Company website | 1 |
| Controls For Blood-Gases, (Assayed And Unassayed) | Federal registry | 1 |
| Control Systems | Company website | 1 |
| conventional machining | Company website | 1 |
| Cord, Retraction | Federal registry | 1 |
| Coronary Covered Stent | Federal registry | 1 |
| Coronary Drug-Eluting Stent | Federal registry | 1 |
| Coronary Mechanical Thrombectomy With Aspiration | Federal registry | 1 |
| Cotton, Roll | Federal registry | 1 |
| Countersink | Federal registry | 1 |
| Counter, Sponge, Surgical | Federal registry | 1 |
| Cover, Limb | Federal registry | 1 |
| Cover, Shoe, Operating-Room | Federal registry | 1 |
| Coverslips, Microscope Slide | Federal registry | 1 |
| Covid-19 Multi-Analyte Antigen Device | Federal registry | 1 |
| Crates | Company website | 1 |
| Crown And Bridge, Long-Term Temporary, Resin | Federal registry | 1 |
| Crystal Violet For Histology | Federal registry | 1 |
| C. Trachomatis (Chlamydia Group) | Federal registry | 1 |
| Cuff, Nerve | Federal registry | 1 |
| Cuff, Tracheal Tube, Inflatable | Federal registry | 1 |
| Culdoscope (And Accessories) | Federal registry | 1 |
| Curette, Adenoid | Federal registry | 1 |
| Curette, Ear | Federal registry | 1 |
| Curette, Nasal | Federal registry | 1 |
| Curette, Ophthalmic | Federal registry | 1 |
| Curette, Suction, Endometrial (And Accessories) | Federal registry | 1 |
| Curette, Surgical, General Use | Federal registry | 1 |
| Cushion, Flotation, Therapeutic | Federal registry | 1 |
| Custom LiFePO4 Battery Packs | Company website | 1 |
| Custom Packaging | Company website | 1 |
| Custom Solutions | Company website | 1 |
| Cutter, Surgical | Federal registry | 1 |
| Cystometer, Electrical Recording | Federal registry | 1 |
| Cystotome | Federal registry | 1 |
| Cystourethroscope | Federal registry | 1 |
| Cytomegalovirus (Cmv) Dna Quantitative Assay | Federal registry | 1 |
| DC Electronic Loads | Company website | 1 |
| Defoamer, Cardiopulmonary Bypass | Federal registry | 1 |
| Degreaser, Skin, Surgical | Federal registry | 1 |
| Dengue Serological Reagents | Federal registry | 1 |
| Dental Abutment Design Software For Dental Laboratory | Federal registry | 1 |
| Dental Cement W/Out Zinc-Oxide Eugenol As An Ulcer Covering For Pain Relief | Federal registry | 1 |
| Dental Implant Surgical Tray | Federal registry | 1 |
| Dentures | Company website | 1 |
