| Magnifier, Hand-Held, Low-Vision | Federal registry | 1 |
| Mallet, Surgical, General & Plastic Surgery | Federal registry | 1 |
| Marker, Ocular | Federal registry | 1 |
| Massager, Therapeutic, Electric | Federal registry | 1 |
| Media, Electroconductive | Federal registry | 1 |
| Medical Device Data System | Federal registry | 1 |
| Mesh, Surgical, Absorbable, Orthopaedics, Reinforcement Of Tendon | Federal registry | 1 |
| Mesh, Surgical, Collagen, Orthopaedics, Reinforcement Of Tendon | Federal registry | 1 |
| Mesh, Surgical, Deployer | Federal registry | 1 |
| Mesh, Surgical, Polymeric | Federal registry | 1 |
| Mesh, Surgical, Polymeric, Resorbable, Orthopedics, Reinforcement Of Ligament | Federal registry | 1 |
| Monitor, Breathing Frequency | Federal registry | 1 |
| Monitor, Physiological, Patient (Without Arrhythmia Detection Or Alarms) | Federal registry | 1 |
| Motor, Drill, Electric | Federal registry | 1 |
| Motor, Drill, Pneumatic | Federal registry | 1 |
| motors | Company website | 1 |
| Motor, Surgical Instrument, Ac-Powered | Federal registry | 1 |
| Motor, Surgical Instrument, Pneumatic Powered | Federal registry | 1 |
| Mouthguard, Over-The-Counter | Federal registry | 1 |
| Needle, Ophthalmic Suturing | Federal registry | 1 |
| Needle, Suturing, Disposable | Federal registry | 1 |
| Neurological Stereotaxic Instrument | Federal registry | 1 |
| Operating Room Accessories Table Tray | Federal registry | 1 |
| Orthopedic Manual Surgical Instrument | Federal registry | 1 |
| Orthosis, Cervical | Federal registry | 1 |
| Orthosis, Limb Brace | Federal registry | 1 |
| Orthosis, Lumbar | Federal registry | 1 |
| Orthosis, Lumbo-Sacral | Federal registry | 1 |
| Orthosis, Thoracic | Federal registry | 1 |
| Otoscope | Federal registry | 1 |
| oxides | Company website | 1 |
| Oximeter | Federal registry | 1 |
| Pacemaker Lead Adaptor | Federal registry | 1 |
| Pad, Heating, Powered | Federal registry | 1 |
| Passer | Federal registry | 1 |
| Pen, Marking, Surgical | Federal registry | 1 |
| Permanent Pacemaker Electrode | Federal registry | 1 |
| Pin, Fixation, Smooth | Federal registry | 1 |
| Powered Laser Surgical Instrument | Federal registry | 1 |
| Powered Light Based Non-Laser Surgical Instrument With Thermal Effect | Federal registry | 1 |
| Power Tools | Company website | 1 |
| Prism, Bar, Ophthalmic | Federal registry | 1 |
| Probe | Federal registry | 1 |
| Prosthesis, Thigh Socket, External Component | Federal registry | 1 |
| Pump, Portable, Aspiration (Manual Or Powered) | Federal registry | 1 |
| Punch, Corneo-Scleral | Federal registry | 1 |
| Rasp | Federal registry | 1 |
| Reamer | Federal registry | 1 |
| Regulator, Pressure, Gas Cylinder | Federal registry | 1 |
| Retractor, Fiberoptic | Federal registry | 1 |
