| NCO — Implant, Cartilage, For Articular Cartilage Repair | Class 3 / OR |
| NCR — Apparatus, Cutting, Radiofrequency, Electrosurgical, Battery-Powered | Class 2 / OP |
| NCS — System, Imaging, Holography, Acoustic | Class 2 / RA |
| NCT — Instrument, Glucose, Noninvasive Technology | Class 3 / CH |
| NCV — Lithotripter, Shockwave (For Treating Gallbladder Stones) | Class 3 / GU |
| NCW — System, Test, Her-2/Neu, Monitoring | Class 2 / IM |
| NCX — System, Hypothermia, Intravenous, Cooling | Class 2 / NE |
| NCZ — Lens, Contact, For Color Vision Deficiency | Class 2 / OP |
| NDA — Helmet, Cranial, For Protective Use | Class 1 / PM |
| NDC — Calculator, Drug Dose | Class 2 / CH |
| NDD — Cerclage, Fixation, Metallic | Class 2 / OR |
| NDE — Rod, Fixation, Intramedullary And Accessories, Metallic And Non-Collapsible | Class 2 / OR |
| NDF — Plate, Fixation, Bone, Non-Spinal, Metallic | Class 2 / OR |
| NDG — Washer, Bolt, Nut, Non-Spinal, Metallic | Class 2 / OR |
| NDH — Nail, Fixation, Bone, Metallic | Class 2 / OR |
| NDI — Staple, Fixation, Bone, Metallic | Class 2 / OR |
| NDJ — Screw, Fixation, Bone, Non-Spinal, Metallic | Class 2 / OR |
| NDK — System, External Fixator (With Metallic Invasive Components) | Class 2 / OR |
| NDL — Pin, Fixation, Smooth, Metallic | Class 2 / OR |
| NDM — Pin, Fixation, Threaded, Metallic | Class 2 / OR |
| NDN — Cement, Bone, Vertebroplasty | Class 2 / OR |
| NDP — Accessories, Implant, Dental, Endosseous | Class 1 / DE |
| NDQ — System, Catheter Or Guidewire, Steerable (Magnetic) | Class 2 / NE |
| NDR — Enzyme Immunoassay, Inhibin-A | Class 1 / CH |
| NDS — Media, Culture, Ex Vivo, Tissue And Cell | Class 2 / GU |
| NDV — Test, Ecarin Clotting Time (Ect) | Class f / HE |
| NDW — Assay, Porphyrin, Spectrophotometry, Lithium | Class 2 / TX |
| NDY — Test, Cystatin C | Class 2 / CH |
| NDZ — Assay, Nucleic Acid Amplification, Growth Identification, Mycobacterium Tuberculosis | Class 1 / MI |
| NEA — Cement, Ear, Nose And Throat | Class 2 / EN |
| NEC — Bandage, Liquid, Skin Protectant | Class 1 / SU |
| NEG — Finger Semi-Constrained Pyrolytic Carbon Uncemented Prosthesis | Class 3 / OR |
| NEH — Anchor, Fascial | Class 2 / SU |
| NEI — Prosthesis, Condyle, Mandibular, Temporary | Class 2 / DE |
| NEJ — System, Cryosurgical, Liquid Nitrogen, For Gastroenterology | Class 2 / GU |
| NEK — Filler, Recombinant Human Bone Morphogenetic Protein, Collagen Scaffold With Metal Prosthesis, Osteoinduction | Class 3 / OR |
| NEO — System, Test, Osteocalcin | Class 2 / CH |
| NEP — System/Device, Pharmacy Compounding | Class 2 / HO |
| NEQ — Device, Telemedicine, Robotic | Class 2 / SU |
| NEU — Marker, Radiographic, Implantable | Class 2 / SU |
| NEW — Suture, Surgical, Absorbable, Polydioxanone | Class 2 / SU |
| NEY — System, Ablation, Microwave And Accessories | Class 2 / SU |
| NEZ — System, Imaging, Gastrointestinal, Wireless, Capsule | Class 2 / GU |
| NFA — Temporary Coronary Saphenous Vein Bypass Graft For Embolic Protection | Class 2 / CV |
| NFB — Conserver, Oxygen | Class 2 / AN |
| NFD — Selector, Color, Spectacle, Lens, Tint | Class 1 / OP |
| NFE — Materials, Polytetrafluoroethylene Vitreous Carbon, For Maxillofacial Alveolar Ridge Augmentation | Class 2 / DE |
| NFF — Device, Storage, Images, Ophthalmic | Class 1 / OP |
| NFG — Device, Communications, Images, Ophthalmic | Class 1 / OP |
| NFH — Digitizer, Images, Ophthalmic | Class 2 / OP |