| NTO — Rinse, Oral, Antibacterial (By Physical Means) | Class 2 / DE |
| NTR — Immunohistochemical Reagent, Antibody (Monoclonal Or Polyclonal) To P63 Protein In Nucleus Of Prostatic Basal Cells | Class 1 / PA |
| NTU — Evoked Potential Stimulator, Thermal | Class 2 / NE |
| NTV — Myeloperoxidase, Immunoassay, System, Test | Class 2 / TX |
| NTW — System, Blood Collection, Rna Stabilization, Rna Purification, Rt-Pcr Molecular Diagnostic Test | Class 2 / PA |
| NTX — Nursing Pad, Polyurethane Pad With Starch Copolymer, Glycerin, And Surfactant (F-68) | Class 1 / HO |
| NTY — System, Test, Fibrin/Fibrinogen Degradation Products For Monitoring Of Colorectal Cancer | Class 2 / IM |
| NTZ — Strip, Dialysate, Ph, Bicarbonate, Glucose, Acid, Indicator | Class 2 / GU |
| NUA — System, Cystic Fibrosis Transmembrane Conductance Regulator, Gene Mutation Detection | Class 2 / PA |
| NUB — Colonic Irrigation System, General Well Being | Class 3 / GU |
| NUC — Lubricant, Personal | Class 2 / OB |
| NUD — Vertebroplasty Compound, Calcium Based | Class 2 / OR |
| NUF — Catheter, Neurovasculature, Occluding Balloon | Class 3 / NE |
| NUH — Stimulator, Nerve, Transcutaneous, Over-The-Counter | Class 2 / NE |
| NUI — Ultrasound, Infusion, System | Class 2 / NE |
| NUJ — Electrosurgical, Cutting & Coagulation Accessories, Laparoscopic & Endoscopic, Reprocessed | Class 2 / SU |
| NUK — For Export Only - Antigen, Anti-Cardiac, Indirect Fluorescent Antibody Test System | Class N / CH |
| NUL — For Export Only - Antigen, Anti-Skeletal, Indirect Fluorescent Antibody Test System | Class N / CH |
| NUM — Autoantibodies, Nuclear Body Protein, Sp100 | Class 2 / IM |
| NUN — Bone Grafting Material, Human Source | Class 2 / DE |
| NUP — Cream, Nasal, Topical, Mechanical Allergen Particle Barrier | Class 2 / EN |
| NUQ — Pad, Menstrual, Reusable | Class 1 / OB |
| NUR — Pad, Menstrual, Intralabial | Class 1 / OB |
| NUU — Lens, Contact, Orthokeratology, Overnight | Class 3 / OP |
| NUV — Massager, Vacuum, Light Induced Heating | Class 2 / SU |
| NUW — Stimulator, Muscle, Powered, Dental | Class 2 / DE |
| NUX — Cleanser, Denture, Prescription | Class 1 / DE |
| NVA — Cancer Monitoring Test System, Soluble Mesothelin-Related Peptides, Mesothelioma | Class 2 / IM |
| NVB — Intraocular, Pressure Measuring Device | Class 3 / OP |
| NVC — Bone, Heterograft | Class 3 / OR |
| NVE — Washer, Cleaner, Automated, Endoscope | Class 2 / HO |
| NVG — Tissue Culture, Accessories, Dental | Class 1 / HE |
| NVH — Suture, Knot, Mechanical | Class 2 / SU |
| NVI — Diagnostic Software, K-Nearest Neighbor Algorithm, Autoimmune Disease | Class 2 / IM |
| NVJ — Applicator, Transurethral, Radio Frequency, For Stress Urinary Incontinence In Women | Class 2 / SU |
| NVK — Laser, Dental, Soft Tissue | Class 2 / DE |
| NVM — Catheter, Angioplasty, Peripheral, Transluminal, Dual-Balloon | Class 2 / CV |
| NVN — Drug Eluting Permanent Right Ventricular (Rv) Or Right Atrial (Ra) Pacemaker Electrodes | Class 3 / CV |
| NVO — Spacer, Direct Patient Interface | Class 2 / AN |
| NVP — Holding Chambers, Direct Patient Interface | Class 2 / AN |
| NVQ — Bacteriophage And Controls, B. Anthracis Lysis | Class 2 / MI |
| NVR — Intervertebral Fusion Device With Bone Graft, Solid-Sphere, Lumbar | Class 3 / OR |
| NVT — Tubing And Tubing/Filter Fits | Class 1 / OB |
| NVV — Digital Image, Storage And Communications, Non-Diagnostic, Laboratory Information System | Class 1 / CH |
| NVY — Permanent Defibrillator Electrodes | Class 3 / CV |
| NVZ — Pulse Generator, Permanent, Implantable | Class 3 / CV |
| NWA — Prosthesis, Tracheal, Preformed/Molded | Class 2 / AN |
| NWB — Endoscope, Accessories, Narrow Band Spectrum | Class 2 / GU |
| NWE — Colon Computed Tomography System, Computer Aided Detection | Class 2 / RA |
| NWF — Drill, Battery Powered, Subungual Hematoma | Class 1 / SU |