| MZT — Device, Heimlich Maneuver Assist | Class 2 / AN |
| MZU — System, Test, Sodium, Enzymatic Method | Class 2 / CH |
| MZV — Test, System, Potassium, Enzymatic Method | Class 2 / CH |
| MZW — Dental Cement W/Out Zinc-Oxide Eugenol As An Ulcer Covering For Pain Relief | Class 2 / DE |
| MZY — Graft, Vascular, Stainless Steel Tunneler | Class 2 / CV |
| NAA — Lens, Intraocular, Accommodative | Class 3 / OP |
| NAB — Gauze / Sponge,Nonresorbable For External Use | Class 1 / SU |
| NAC — Dressing, Wound, Hydrophilic | Class 1 / SU |
| NAD — Dressing, Wound, Occlusive | Class 1 / SU |
| NAE — Dressing, Wound, Hydrogel Without Drug And/Or Biologic | Class 1 / SU |
| NAF — Antigen(Complexed),Prostate Specific,(Cpsa) | Class 3 / IM |
| NAH — System, Test, Tumor Marker, For Detection Of Bladder Cancer | Class 3 / IM |
| NAI — Lens, Prescription, Color Deficiency | Class 1 / OP |
| NAJ — Agents, Embolic, For Treatment Of Uterine Fibroids | Class 2 / OB |
| NAK — System, Test, Biotinidase | Class 2 / CH |
| NAL — Test, Immunoassay, Biosensor, Hcg | Class 2 / CH |
| NAM — Stimulator, Peripheral Nerve, Non-Implanted, For Urinary Incontinence | Class 2 / GU |
| NAN — Tester, Acoustic, Bone Quality | Class 3 / RA |
| NAO — Test, Carbohydrate Deficient Transferrin | Class 1 / CH |
| NAP — Cardiac Support Mesh Wrap | Class N / CV |
| NAQ — Lipoprotein, High Density, Hdl, Over The Counter | Class 1 / CH |
| NAS — Tympanometer | Class 2 / EN |
| NAV — Graft, Bypass, Coronary Artery | Class f / CV |
| NAW — Microspheres Radionuclide | Class 3 / RA |
| NAY — System, Surgical, Computer Controlled Instrument | Class 2 / SU |
| NAZ — Stimulator, Bladder | Class f / GU |
| NBC — Test, Natriuretic Peptide | Class 2 / CH |
| NBE — Sealant, Polymerizing | Class 3 / SU |
| NBF — Prosthesis, Retinal | Class f / OP |
| NBG — Marker, Colon | Class 2 / GU |
| NBH — Accessories, Arthroscopic | Class 1 / OR |
| NBK — System, Test, (Ihc), Tumor Marker, Monitoring, Bladder Cancer | Class 2 / PA |
| NBL — Laser, Fluorescence Caries Detection | Class 2 / DE |
| NBN — Generator, Shock-Wave, For Pain Relief | Class 3 / OR |
| NBO — Autoantibodies, Skin (Desmoglein 1 And Desmoglein 3) | Class 2 / IM |
| NBS — Autoantibodies, Lkm-1 (Liver/Kidney Microsome, Type 1) | Class 2 / IM |
| NBT — Antibodies, Saccharomyces Cerevisiae (S.Cerevisiae) | Class 2 / IM |
| NBV — Device, Engorgement, Clitoral | Class 2 / OB |
| NBW — System, Test, Blood Glucose, Over The Counter | Class 2 / CH |
| NBY — Suture, Surgical, Nonabsorbable, Expanded, Polytetraflouroethylene | Class 2 / SU |
| NBZ — Clamp And Cutter, Umbilical | Class 2 / OB |
| NCA — Clip, Implantable, For Coronary Artery Bypass Graft (Cabg) | Class 2 / SU |
| NCB — Weights, Eyelid, Implantable | Class 2 / OP |
| NCD — Test, Immunity, Cell Mediated, Mycobacterium Tuberculosis | Class 3 / MI |
| NCE — Injector, Capsular Tension Ring | Class 1 / OP |
| NCF — Aberrometer, Ophthalmic | Class 1 / OP |
| NCG — Neuropsychiatric Interpretative Electroencephalograph Assessment Aid | Class 2 / NE |
| NCJ — Telescope, Implantable, Miniature | Class 3 / OP |
| NCK — Button, Iris, Eye, Artificial | Class 1 / OP |
| NCL — Imager, Breast, Electrical Impedance | Class 3 / RA |