| NKG — Posterior Cervical Screw System | Class 2 / OR |
| NKI — Goniometer With Electrodes | Class 2 / NE |
| NKJ — Cushion, Pad, Denture, Wax Impregnated Cotton, Over The Counter | Class 1 / DE |
| NKK — Needle, Hypodermic, Single Lumen, Reprocessed | Class 2 / HO |
| NKM — Mitral Valve Repair Devices | Class 3 / CV |
| NKN — Syringe, Piston, Reprocessed | Class 2 / HO |
| NKO — System, Balloon, Intra-Aortic And Control, Reprocessed | Class 3 / CV |
| NKP — Injector, Contrast Medium, Automatic, Reprocessed | Class 2 / HO |
| NKQ — Guidewire, Catheter, Reprocessed | Class 2 / CV |
| NKR — System, Catheter Control, Reprocessed | Class 2 / CV |
| NKS — Catheter, Steerable, Reprocessed | Class 2 / CV |
| NKT — Injector And Syringe, Angiographic, Reprocessed | Class 2 / HO |
| NKU — Injector And Syringe, Angiographic, Balloon Inflation, Reprocessed | Class 2 / CV |
| NKW — Actuator, Syringe, For Injector, Reprocessed | Class 2 / CV |
| NKX — Needle, Phacoemulsification, Reprocessed | Class 2 / OP |
| NKY — Blade, Keratome, Reprocessed | Class 1 / OP |
| NKZ — Endoilluminator, Reprocessed | Class 2 / OP |
| NLA — Knife, Ophthalmic, Reprocessed | Class 1 / OP |
| NLB — Trocar, Tracheal, Laryngeal, Sinus, Reprocessed | Class 1 / EN |
| NLC — Bracket, Plastic, Orthodontic, Reprocessed | Class 2 / DE |
| NLD — Instrument, Diamond, Dental, Reprocessed | Class 1 / DE |
| NLE — Forceps, Biopsy, Bronchoscope (Non-Rigid), Reprocessed | Class 2 / EN |
| NLF — Oximeter, Reprocessed | Class 2 / AN |
| NLG — Catheter, Intracardiac Mapping, High-Density, Reprocessed | Class 2 / CV |
| NLH — Catheter, Recording, Electrode, Reprocessed | Class 2 / CV |
| NLI — Catheter, Angiography, Reprocessed | Class 2 / CV |
| NLJ — Stripper, Vein, External, Reprocessed | Class 2 / CV |
| NLK — Needle, Biopsy, Cardiovascular, Reprocessed | Class 1 / SU |
| NLL — Staple, Implantable, Reprocessed | Class 2 / SU |
| NLM — Laparoscope, General & Plastic Surgery, Reprocessed | Class 2 / GU |
| NLN — Drills, Burrs, Trephines And Accessories (Simple Powered), Reprocessed | Class 2 / NE |
| NLO — Drills, Burrs, Trephines And Accessories (Manual), Reprocessed | Class 2 / NE |
| NLP — Drills, Burrs, Trephines, And Accessories (Powered Compound), Reprocessed | Class 2 / NE |
| NLQ — Single-Use Reprocessed Ultrasonic Surgical Instruments | Class U / SU |
| NLR — Unit, Electrosurgical, Endoscopic (With Or Without Accessories), Reprocessed | Class 2 / GU |
| NLS — Instrument, Biopsy, Reprocessed | Class 2 / GU |
| NLT — Snare, Flexible, Reprocessed | Class 2 / GU |
| NLU — Forceps, Biopsy, Electric, Reprocessed | Class 2 / GU |
| NLV — Electrode, Flexible Suction Coagulator, Reprocessed | Class 2 / GU |
| NLW — Electrode, Electrosurgical, Active, Urological, Reprocessed | Class 2 / GU |
| NLX — Needle, Pneumoperitoneum, Spring Loaded, Reprocessed | Class 2 / GU |
| NLY — Microdebrider, Ent, High Speed, Single Use, Reprocessed | Class 1 / EN |
| NLZ — Bur, Ent, Diamond Coated, Single Use, Reprocessed | Class 1 / EN |
| NMA — Tube, Tracheal, Reprocessed | Class 2 / AN |
| NMB — Catheter, Oximeter, Fiber Optic, Reprocessed | Class 2 / CV |
| NMC — Mask, Ventilator, Non-Continuous, Reprocessed | Class 2 / AN |
| NMD — Oximeter, Tissue Saturation, Reprocessed | Class 2 / CV |
| NME — Bur, Diamond Coated, Reprocessed | Class 1 / DE |
| NMF — Clamp, Vascular, Reprocessed | Class 2 / CV |
| NMG — Forceps, Biopsy, Gynecological, Reprocessed | Class 2 / OB |