| KXK — Source, Brachytherapy, Radionuclide | Class 2 / RA |
| KXM — System Accessories, Extracorporeal | Class 2 / GU |
| KXN — Monitor, Cardiac, Fetal | Class 2 / OB |
| KXO — Monitor, Pressure, Intrauterine | Class 2 / OB |
| KXP — Stent, Vaginal | Class 2 / OB |
| KXQ — Vibrator For Therapeutic Use, Genital | Class 2 / OB |
| KXR — Applicator, Resin | Class 1 / DE |
| KXS — Radioimmunoassay, Methaqualone | Class 2 / TX |
| KXT — Enzyme Immunoassay, Digoxin | Class 2 / TX |
| KXW — Adhesive, Denture, Carboxymethylcellulose Sodium (49%) And Ethylene-Oxide Homopolymer | Class 1 / DE |
| KXX — Adhesive, Denture, Karaya And Ethylene-Oxide Homopolymer | Class 1 / DE |
| KXY — Polyvinyl Methylether Maleic Anhydride &/Or Acid Copolymer & Carboxymethylce | Class 3 / DE |
| KXZ — System, Thermographic, Liquid Crystal, Powered (Adjunctive Use) | Class 3 / RA |
| KYA — System, Thermographic, Liquid Crystal, Nonpowered (Adjunctive Use) | Class 1 / RA |
| KYB — Lens, Guide, Intraocular | Class 1 / OP |
| KYD — Strip, Schirmer | Class 1 / OP |
| KYE — Inserter/Remover Contact Lens | Class 1 / OP |
| KYF — Implant, Eye Valve | Class 2 / OP |
| KYG — Device, Irrigation, Ocular Surgery | Class 1 / OP |
| KYH — Endoscope, Ophthalmic | Class 2 / OP |
| KYI — Prosthesis, Wrist, Carpal Trapezium | Class 2 / OR |
| KYJ — Prosthesis, Finger, Constrained, Polymer | Class 2 / OR |
| KYK — Prosthesis, Knee, Femorotibial, Semi-Constrained, Cemented, Metal/Composite | Class 2 / OR |
| KYM — Metallic Cemented Glenoid Hemi-Shoulder Prosthesis | Class 3 / OR |
| KYN — Prosthesis, Wrist, Constrained, Metal | Class 3 / OR |
| KYP — Snake Bite Suction Kit | Class 1 / HO |
| KYQ — Kit, Chemical Snake-Bite | Class 3 / HO |
| KYR — Bag, Ice | Class 1 / HO |
| KYS — Insoles, Medical | Class 1 / HO |
| KYT — Light, Examination, Medical, Battery Powered | Class 1 / HO |
| KYW — Container, Liquid Medication, Graduated | Class 1 / HO |
| KYX — Dispenser, Liquid Medication | Class 1 / HO |
| KYZ — Syringe, Irrigating (Non Dental) | Class 1 / HO |
| KZA — Device, Vein Location, Liquid Crystal | Class 1 / HO |
| KZB — Automated Colony Counter | Class 1 / MI |
| KZC — Manual Colony Counter | Class 1 / MI |
| KZD — Infusor, Pressure, For I.V. Bags | Class 1 / HO |
| KZE — Injector, Fluid, Non-Electrically Powered | Class 2 / HO |
| KZF — Device, Medical Examination, Ac Powered | Class 1 / HO |
| KZH — Introducer, Syringe Needle | Class 2 / HO |
| KZI — Culture Media, Enriched | Class 1 / MI |
| KZJ — Device, Gas Generating | Class 1 / MI |
| KZK — Reader, Zone, Automated | Class 1 / MI |
| KZL — Device, Warming. Blood And Plasma | Class 2 / HE |
| KZM — Device, Muscle Monitoring | Class 2 / DE |
| KZN — Scanner, Color | Class 2 / DE |
| KZO — Ink, Arch Tracing | Class 1 / DE |
| KZP — Solution, Cement Dissolving | Class 2 / DE |
| KZQ — Chromatography(Gas), Clinical Use | Class 1 / TX |
| KZR — Chromatography (Liquid, Gel), Clinical Use | Class 1 / TX |