| MKD — Stimulator, Functional Walking Neuromuscular, Non-Invasive | Class 3 / NE |
| MKJ — Automated External Defibrillators (Non-Wearable) | Class 3 / CV |
| MKN — Catheter, Balloon, Transcervical | Class 3 / OB |
| MKO — Falloposcope | Class 2 / OB |
| MKQ — Processor, Cervical Cytology Slide, Automated | Class 3 / PA |
| MKT — Hepatitis Viral B Dna Detection | Class 2 / MI |
| MKU — Enzyme Immunoassay, Nicotine And Nicotine Metabolites | Class 1 / TX |
| MKW — Cyclosporine | Class 2 / TX |
| MKY — System, Skin Closure | Class 1 / SU |
| MKZ — Dna Probe, Nucleic Acid Amplification, Chlamydia | Class 1 / MI |
| MLA — Dna Probe, Yeast | Class 1 / MI |
| MLC — Monitor, St Segment | Class 2 / CV |
| MLD — Monitor, St Segment With Alarm | Class 2 / CV |
| MLE — Enzyme Immunoassay, Antiparietal Cell Antibody, Antigen, Control | Class 2 / IM |
| MLH — Strip, Hama Igg, Elisa, In Vitro Test System | Class 2 / IM |
| MLK — Thin Layer Chromatography, Tricyclic Antidepressant Drugs | Class 2 / TX |
| MLL — Hemoglobin C (Abnormal Hemoglobin Variant) | Class 2 / HE |
| MLM — Enzyme Immunoassay, Tracrolimus | Class 2 / TX |
| MLN — Electrode, Electrocardiograph, Multi-Function | Class 2 / CV |
| MLO — Electrocardiograph, Ambulatory, With Analysis Algorithm | Class 2 / CV |
| MLP — Keratoprosthesis, Temporary Implant, Surgical Use | Class 2 / OP |
| MLQ — Inhibitor, Peridural Fibrosis (Adhesion Barrier) | Class 3 / NE |
| MLR — Sterilizer, Chemical | Class 2 / HO |
| MLS — Labor And Delivery Kit | Class 2 / OB |
| MLT — Pelvic Exam Kit | Class 2 / OB |
| MLV — Transcatheter Septal Occluder | Class 3 / CV |
| MLW — Warmer, Peritoneal Dialysate | Class 2 / GU |
| MLY — Vapocoolant Device | Class U / PM |
| MLZ — Vitrectomy, Instrument Cutter | Class 2 / OP |
| MMA — Oximeter, Fetal Pulse | Class 3 / OB |
| MMC — Dilator, Expansive Iris (Accessory) | Class 2 / OP |
| MMD — Toothbrush, Ionic, Battery-Powered | Class 1 / DE |
| MMF — Photorefractor | Class 2 / OP |
| MMH — Blood Establishment Computer Software And Accessories | Class 2 / HE |
| MMI — Immunoassay Method, Troponin Subunit | Class 2 / CH |
| MMK — Container, Sharps | Class 2 / HO |
| MML — Weights, Eyelid, External | Class 2 / OP |
| MMO — Tray, Surgical, Ent | Class 1 / EN |
| MMP — Cover, Barrier, Protective | Class 2 / HO |
| MMQ — Topographer, Corneal, Ac-Powered | Class 1 / OP |
| MMS — Lubricant, Vaginal, Patient | Class 1 / HO |
| MMT — Resin, Root Canal Filling Containing Chloroform | Class 3 / DE |
| MMU — Adhesive, Denture, Acacia And Karaya With Sodium Borate > 12% By Weight | Class 3 / DE |
| MMW — System, Test, Tumor Marker, Monitoring, Bladder | Class 2 / IM |
| MMX — Device, Percutaneous Retrieval | Class 2 / CV |
| MMY — Lipoprotein, Low Density, Removal | Class 3 / GU |
| MMZ — Table, Cystometric, Electric | Class 2 / GU |
| MNB — Device, Thermal Ablation, Endometrial | Class 3 / OB |
| MND — Ligator, Esophageal | Class 2 / GU |
| MNE — Orthosis, Moldable, Supportive, Skin Protective | Class 1 / PM |