| OPX — Immunoglobulin A Kappa Heavy & Light Chain Combined | Class 2 / IM |
| OPY — Igal Heavy & Light Chain Combined | Class 2 / IM |
| OQB — Intervertebral Body Graft Containment Device | Class 2 / OR |
| OQG — Hip Prosthesis, Semi-Constrained, Cemented, Metal/Polymer, + Additive, Porous, Uncemented | Class 2 / OR |
| OQH — Hip, Semi-Constrained, Cemented, Metal/Polymer + Additive, Cemented | Class 2 / OR |
| OQI — Hip, Semi-Constrained, Cemented, Metal/Ceramic/Polymer + Additive, Porous Uncemented | Class 2 / OR |
| OQL — Mesh, Surgical, Deployment Balloon | Class 2 / SU |
| OQO — Herpes Simplex Virus Nucleic Acid Amplification Assay | Class 2 / MI |
| OQQ — Diagnostic Ultrasonic Transducer, Robotic | Class 2 / RA |
| OQS — Laboratory Developed Test | Class N / PA |
| OQT — Prostate Lesion, Documentation, System | Class 2 / GU |
| OQU — Airway Monitoring System | Class 2 / AN |
| OQW — 2009 H1n1 Influenza Virus (Swine Origin), Nucleic Acid Or Antigen, Detection And Identification | Class 2 / MI |
| OQX — Self-Contained Blood Grouping | Class 2 / HE |
| OQY — Intrauterine Tamponade Balloon | Class 2 / OB |
| OQZ — Anti-Mutated Citrullinated Vimentin Igg | Class 2 / IM |
| ORA — Breast Milk-Alcohol Test System | Class 2 / TX |
| ORC — Air Filter Portable Apparatus | Class 2 / HO |
| ORD — Optical Coherence Tomography, Intravascular Catheter | Class 2 / CV |
| ORG — Platelet And Plasma Separator For Bone Graft Handling | Class 2 / HE |
| ORH — Lamotrigine Assay | Class 2 / TX |
| ORI — Levetiracetam Assay | Class 2 / TX |
| ORK — Laser Assisted Lipolysis | Class 2 / SU |
| ORL — Whole Blood Pre-Treatment T-Cell Enrichment Reagent | Class 3 / MI |
| ORQ — Mesh, Surgical, Deployer | Class 2 / SU |
| ORR — Neurological Stereotaxic Instrument, Real-Time Intraoperative Mri | Class 2 / NE |
| ORT — Burst Suppression Detection Software For Electroencephalograph | Class 2 / NE |
| ORW — N95 Respirator With Antimicrobial/Antiviral Agent For Use By The General Public In Public Health Medical Emergencies | Class 2 / HO |
| ORY — Tongue Suspension System | Class 2 / DE |
| ORZ — Eyelid Thermal Pulsation System | Class 2 / OP |
| OSD — Massager, Therapeutic, To Internally Massage Trigger Points In The Pelvic Floor Musculature | Class 2 / PM |
| OSE — Patient Specific Manual Navigation System | Class 2 / OR |
| OSF — Patient Specific Manual Orthopedic Stereotaxic System | Class 2 / OR |
| OSG — Piezo-Electric Stimulator For Relief Of Mosquito Bite Itch | Class 2 / NE |
| OSH — Pedicle Screw Spinal System, Adolescent Idiopathic Scoliosis | Class 2 / OR |
| OSI — Bariatric Bed | Class 2 / HO |
| OSK — Anti-Glutamate Receptor (Type Nmda) Ifa | Class 2 / IM |
| OSL — Control, Fecal Occult Blood | Class 2 / HE |
| OSM — Hearing Aid, Air-Conduction With Wireless Technology, Prescription | Class 2 / EN |
| OSN — Software For Diagnosis/Treatment | Class 2 / OR |
| OSP — Uterine Electromyographic Monitor | Class 2 / OB |
| OSR — Pacemaker/Icd/Crt Non-Implanted Components | Class 3 / CV |
| OSU — Dengue Serological Reagents | Class 2 / MI |
| OSV — Insufflator, Endoscopic Vessel Harvesting | Class 2 / OB |
| OSX — Galectin-3 In Vitro Diagnostic Assay | Class 2 / CH |
| OSZ — Antimicrobial Keyboard | Class 2 / HO |
| OTA — Mass Spectrometer For Clinical Multiplex Test Systems | Class 2 / CH |
| OTD — Endovascular Suturing System | Class 2 / CV |
| OTE — Digital Breast Tomosynthesis | Class 3 / RA |
| OTF — Gabapentin Assay | Class 2 / TX |