| Abbreviation | Definition |
|---|---|
| ORIF | Operating Room Is Full |
| ORRF | On-line Referral Request Form |
| ORs | Operating Rooms |
| ORx | Non-Prescription Medicine |
| OSAGH | Ochsner St Anne General Hospital |
| OSB | Oral Systemic Balance |
| OSCA | Objective Structured Clinical Assessment |
| OSCAR | Open Source Clinical Application Resource |
| OSCE | Oral Simulated Clinical Examination |
| OSH | Oregon State Hospital |
| OSH | Oregon State Hospital's |
| OSH | Osawatomie State Hospital |
| OSHM | Office of State Hospital Management |
| OTA | Occupational Therapy Assistant |
| OTC | Over The Counter |
| OTFC | Oral Transmucosal Fentanyl Citrate |
| OTHA | Orthopaedic Trauma Hospital Association |
| OTP | Opioid Treatment Program |
| OTR/L | Occupational Therapist Registered and Licensed |
| OTRR | Office of Therapeutics Research and Review |