| DOB | date of birth; doctor's order book |
|---|---|
| HTO | hospital transfer order |
| OC | obstetrical conjugate; occlusocervical; office call; on call; only child; optic chiasma; oral contra... |
| OE | on examination; order entry [system]; orofacial cleft; orthopedic examination; otitis externa; out-s... |
| POE | pediatric orthopedic examination; physician order entry; point of entry; polyoxyethylene; postoperat... |