| LCh | Licentiate in Surgery |
|---|---|
| LDS | Licentiate in Dental Surgery; locked door seclusion |
| LMed&Ch | Licentiate in Medicine and Surgery |
| LMS | lateral medullary syndrome; left main stem [coronary artery]; leiomyosarcoma; Licentiate in Medicine... |
| LMSSA | Licentiate in Medicine and Surgery of the Society of Apothecaries |