Wikipedia has a List of Medical Slang Terms

Wikipedia has an extensive list of Medical Abbreviations and Acronyms and since this was obviously insufficient, the "wisdom of crowds" assembled a complimentary list of Medical Slang Terms.

Some items are listed below:

• Baby Catcher - an obstetrician
  
  
• Bounceback - a patient who returns to the emergency department with the same complaints shortly after being released
  
  
• CNS-QNS - Central Nervous System - Quantity Not Sufficient
  
  
• Code Brown - a faecal incontinence emergency. Often used by nurses and medical technicians requesting help cleaning up an unexpected bowel movement
  
  
• Code Yellow - a patient who has lost control of his or her bladder
  
  
• Doc in a Box - a small health-care center, usually with high staff turnover
  
  
• Hasselhoff - a term for any patient who shows up in the emergency room with an injury for which there is a bizarre explanation. Original Source: Baywatch actor David Hasselhoff, who hit his head on a chandelier while shaving. The broken glass severed four tendons and an artery in his right arm.
  
  
• Shotgunning - ordering a wide variety of tests in the hope that one will show what's wrong with a patient
  
  

References:
Medical slang, from Wikipedia, the free encyclopedia.