| HAIRY PSALMS | Haven't Any Idea Regarding Your Patient, Send A Lot More Serum | - | NASA |
| HALS | Hit And Left Standing (apparently Uninjured But In Shock After RTA/MVA) | - | NASA |
| HBD | Has Been Drinking | - | NASA |
| HEA | Heel Elevation Ataxia - A Woman Who Appears Staggering Drunk, But Is Sober (or Slightly Tipsy) But Can't Walk On Seriously High Stiletto Heels | - | NASA |
| HHS | Hospital Hobo Syndrome - Person Who Visits Multiple Hospitals Seeking Attention Or Accommodation | - | NASA |
| HI5 | HIV Positive ("V" Being The Roman Numeral For 5) | - | NASA |
| HIBGIA | Had It Before, Got It Again | - | NASA |
| HIVI | Husband Is Village Idiot | - | NASA |
| HLCS | Happy Little Campers - Children In Oxygen Tents | - | NASA |
| HMF | Hysterical Mother Figure | - | NASA |
| HOP | House Of Pain (nursing Home) | - | NASA |
| HOPEFUL | Hard-up Old Person Expecting Full Useful Life (i.e. OAPs Are Not Priority For Most Hospitals) | - | NASA |
| HSPL | High Serum Porcelain Level - Patient Is A Crock Of Sh*t | - | NASA |
| HST | High Slug Titre - Lazy Patient (slug) That Won't Get Out Of Bed | - | NASA |
| HTD | Higher Than A Duck | - | NASA |
| HTK | Higher Than A Kite | - | NASA |
| HVLT | High Velocity Lead Poisoning: Gunshot Wound | - | NASA |
