| HNPCC | hereditary nonpolyposis colorectal cancer |
| HOCM | Hypertrophisch obstruktive Kardiomyopathie (=IHSS) |
| HOPS | Hirnorganisches Psychosyndrom |
| HOT | hämatogene Oxidationstherapie |
| HOT | hyperbare Sauerstofftherapie |
| Hp | Haptoglobin |
| HP | Helicobacter pylori |
| HPF | high power field |
| HPG | human pituitary gonadotropin |
| HPL | human placental lactogen (=HCS) |
| HPLC | high pressure liquid chromatography |
| HPMG | human postmenopausal gonadotropin |
| HPS | Hepato-pulmonales Syndrom |
| HPT | Hyperparathyreoidismus |
| HPV | human papilloma virus |
| HR | high risk |
| HR | Hormonrezeptor |
| HRCT | High Resolution Computertomographie |
| HRF | histamin releasing faktor |
| HRST | Herzrhythmusstörungen |
| HRT | Hormone Replacement Therapy |
| HS | Harnsäure |
| HSA | Hustensaft |
| HSAN | Heriditäre sensorisch-autonome Neuropathie |
| HSG | Hysterosalpingographie |
| HSM | Hepatosplenomegalie |
| HSM | Herzschrittmacher |
| HSN | Heriditäre sensorisch Neuropathie |
| HSP | heat-shock-protein |
| HSt | Hirnstamm |