| Abbreviation | Definition |
|---|---|
| HEDS | Heds Eye Disease Study |
| HEDS | Herpetic Eye Disease Study |
| HEMI | hemiparesis |
| HEPX | Hepatitis |
| HFMD | Hand Foot and Mouth Disease |
| HFMD | Hand Foot Mouth Disease |
| HH | Hereditary Haemochromatosis |
| HHD | Hailey Hailey Disease |
| HHD | Hypertensive Heart Disease |
| HHS | hyper-osmotic hyperglycemic state |
| HHS | hyper-osmotic hyperglycemic state |
| HIB | Hæmophilus influenzae type b |
| HID | Health Issues from diseases |
| HIN | H influenza and |
| HIT | Heparin-Induced Thrombocytopænia |
| HIV1 | Human Immunodeficiency Virus-1 |
| HJD | Hospital for Joint Diseases |
| HL | hyperlipidemia |
| HLCD | Healthy Living and Chronic Disease |
| HLD | Hypersensitivity Lung Disease |