| Abbreviation | Definition |
|---|---|
| HIB | Hemophilus Influenza B |
| HIC | Head Injury Criteria |
| HIDA | Hepato-iminodiacetic Acid |
| HIE | Hypoxic Ischemic Encephalopathy |
| HIF | Hypoxia Inducible Factor |
| HIF | hypoxia-inducible factor |
| HIKE | Heart-Intensive Kinetic Energy |
| HIP | Health Improvement Project |
| HIP | Health Information Project |
| HIP | Help For Incontinent People |
| HIPAA | Health Insurance Portability and Accountability Act |
| HIPS | History, Inspection, Palpation, Special tests |
| hiPSCs | Human induced pluripotent stem cells |
| HIR | High Injury Risk |
| HIRT | Hopkins Image Recognition Test |
| HIS | HIV Incidence Surveillance |
| HISS | Holistic Inventory Of Stimulus Sensitivities |
| HIT | Headache Impact Test |
| HIT | Heparin Induced Thrombocytopenia |
| HIT | Heparin-Induced Thrombocytopænia |