| Abbreviation | Definition |
|---|---|
| HHMH | Howard Hubbard Memorial Hospital |
| HHN | Hand Held Nebulizer |
| HHN | Hospitals Health Networks |
| HHNT | Hammersmith Hospitals NHS Trust |
| HHP | Hearing Healthcare Providers |
| HHP | Holistic Health Practitioner |
| HHPN | Hospital Health Promotion Network |
| HHS | Hospital Hobo Syndrome |
| HI | Health Index |
| HI | High Isolation |
| HIAE | Hospital Israelita Albert Einstein |
| HIAS | Hospital Infantil Albert Sabin |
| HIC | Health Insurance Claim |
| HIC | Hospitals Insurance Company |
| HICP | Hospital Inspector Certification Program |
| HICPAC | Hospital Infection Control Practices Advisory Committee |
| HICS | Hospital Incident Command System |
| HIDA | Hospital Infections Disclosure Act |
| HIDD | hospital inpatient discharge data |
| HIDI | Hospital Industry Data Institute |