| Abbreviation | Definition |
|---|---|
| IHMS | International Health and Medical Services |
| IHMS | International Health Monitoring System |
| IHMS | Internet Health Monitoring System |
| IHN | Institute of Health and Neurodevelopment |
| IHN | InterCommunity Health Network |
| IHO | Impact Health Organization |
| IHO | Indian Health Organisation |
| IHO | Institute for Healthcare Optimization |
| IHO | Institute for Healthcare Optimization's |
| IHO | Integrated Health Outreach |
| IHO | International Health Olympiad |
| IHO | International Health Organization |
| IHOA | Illinois Health Occupations Association |
| IHOA | Individual Health Opportunity Assessment |
| IHP | Individualized Healthcare Plans |
| IHP | Ingham Health Plan |
| IHP | Innovative Health Plan |
| IHP | Institute of Health Professions |
| IHP | Integrated Health Partnerships |
| IHP | Integrated Health Plan |