| Abbreviation | Definition |
|---|---|
| HBOC | hemoblogin-based oxygen carrier |
| HBOT | Hyperbaric Oxygen Therapy |
| HBP | high blood pressure |
| HBV | Hepatitis B Virus |
| HCBW | Home and Community-Based Waiver |
| HCCN | Health Center Controlled Network |
| HCDB(CDRH) | Hematology and Cytology Devices Branch (CDRH) |
| HCG | human chorionic gonadotropin |
| HCI | human-computer interaction |
| HCO | Health Care Organization |
| HCP | HealthCare Provider |
| HCPCS | HCFA (Health Care Financing Administration) Common Procedure Coding System |
| HCT | HematoCriT |
| HCT/P | human cellular and tissue-based products |
| HCTERS | Human Cell and Tissue Establishment Registration System |
| HCTRS | Human Cell and Tissue Establishment Registration System (usually seen as HCTERS) |
| HCTZ | HydroChloroThiaZide |
| HCV | Hepatitis C Virus |
| HDC | High-Dose Chemotherapy |
| HDE | Humanitarian Use Exemption |