| HRSA | Health Resources and Services Administration |
|---|---|
| HSA | Hazardous Substances Act; Health Services Administration; health systems agency; hereditary siderobl... |
| HSMHA | Health Services and Mental Health Administration |
| MA | malignant arrhythmia; management and administration; mandelic acid; masseter; Master of Arts; matern... |
| MAR | main admissions room; marasmus; marrow; maximal aggregation ratio; medication administration record;... |