- Hand Deformities, Acquired
- Hand injuries
- Head Injury
- Headache
- Headache Disorders
- Hearing Loss
- Hearing Loss, Sensorineural
- Hearing Loss, Sudden
- Heart Arrest
- Heart Failure
- Hematoma
- Hemophilia A
- Hemorrhage
- Hemorrhoids
- Homocystinuria
- Hospital Communication Systems
- Hyperglycemia
- Hyperkalemia
- Hypertension
- Hypertrophy
- Hyperuricemia
- Hyperventilation
- Hyponatremia
- Hypothermia, Induced