- Halitosis (algorithm)
- Hammer Toes
- Headache, Chronic (algorithm)
- Headache, Cluster
- Headache, Migraine
- Headache, Tension
- Health Maintenance: 11–24 Years
- Health Maintenance: 25–45 Years
- Health Maintenance: 45–65 Years
- Health Maintenance: 65 Years and Above
- Health Maintenance: Birth to 10 Years
- Hearing Loss
- Heart Failure, Acutely Decompensated
- Heart Failure, Chronic
- Heart Murmur (algorithm)
- Heat Exhaustion and Heat Stroke
- Hematemesis (Bleeding, Upper GI) (algorithm)
- Hematuria
- Hematuria (algorithm)
- Hemianopia (algorithm)
- Hemochromatosis
- Hemophilia
- Hemorrhoids
- Henoch-Schönlein Purpura
- Heparin-Induced Thrombocytopenia
- Hepatic Encephalopathy
- Hepatitis, Autoimmune
- Hepatitis A
- Hepatitis B
- Hepatitis C
- Hepatoma
- Hepatorenal Syndrome
- Hernia
- Herpes, Genital
- Herpes Eye Infections
- Herpes Simplex
- Herpes Zoster
- Herpetic Whitlow
- Hiccups
- Hiccups, Persistent (algorithm)
- Hidradenitis Suppurativa
- Hirsutism
- HIV Infection and AIDS
- Hodgkin Lymphoma
- Homelessness
- Hordeolum (Stye)
- Horner Syndrome
- Hydrocele
- Hydrocephalus, Normal Pressure
- Hydronephrosis
- Hyperactive Reflexes (algorithm)
- Hyperbilirubinemia (algorithm)
- Hypercalcemia (algorithm)
- Hypercholesterolemia
- Hypercholesterolemia (algorithm)
- Hyperemesis Gravidarum
- Hypereosinophilic Syndrome
- Hypergammaglobulinemia (algorithm)
- Hyperglycemia (algorithm)
- Hyperkalemia
- Hyperkalemia (algorithm)
- Hyperlipidemia
- Hyperlipidemia (algorithm)
- Hyperlipidemia (Continued) (algorithm)
- Hypernatremia
- Hypernatremia (algorithm)
- Hyperparathyroidism
- Hyperprolactinemia
- Hypersensitivity Pneumonitis
- Hypersplenism
- Hypertension, Essential
- Hypertension, Secondary and Resistant
- Hypertension and Elevated Blood Pressure, Treatment (algorithm)
- Hypertensive Emergencies
- Hyperthyroidism
- Hypertriglyceridemia
- Hypertriglyceridemia (algorithm)
- Hypertrophic Cardiomyopathy
- Hypoactive Reflexes (algorithm)
- Hypoalbuminemia (algorithm)
- Hypocalcemia (algorithm)
- Hypoglycemia, Diabetic
- Hypoglycemia, Nondiabetic
- Hypoglycemia (algorithm)
- Hypokalemia
- Hypokalemia (algorithm)
- Hyponatremia
- Hyponatremia (algorithm)
- Hypoparathyroidism
- Hypotension, Orthostatic
- Hypotension (algorithm)
- Hypothermia
- Hypothermia (algorithm)
- Hypothyroidism, Adult
- Hypoxemia (algorithm)
5-Minute Clinical Consult