| I.V. |
| ICD |
| Illicit drug abuse |
| Immune response |
| Immunity |
| Immunization – diphtheria |
| Immunization – hepatitis A |
| Immunization – hepatitis B |
| Immunization – influenza |
| Immunization – pertussis |
| Immunization – pneumovax |
| Immunization – tetanus |
| Immunizations – general overview |
| Implantable cardioverter-defibrillator |
| Impotence and age |
| Impotence caused by medications |
| Inactivated polio vaccine (IPV) |
| Incest – resources |
| Incidence |
| Incontinence – resources |
| Incontinence devices |
| Infant – newborn development |
| Infant of a substance-abusing mother |
| Infant skin characteristics |
| Infant test/procedure preparation |
| Infertility – resources |
| Inflammatory response |
| Influenza vaccine |
| Inheritance |
| Inheritance – autosomal dominant |
| Inheritance – autosomal recessive |
