| Acronym | Meaning |
| HRT | Hormone Replacement Therapy |
| HS | Bedtime |
| HTN | Gestational Diabetes Mellitus |
| HX | History |
| I:E | Inspiratory To Expiratory Ratio |
| IABP | Intra-Aortic Balloon Pump |
| IBC | Iron Binding Capacity |
| IBD | Inflammatory Bowel Disease |
| IBS | Irritable Bowel Syndrome |
| IBW | Ideal Body Weight |
| ICCE | Intracapsular Cataract Extraction |
| ICF | Intermediate Care Facility |
| ICF | Imtermediate Care Facility |
| ICP | Intracranial Pressure |
| ICS | Intercostal Space |
| ICT | Inflammation Of Connective Tissue |
| ICT | Inflammation Of Connective Tissue |
| ICU | Intensive Care Unit |
| IDDM | Insulin Dependent Diabetes Mellitus |
| IDM | Infant Of Diabetic Mother |
| IE | Inspiratory Exerciser |
| IH | Infectious Hepatitis |
| IHD | Ischemic Heart Disease |
| IIP | Implantable Insulin Pump |
| IM | Intramuscular |
| IMV | Intermittent Mandatory Ventilation |
| INR | International Normalization Ratio |
| INR | International Normalization Ratio |
| IOF | International Operation Forces |
| IPAP | Inspiratory Positive Airway Pressure |
| IPD | Intermittent Peritoneal Dialysis |
| IPPB | Intermittent Positive Pressure Breathing |
| IPPV | Intermittent Positive Pressure Ventilation |
| ITP | Immune Thrombocytopenic Purpura |
| IUD | IntraUterine Device |
| IV | Intravenous |
| IVDA | IV Drug Abuse/Abuser |
| IVF | In Vitro Fertilization |
| IVF | In Vitro Fertilization |
| IVP | Intravenous Pyelography |
| JAMA | Journal Of The American Medical Association |
| JVD | Jugular Vein Distention |
| JVP | Jugular Venous Pressure |
| K | Potassium |
| K | Potassium |
| KCL | Potassium Chloride |
| KI | Potassium Iodide |
| KUB | Kidney |
| KVO | Keep Vein Open |
| L | & A Light And Accommodation |