Browse Medical Abbreviations
I
| I | iodine [element]; antibody (allergy testing); infant; incisal; independent |
| I&D | incision and drainage |
| I&O | intake and output |
| i.e. | that is (L. id est) |
| I/E | inspiratory/expiratory |
| IA | intra-articular; intra-arterial; intra-amniotic; incidental appendectomy |
| IABC | intra-aortic balloon counterpulsation |
| IABP | intra-aortic balloon pressure/pump |
| IAC | internal auditory canal; interposed abdominal compression (CPR) |
| IADL | instrumental activities of daily living |
| IAH | intra-abdominal hypertension |
| IAP | intra-abdominal pressure |
| IAW | in accordance with |
| IBC | iron binding capacity |
| IBCLC | international board certified lactation consultant |
| IBD | inflammatory bowel disease; irritable bowel disease |
| IBM | inclusion body myositis |
| IBP | inflammatory back pain |
| IBRP | independent bathroom privileges |
| IBS | irritable bowel syndrome |
| IBW | ideal body weight |
| IC | immune complex; infection control; informed consent; inspiratory capacity; interstitial cystitis; intracardiac |
| iCa | ionized calcium |
| ICAM | intercellular adhesion molecule |
| ICCE | intracapsular cataract extraction |
| ICD | International Classification of Diseases; implantable cardioverter-defibrillator; intrauterine contraceptive device; ischemic cardiac disease |
| ICE | ideas, concerns, and expectations |
| ICER | incremental cost effectiveness ratio |
| ICF | intermediate care facility; intracellular fluid |
| ICG | indocyanine green |
| ICH | intracerebral hemorrhage |
| ICMP | ischemic cardiomyopathy |
| ICN | International Council of Nurses |
| ICNSS | Intensive Care Nursing Scoring System |
| ICP | intracranial pressure; integrated care provider/partnership |
| ICS | intercostal space; inhaled corticosteroid |
| ICSH | interstitial cell-stimulating hormone |
| ICSI | intracytoplasmic sperm injection |
| ICT | insulin coma therapy |
| ICTV | International Committee on Taxonomy of Viruses |
| ICU | intensive care unit |
| ID | intradermal; identification; immunodiffusion; infectious disease |
| Id. | the same |
| IDA | Iron-deficiency anemia |
| IDC | institution disciplinary committee |
| IDD | insulin dependent diabetes; Intervertebral disc disorder |
| IDDM | insulin-dependent diabetes mellitus |
| IDG | interdisciplinary group |
| IDH | ischemic heart disease; isocitrate dehydrogenase |
| IDM | infant of diabetic mother |
| IDP | individual development plan |
| IDR | idiosyncratic drug reaction |
| IDT | interdisciplinary team |
| IDU | idouridizine; idoxuridine; injection drug user |
| IDV | indinavir (antiviral drug) |
| IED | improvised explosive device |
| IEE | intervention effect estimate |
| IEF | isoelectric focusing |
| IEM | inborn error of metabolism |
| IF | immunofluorescence; infertility; interferon; intrinsic factor |
| IFA | immunofluorescence assay |
| IFC | interferential current |
| IFE | immunofixation electrophoresis |
| IFG | impaired fasting glucose |
| IFN | interferon |
| IFN-g | Interferon-gamma |
| IFR | infection fatality ratio; instrument flight rules |
| iFR | instant wave-free ratio |
| IG | immune globulin(s) |
| Ig | immunoglobulin |
| IgA | immunoglobulin A |
| IgD | immunoglobulin D |
| IgE | immunoglobulin E |
| IGF | insulin-like growth factor |
| IGF-1 | insulin-like growth factor 1 |
| IGFR | insulin-like growth factor receptor |
| IgG | immunoglobulin G |
| IgG2 | immunoglobulin G2 |
| IGH | impaired glucose homeostasis |
| IGIV | immune globulin intravenous |
| IgM | immunoglobulin M |
| IGR | intrauterine growth retardation |
| IGRA | interferon gamma release assay |
| IGT | impaired glucose tolerance |
| IH | infectious hepatitis |
| IHC | immunohistochemistry |
| IHD | ischemic heart disease; intermittent hemodialysis |
| IHSS | idiopathic hypertrophic subaortic stenosis |
| II | intellectual impairment |
| IICP | increased intracranial pressure |
| IID | intermittent infusion device (saline lock) |
| IIF | indirect immunofluorescence |
| IIH | idiopathic intracranial hypertension |
| IIP | idiopathic interstitial pneumonia |
| IJ | internal jugular |
| IJO | idiopathic juvenile osteoporosis |
| IL | interleukin |
| IL-7R | interleukin 7 receptor |
| ILAR | International League of Associations for Rheumatology |
| ILD | interstitial lung disease |
| ILR | implantable loop recorder |
| IM | intramuscular; internal medicine; infectious mononucleosis |
| IMA | inferior mesenteric artery |
| IMA (L/R) | internal mammary artery-left/right |
| ImC | immature myeloid cell |
| IMC | intermediate care |
| imm | immunization |
| immed | immediate, immediately (at once) |
| IMP | investigational medicinal product |
| imp | impression |
| impair | impaired, impairment |
| IMRT | intensity-modulated radiation therapy |
| IMV | intermittent mandatory ventilation |
| In | indium [element] |
| IN | intranasal |
| in | inch (25.4 mm); inch |
| in d. | daily |
| in utero | within the uterus |
| INAD | infantile neuroaxonal dystrophy |
| INCL | infantile neuronal ceroid lipofuscinosis |
| incompat | incompatible |
| incompl | incomplete |
| incr | increase |
| ind | independent |
| IND | investigational new drug; investigational new drug |
| indic | indicate, indication |
| inf | infusion; infant; inferior |
| INF | interferon |
| InFeD | iron dextran |
| inflam | inflammation |
| Info | information |
| ing | inguinal |
| INH | Isoniazid |
| inh | inhalation |
| inhal | inhalation |
| inhib | inhibit, inhibitor |
| inj | injection; injury |
| iNO | inhaled nitric oxide |
| iNOS | inducible nitric oxide synthase |
| INPT | inpatient |
| INR | international normalized ratio |
| insp | inspiration |
| INSR | insulin receptor |
| inst | institution; instrument; instruction, instructed |
| insuff | insufficient |
| int | intermittent; internal |
| inv | inversion |
| IOC | involuntary outpatient commitment; intraoperative cholangiogram |
| IOI | intraosseous infusion |
| IOL | intraocular lens; intraocular lymphoma |
| IOM | Institute of Medicine |
| IOP | intensive outpatient program; intraocular pressure |
| IOV | initial office visit |
| IP | intraperitoneal; interphalangeal; inpatient; ice pack |
| IP joint | interphalangeal joint |
| IPA | Independent Practice Association |
| IPAP | inspired positive airway pressure |
| IPC | integrated personal commissioning |
| IPD | intermittent peritoneal dialysis |
| IPF | idiopathic pulmonary fibrosis |
| IPG | impedance plethysmography |
| IPI | International Prognostic Index |
| IPJ | interphalangeal joint |
| IPN | interstitial pneumonia |
| IPOC | interdisciplinary plan of care |
| IPP | intermittent positive pressure |
| IPPA | inspection, palpation, percussion and auscultation |
| IPPB | intermittent positive pressure breathing |
| IPPV | intermittent positive pressure ventilation |
| IPS | idiopathic pneumonia syndrome |
| IPSID | immunoproliferative small intestinal disease |
| IPSP | inhibitory postsynaptic potential |
| IPT | interpersonal psychotherapy |
| iPTH | intact parathyroid hormone |
| IPV | inactivated poliovirus (vaccine); intrapulmonary percussive ventilation |
| IQ | intelligence quotient |
| IQR | interquartile range |
| IR | interventional radiology; internal rotation; infrared |
| Ir | iridium [element] |
| IRB | institutional review board; investigational review board |
| IRDS | infant respiratory distress syndrome |
| IRIS | immune reconstitution inflammatory syndrome |
| irreg | irregular |
| irrig | irrigate, irrigation |
| IRS | identical, related, or similar |
| IRT | internal radiation therapy |
| IRV | inspiratory reserve volume |
| IS | incentive spirometry; intercostal space |
| ISA | intrinsic sympathomimetic activity |
| ISB | incentive spirometry breathing |
| ISDN | isosorbide dinitrate |
| ISG | immune serum globulin |
| ISH | isolated systolic hypertension; in situ hybridization |
| ISMN | isosorbide mononitrate |
| ISR | immune status ration; integrated stress response |
| ISWT | incremental shuttle walk test |
| IT | immunotherapy; information technology; intrathecal |
| ITB | iliotibial band |
| ITBVI | intrathoracic blood volume index |
| ITI | intratubal insemination |
| ITP | idiopathic/immune thrombocytopenia purpura |
| ITT | intent to treat; insulin tolerance test |
| ITU | intensive therapy unit |
| IU | international unit |
| IUCD | intrauterine contraceptive device |
| IUD | intrauterine device (contraceptive) |
| IUFD | intrauterine fetal death/demise |
| IUGR | intrauterine growth retardation |
| IUI | intrauterine insemination |
| IUO | investigation use only |
| IUP | intrauterine pregnancy |
| IUPC | intrauterine pressure catheter |
| IUS | intrauterine system |
| IV | intravenous |
| IV&V | independent verification and validation |
| IVAD | intravenous access device |
| IVC | inspiratory vital capacity; intravenous cholangiogram; inferior vena cava |
| IVCD | intra ventricular conduction delay |
| IVD | intervertebral disk disease; in vitro diagnostics |
| IVDA | intravenous drug abuse |
| IVDC | intravascular disseminated coagulation |
| IVDU | intravenous drug user |
| IVE | intravascular embolization |
| IVF | in vitro fertilization; intravenous feeding |
| IVH | intraventricular hemorrhage |
| IVHA | intravenous hyperalimentation |
| IVIG | intravenous immunoglobulin |
| IVMD | in vitro medical device |
| IVP | intravenous pyelogram; intravenous piggyback; intravenous push |
| IVPB | intravenous piggyback |
| IVR | interventional radiology; idioventricular rhythm |
| IVRA | intravenous regional anesthesia |
| IVRT | isovolumetric relaxation time |
| IVS | interventricular septum |
| IVSS | intravenous soluset |
| IVU | intravenous urography |
| IVUS | intravascular ultrasound |
| IWMI | inferior wall myocardial infarction |
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Abbreviations vary by context and institution. Many abbreviations have alternate or newer meanings not reflected in this set. The abbreviations on this page should not be considered complete.