Browse Medical Abbreviations
I
| I | antibody (allergy testing); infant; Iodine (element); incisal; independent |
| I&D | incision and drainage |
| I&O | intake and output |
| i.e. | that is (id est) |
| I/E | inspiratory/expiratory |
| IA | incidental appendectomy; intra-amniotic; intra-arterial |
| 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 |
| IAW | in accordance with |
| IBC | iron binding capacity |
| IBCLC | international board certified lactation consultant |
| IBD | inflammatory bowel disease |
| IBM | inclusion body myositis |
| 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 |
| 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 |
| ICH | intracerebral hemorrhage |
| ICMP | ischemic cardiomyopathy |
| ICN | International Council of Nurses |
| 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 | identification; immunodiffusion; infectious disease; intradermal |
| Id. | the same |
| IDA | Iron-deficiency anemia |
| IDC | institution disciplinary committee |
| IDD | insulin dependent diabetes |
| 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 | immunoglobulin |
| IG | immune globulin(s) |
| IgA | immunoglobulin A |
| IgD | immunoglobulin D |
| IgE | immunoglobulin E |
| IGF | insulin-like growth factor |
| IGF-1 | insulin-like growth factor 1 |
| IgG | immunoglobulin G |
| 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 |
| IHD | ischemic heart disease |
| IHSS | idiopathic hypertrophic subaortic stenosis |
| II | intellectual impairment |
| IICP | increased intracranial pressure |
| IID | intermittent infusion device (saline lock) |
| IIF | indirect immunofluorescence |
| IJ | internal jugular |
| IL | interleukin |
| ILAR | associations for rheumatology |
| IM | infectious mononucleosis; intramuscular; internal medicine |
| IMA | inferior mesenteric artery |
| IMA (L/R) | internal mammary artery-left/right |
| 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 | inch (25.4 mm); inch |
| In | Indium (element) |
| IN | intranasal |
| in d. | daily |
| in utero | within the uterus |
| incompat | incompatible |
| incompl | incomplete |
| incr | increase |
| ind | independent |
| IND | investigational new drug |
| indic | indicate, indication |
| INF | interferon |
| inf | inferior; infant |
| InFeD | iron dextran |
| inflam | inflammation |
| Info | information |
| ing | inguinal |
| inh | inhalation |
| INH | Isoniazid |
| inhal | inhalation |
| inhib | inhibit, inhibitor |
| inj | injection; injury |
| INPT | inpatient |
| INR | international normalized ratio |
| insp | inspiration |
| inst | instruction, instructed; instrument; institution |
| insuff | insufficient |
| int | intermittent; internal |
| inv | inversion |
| IOC | intraoperative cholangiogram |
| IOI | intraosseous infusion |
| IOL | intraocular lens |
| IOM | Institute of Medicine |
| IOP | intraocular pressure; intensive outpatient program |
| 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 |
| 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 |
| IPV | inactivated poliovirus (vaccine); intrapulmonary percussive ventilation |
| IQ | intelligence quotient |
| IR | interventional radiology; internal rotation; infrared |
| Ir | Iridium (element) |
| IRB | institutional review board; investigational review board |
| IRDS | infant respiratory distress 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 |
| IT | immunotherapy; information technology; intrathecal |
| ITB | iliotibial band |
| ITP | idiopathic/immune thrombocytopenia purpura |
| ITT | insulin tolerance test; intent to treat |
| 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 | 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 piggyback; intravenous pyelogram; intravenous push |
| IVPB | intravenous piggyback |
| IVR | idioventricular rhythm; interventional radiology |
| IVRA | intravenous regional anesthesia |
| IVSS | intravenous soluset |
| IVU | intravenous urography |
| 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.