Browse Medical Abbreviations

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