CPC Practice Exam

Medical Terminology: Abbreviations H-J

Medical abbreviations that begin with H-J are listed here. Remember that capitalization and punctuation can alter meaning with these abbreviations - h may not necessarily be synonomous with H.

Medical Abbreviations
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  • Abbreviation: h
    Meaning: hour or hours
  • Abbreviation: H
    Meaning: histamine or its receptors (if with subscripts); hemagglutinin
  • Abbreviation: Hx
    Meaning: history
  • Abbreviation: HA
    Meaning: hypertonia arterialis; headache; calcium hydroxyapatite
  • Abbreviation: H/A
    Meaning: headache
  • Abbreviation: HAA
    Meaning: hepatitis-associated antigen or #History As Above
  • Abbreviation: HAART
    Meaning: highly active antiretroviral therapy
  • Abbreviation: HACE
    Meaning: high-altitude cerebral edema
  • Abbreviation: HACEK
    Meaning: acronym for a group of bacteria that are a frequent cause of endocarditis in children
  • Abbreviation: HAE
    Meaning: hereditary angioedema
  • Abbreviation: HAD
    Meaning: HIV-associated dementia
  • Abbreviation: H/A
    Meaning: headache
  • Abbreviation: HALE
    Meaning: health-adjusted life expectancy
  • Abbreviation: HAPE
    Meaning: high-altitude pulmonary edema
  • Abbreviation: HAV
    Meaning: hepatitis A virus
  • Abbreviation: Hb
    Meaning: hemoglobin
  • Abbreviation: HB
    Meaning: heart block
  • Abbreviation: Hb%
    Meaning: hemoglobin concentration in gram per deciliter
  • Abbreviation: HbA
    Meaning: hemoglobin A (commonest type of hemoglobin)
  • Abbreviation: HbA1c
    Meaning: glycosylated hemoglobin (used as a measure of diabetes control)
  • Abbreviation: HBD
    Meaning: has been drinking
  • Abbreviation: HbF
    Meaning: fetal hemoglobin
  • Abbreviation: HBO
    Meaning: hyperbaric oxygen
  • Abbreviation: HBP
    Meaning: high blood pressure, that is, hypertension
  • Abbreviation: HbsAg
    Meaning: hepatitis B surface antigen
  • Abbreviation: HBV
    Meaning: hepatitis B virus
  • Abbreviation: HC
    Meaning: head circumference; hemorrhagic colitis; homocysteine
  • Abbreviation: HCC
    Meaning: hepatocellular carcinoma
  • Abbreviation: hCG
    Meaning: human chorionic gonadotropin
  • Abbreviation: HCL
    Meaning: hairy cell leukemia
  • Abbreviation: HCM
    Meaning: hypertrophic cardiomyopathy
  • Abbreviation: Hct
    Meaning: hematocrit
  • Abbreviation: HCT
    Meaning: hematocrit; hematopoietic cell transplantation
  • Abbreviation: HCRP
    Meaning: Hospital Cornea Retrieval Programme
  • Abbreviation: HCTZ
    Meaning: hydrochlorothiazide
  • Abbreviation: HD
    Meaning: Hodgkin disease; Hemodialysis; Huntington's disease
  • Abbreviation: HCV
    Meaning: hepatitis C virus
  • Abbreviation: HDL
    Meaning: high-density lipoprotein
  • Abbreviation: HDL-C
    Meaning: high-density lipoprotein-cholesterol
  • Abbreviation: HDN
    Meaning: hemolytic disease of the newborn
  • Abbreviation: HDU
    Meaning: high dependency unit
  • Abbreviation: HDV
    Meaning: hepatitis D virus
  • Abbreviation: H&E
    Meaning: hematoxylin and eosin, a standard tissue stain
  • Abbreviation: HEENT
    Meaning: head, eyes, ears, nose, throat
  • Abbreviation: HELP; HELLP
    Meaning: hypertension, elevated liver enzymes, low platelets (syndrome) (in pregnancy)
  • Abbreviation: HEMA
    Meaning: hydroxy ethyl methacrylate, a material in soft contact lenses
  • Abbreviation: Hema
    Meaning: hematest - e.g. hema (-) - fecal occult blood
  • Abbreviation: HES
    Meaning: hydroxyethyl starch
  • Abbreviation: HETE
    Meaning: hydroxyeicosatetraenoic acid
  • Abbreviation: HEV
    Meaning: hepatitis E virus
  • Abbreviation: HF
    Meaning: heart failure
  • Abbreviation: HFM
    Meaning: hand, foot and mouth disease
  • Abbreviation: HFMD
    Meaning: hand, foot and mouth disease
  • Abbreviation: HFRS
    Meaning: hemorrhagic fever with renal syndrome
  • Abbreviation: HGB
    Meaning: hemoglobin
  • Abbreviation: HGSIL
    Meaning: high-grade squamous intraepithelial lesion
  • Abbreviation: HGV
    Meaning: hepatitis G virus
  • Abbreviation: HGPRTase
    Meaning: hypoxanthine-guanine phosphoribosyl transferase
  • Abbreviation: HH
    Meaning: hiatus hernia
  • Abbreviation: H&H
    Meaning: hemoglobin and hematocrit
  • Abbreviation: HHT
    Meaning: hereditary hemorrhagic telangiectisia
  • Abbreviation: HHV
    Meaning: human herpesvirus (including numerous subtypes such as HHV8)
  • Abbreviation: HI
    Meaning: homicidal ideation
  • Abbreviation: Hib
    Meaning: haemophilus influenzae B
  • Abbreviation: HIDS
    Meaning: hyper-IgD (and periodic fever) syndrome
  • Abbreviation: HIT
    Meaning: heparin-induced thrombocytopenia
  • Abbreviation: HIV
    Meaning: human immunodeficiency virus
  • Abbreviation: HL
    Meaning: hepatic lipase; Hodgkin's lymphoma; hearing level
  • Abbreviation: HLA
    Meaning: human leukocyte antigen
  • Abbreviation: HLD
    Meaning: Hyperlipidemia
  • Abbreviation: HLHS
    Meaning: hypoplastic left heart syndrome
  • Abbreviation: H&M
    Meaning: hematemesis and melena
  • Abbreviation: HMD
    Meaning: hyaline membrane disease
  • Abbreviation: HMG
    Meaning: human menopausal gonadotropin
  • Abbreviation: HMG-CoA
    Meaning: 3-hydroxy-3-methyl-glutaryl-CoA
  • Abbreviation: HMGR
    Meaning: 3-hydroxy-3-methyl-glutaryl-CoA reductase
  • Abbreviation: H-mole
    Meaning: hydatidiform mole
  • Abbreviation: HMS
    Meaning: hyperreactive malarial splenomegaly
  • Abbreviation: HMSN
    Meaning: hereditary motor sensory neuropathy
  • Abbreviation: HN
    Meaning: hemagglutinin-neuraminidase
  • Abbreviation: HND
    Meaning: hemolytic disease of the newborn
  • Abbreviation: HNPCC
    Meaning: hereditary nonpolyposis colorectal cancer
  • Abbreviation: H/O
    Meaning: history of ...
  • Abbreviation: HOB
    Meaning: head of bed (usually followed by number of degrees of elevation, e.g., HOB 10°)
  • Abbreviation: HOCM
    Meaning: hypertrophic obstructive cardiomyopathy
  • Abbreviation: HONK
    Meaning: hyperosmolar nonketotic coma
  • Abbreviation: HoTN
    Meaning: Hypotension
  • Abbreviation: H&P
    Meaning: history and physical examination (which very often are considered as a pair)
  • Abbreviation: HPA
    Meaning: hypothalamic-pituitary-adrenal axis
  • Abbreviation: HPETE
    Meaning: hydroxyeicosatetraenoic acid
  • Abbreviation: HPF
    Meaning: high-power field (microscopy)
  • Abbreviation: HPI; H/oPI
    Meaning: history of the present illness
  • Abbreviation: HPOA
    Meaning: hypertrophic pulmonary osteoarthropathy (clubbing)
  • Abbreviation: hPL
    Meaning: human placental lactogen (same as human chorionic somatomammotropin)
  • Abbreviation: HPS
    Meaning: hantavirus pulmonary syndrome
  • Abbreviation: HPV
    Meaning: human papillomavirus
  • Abbreviation: HR
    Meaning: heart rate
  • Abbreviation: hr
    Meaning: hour or hours
  • Abbreviation: HRCT
    Meaning: High-resolution computed tomography
  • Abbreviation: HRT
    Meaning: hormone replacement therapy
  • Abbreviation: h.s.
    Meaning: at bedtime (from Latin hora somni)
  • Abbreviation: hs
    Meaning: hours of sleep
  • Abbreviation: H→S
    Meaning: heel-to-shin test
  • Abbreviation: HSC
    Meaning: human chorionic somatomammotropin (same as human placental lactogen)
  • Abbreviation: HSG
    Meaning: hysterosalpingogram
  • Abbreviation: HSIL
    Meaning: high-grade squamous intraepithelial lesion
  • Abbreviation: HSP
    Meaning: Henoch-Schönlein purpura
  • Abbreviation: HSV
    Meaning: herpes simplex virus
  • Abbreviation: HT
    Meaning: hypertension
  • Abbreviation: Ht
    Meaning: height
  • Abbreviation: HTLV
    Meaning: human T-lymphotropic virus
  • Abbreviation: HTN
    Meaning: hypertension
  • Abbreviation: HTPA
    Meaning: hypothalamic-pituitary-adrenal axis
  • Abbreviation: HTVD
    Meaning: hypertensive vascular disease
  • Abbreviation: HUS
    Meaning: hemolytic uremic syndrome
  • Abbreviation: HVA
    Meaning: homovanillic acid
  • Abbreviation: HVLT
    Meaning: high-velocity lead therapy (facetious term for gunshot wound)
  • Abbreviation: Hx
    Meaning: history (of)


  • Abbreviation: 131I or I131
    Meaning: iodine-131 (aka radioactive iodine or radioiodine)
  • Abbreviation: IA
    Meaning: intra-arterial
  • Abbreviation: IAA
    Meaning: insulin autoantibody
  • Abbreviation: IABP
    Meaning: intra-aortic balloon pump
  • Abbreviation: IAI
    Meaning: intra-amniotic infection
  • Abbreviation: IBC
    Meaning: inflammatory breast cancer
  • Abbreviation: IBD
    Meaning: inflammatory bowel disease
  • Abbreviation: IBS
    Meaning: irritable bowel syndrome
  • Abbreviation: IC
    Meaning: ileocecal; immunocompromised; informed consent; intensive care; interstitial cystitis; immune complex; intracardiac
  • Abbreviation: ICD
    Meaning: implantable cardioverter-defibrillator
  • Abbreviation: ICDS
    Meaning: Integrated Child Development Services Program
  • Abbreviation: ICD-10
    Meaning: International Classification of Diseases, 10th Revision
  • Abbreviation: ICF
    Meaning: intracellular fluid
  • Abbreviation: ICG
    Meaning: impedance cardiography
  • Abbreviation: ICH
    Meaning: intracerebral hemorrhage
  • Abbreviation: ICM
    Meaning: ischemic cardiomyopathy
  • Abbreviation: ICP
    Meaning: intracranial pressure
  • Abbreviation: ICS
    Meaning: intercostal space; inhaled corticosteroids
  • Abbreviation: ICSI
    Meaning: intracytoplasmic sperm injection
  • Abbreviation: ICU
    Meaning: intensive care unit
  • Abbreviation: ICCU
    Meaning: intensive cardiac care unit
  • Abbreviation: ID
    Meaning: infectious disease; identifying data
  • Abbreviation: I&D
    Meaning: incision and drainage (how to treat an abscess)
  • Abbreviation: IDA
    Meaning: iron deficiency anemia
  • Abbreviation: IDC
    Meaning: idiopathic dilated cardiomyopathy; indwelling catheter; infiltrating ductal carcinoma
  • Abbreviation: IDDM
    Meaning: insulin-dependent diabetes mellitus (now called diabetes mellitus type 1)
  • Abbreviation: IDL
    Meaning: intermediate-density lipoprotein
  • Abbreviation: IDP
    Meaning: infectious disease precautions
  • Abbreviation: IE
    Meaning: infective endocarditis
  • Abbreviation: IF
    Meaning: immunofluorescence
  • Abbreviation: IFG
    Meaning: impaired fasting glycaemia
  • Abbreviation: Ig
    Meaning: immunoglobulin
  • Abbreviation: IgA
    Meaning: immunoglobulin A
  • Abbreviation: IgD
    Meaning: immunoglobulin D
  • Abbreviation: IgE
    Meaning: immunoglobulin E
  • Abbreviation: IgG
    Meaning: immunoglobulin G
  • Abbreviation: IgM
    Meaning: immunoglobulin M
  • Abbreviation: IGT
    Meaning: impaired glucose tolerance
  • Abbreviation: IHC
    Meaning: immunohistochemistry
  • Abbreviation: IHD
    Meaning: ischaemic heart disease
  • Abbreviation: IHSS
    Meaning: ideopathic hypertrophic subaortic stenosis (hypertrophic cardiomyopathy)
  • Abbreviation: ILD
    Meaning: interstitial lung disease
  • Abbreviation: IM
    Meaning: intramuscular
  • Abbreviation: IMA
    Meaning: inferior mesenteric artery
  • Abbreviation: IMB
    Meaning: intermenstrual bleed (bleeding between periods)
  • Abbreviation: IMI
    Meaning: intramuscular injection
  • Abbreviation: IMM
    Meaning: intramyometrial
  • Abbreviation: IMN
    Meaning: infectious mononucleosis
  • Abbreviation: IMT
    Meaning: intima-media thickness
  • Abbreviation: IMV
    Meaning: intermittent mandatory ventilation (see mechanical ventilation)
  • Abbreviation: Inc
    Meaning: incomplete
  • Abbreviation: INF(-α/-β/-γ)
    Meaning: interferons -α/-β/-γ
  • Abbreviation: INH
    Meaning: isoniazid
  • Abbreviation: Inj
    Meaning: injection
  • Abbreviation: INR
    Meaning: international normalized ratio
  • Abbreviation: Int
    Meaning: internal
  • Abbreviation: INT
    Meaning: intermittent needle therapy
  • Abbreviation: IO
    Meaning: intraosseous infusion
  • Abbreviation: I&O
    Meaning: inputs and outputs; intake and outputs
  • Abbreviation: IODM
    Meaning: infant of diabetic mother
  • Abbreviation: IOL
    Meaning: induction of labor; intraocular lens
  • Abbreviation: IOP
    Meaning: intraocular pressure
  • Abbreviation: IP
    Meaning: interphalangeal joint
  • Abbreviation: IPF
    Meaning: idiopathic pulmonary fibrosis
  • Abbreviation: IPS
    Meaning: intraperitoneal sounds
  • Abbreviation: IPPB
    Meaning: intermittent positive pressure breathing (see mechanical ventilation)
  • Abbreviation: IPH
    Meaning: intraparenchymal hemorrhage or intraperitoneal hemorrhage or idiopathic pulmonary hemosiderosis
  • Abbreviation: IPPV
    Meaning: intermittent positive pressure ventilation (see mechanical ventilation)
  • Abbreviation: IQ
    Meaning: intelligence quotient
  • Abbreviation: IR
    Meaning: insulin resistance
  • Abbreviation: IRDS
    Meaning: infant respiratory distress syndrome
  • Abbreviation: IRIDA
    Meaning: inherited iron-refractory iron deficiency anemia
  • Abbreviation: IS
    Meaning: Incentive Spirometry
  • Abbreviation: ISA
    Meaning: intrinsic sympathomimetic activity
  • Abbreviation: ISDN
    Meaning: isosorbide dinitrate
  • Abbreviation: ISH
    Meaning: isolated systolic hypertension
  • Abbreviation: ISMN
    Meaning: isosorbide mononitrate
  • Abbreviation: ISQ
    Meaning: no change (from Latin, in status quo)
  • Abbreviation: IT
    Meaning: intrathecal
  • Abbreviation: ITP
    Meaning: idiopathic thrombocytopenic purpura; immune-mediated thrombocytopenic purpura
  • Abbreviation: ITU
    Meaning: intensive treatment unit (or intensive therapy unit)
  • Abbreviation: IUCD
    Meaning: intrauterine contraceptive device
  • Abbreviation: IU
    Meaning: international units
  • Abbreviation: IUD
    Meaning: intrauterine death—sometimes confused with intrauterine contraceptive device—use FDIU or IUFD instead.; intrauterine device—sometimes confused with intrauterine death—use IUCD instead (intrauterine contraceptive device)
  • Abbreviation: IUFD
    Meaning: intrauterine foetal demise
  • Abbreviation: IUGR
    Meaning: intrauterine growth restriction
  • Abbreviation: IUI
    Meaning: intrauterine insemination
  • Abbreviation: IUP
    Meaning: intrauterine pregnancy
  • Abbreviation: IUPC
    Meaning: intrauterine pressure catheter
  • Abbreviation: IUS
    Meaning: intrauterine system
  • Abbreviation: IUT
    Meaning: intrauterine transfusion
  • Abbreviation: IV
    Meaning: intravenous
  • Abbreviation: IVC
    Meaning: inferior vena cava
  • Abbreviation: IV-DSA
    Meaning: intravenous digital subtraction angiography
  • Abbreviation: IVDU
    Meaning: intravenous drug user
  • Abbreviation: IVF
    Meaning: in vitro fertilization; intravenous fluids
  • Abbreviation: IVH
    Meaning: interventricular hemorrhage
  • Abbreviation: IVP
    Meaning: intravenous pyelogram
  • Abbreviation: IVPB
    Meaning: intravenous piggyback (i.v. short-term infusion)
  • Abbreviation: IVU
    Meaning: intravenous urogram
  • Abbreviation: IVUS
    Meaning: intravascular ultrasound
  • Abbreviation: Ix
    Meaning: Investigation(s)


  • Abbreviation: JCV
    Meaning: JC virus (named after the initials of an anonymous patient)
  • Abbreviation: JEV
    Meaning: Japanese encephalitis virus
  • Abbreviation: JIA
    Meaning: juvenile idiopathic arthritis
  • Abbreviation: JMS
    Meaning: junior medical student, aka MS-3
  • Abbreviation: JODM
    Meaning: juvenile-onset diabetes mellitus
  • Abbreviation: JRA
    Meaning: juvenile rheumatoid arthritis (now called juvenile idiopathic arthritis)
  • Abbreviation: JVD
    Meaning: jugular vein distension
  • Abbreviation: JVP
    Meaning: jugular venous pressure

Medical Abbreviations
0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Medical Coding

Medical coding is dependent upon a solid understanding of medical terminology.

To be successful and accurate medical coders must have a solid understanding of common medical terms for various reasons which include:

  • Reading and understanding medical dictation
  • Proper code look up and selection
  • Communicating with physicians, insurance companies, and other medical professionals
  • Understanding human anatomy
  • Appealing claim denials


Medical abbreviations are used all the time in hospitals, clinics and various health institutions.

Many of these abbreviations are well-known and in use outside medical settings, but different institutions can develop internal abbreviations that aren't generally recognized.

Medical abbreviations are used to save time when diagnosing and writing charts. We've tried to put together an exhaustive list of the ones that are in general use.

Consider Context

If you encounter an abbreviation that could have two or more conflicting meanings, always consider the context.

This may seem obvious, but if you see the abbreviation HL it is usually apparent whether the physician referred to Hodgkin's lymphoma or the patient's hearing level.

Abbreviation Example


The medical abbreviation A1C means glycosylated hemoglobin, or hemoglobin A1c.

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