ICD-10-CM
- Ibacitabine
- Ibopamine
- Ibufenac
- Ibuprofen
- Ibuproxam
- Ibuterol
- Ichthammol
- Ichthyol
- Idarubicin
- Idrocilamide
- Ifenprodil
- Ifosfamide
- Iletin
- Ilex
- Illuminating gas (after combustion)
- Ilopan
- Iloprost
- Ilotycin
- Imidazole-4-carboxamide
- Iminostilbene
- Imipenem
- Imipramine
- Immuglobin
- Immune
- Immunoglobin human (intravenous) (normal)
- Immunostimulant drug
- Immunosuppressive drug
- Immu-tetanus
- Indalpine
- Indanazoline
- Indandione (derivatives)
- Indapamide
- Indendione (derivatives)
- Indenolol
- Inderal
- Indian
- Indigo carmine
- Indobufen
- Indocin
- Indocyanine green
- Indometacin
- Indomethacin
- Indoramin
- Industrial
- Influenza vaccine
- Ingested substance NEC
- INH
- Inhalation, gas (noxious)
- Inhibitor
- Ink
- Inorganic substance NEC
- Inosine pranobex
- Inositol
- Inproquone
- Insect (sting), venomous
- Insecticide NEC
- Insular tissue extract
- Insulin (amorphous) (globin) (isophane) (Lente) (NPH) (Semilente) (Ultralente)
- Interferon (alpha) (beta) (gamma)
- Intestinal motility control drug
- Intranarcon
- Intravenous
- Inulin
- Invert sugar
- Inza
- Iobenzamic acid
- Iocarmic acid
- Iocetamic acid
- Iodamide
- Iodide NEC
- Iodinated
- Iodine (antiseptic, external) (tincture) NEC
- Iodipamide
- Iodized (poppy seed) oil
- Iodobismitol
- Iodochlorhydroxyquin
- Iodochlorhydroxyquinoline
- Iodocholesterol (131I)
- Iodoform
- Iodohippuric acid
- Iodopanoic acid
- Iodophthalein (sodium)
- Iodopyracet
- Iodoquinol
- Iodoxamic acid
- Iofendylate
- Ioglycamic acid
- Iohexol
- Ion exchange resin
- Iopamidol
- Iopanoic acid
- Iophenoic acid
- Iopodate, sodium
- Iopodic acid
- Iopromide
- Iopydol
- Iotalamic acid
- Iothalamate
- Iothiouracil
- Iotrol
- Iotrolan
- Iotroxate
- Iotroxic acid
- Ioversol
- Ioxaglate
- Ioxaglic acid
- Ioxitalamic acid
- Ipecac
- Ipecacuanha
- Ipodate, calcium
- Ipral
- Ipratropium (bromide)
- Ipriflavone
- Iprindole
- Iproclozide
- Iprofenin
- Iproheptine
- Iproniazid
- Iproplatin
- Iproveratril
- Iron (compounds) (medicinal) NEC
- Irrigating fluid (vaginal)
- Isepamicin
- Isoaminile (citrate)
- Isoamyl nitrite
- Isobenzan
- Isobutyl acetate
- Isocarboxazid
- Isoconazole
- Isocyanate
- Isoephedrine
- Isoetarine
- Isoethadione
- Isoetharine
- Isoflurane
- Isoflurophate
- Isomaltose, ferric complex
- Isometheptene
- Isoniazid
- Isonicotinic acid hydrazide
- Isonipecaine
- Isopentaquine
- Isophane insulin
- Isophorone
- Isophosphamide
- Isopregnenone
- Isoprenaline
- Isopromethazine
- Isopropamide
- Isopropanol
- Isopropyl
- Isopropylaminophenazone
- Isoproterenol
- Isosorbide dinitrate
- Isothipendyl
- Isotretinoin
- Isoxazolyl penicillin
- Isoxicam
- Isoxsuprine
- Ispagula
- Isradipine
- I-thyroxine sodium
- Itraconazole
- Itramin tosilate
- Ivermectin
- Izoniazid