| Substance | Poisoning | Accident | Therapeutic Use | Suicide Attempt | Assault | Undetermined |
| Hair treatment agent NEC | 976.4 | E858.7 | E946.4 | E950.4 | E962.0 | E980.4 |
| Halcinonide | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Halethazole | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Hallucinogens | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Haloperidol | 969.2 | E853.1 | E939.2 | E950.3 | E962.0 | E980.3 |
| Haloprogin | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Halotex | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Halothane | 968.1 | E855.1 | E938.1 | E950.4 | E962.0 | E980.4 |
| Halquinols | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Hand sanitizer | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Harmonyl | 972.6 | E858.3 | E942.6 | E950.4 | E962.0 | E980.4 |
| Hartmann's solution | 974.5 | E858.5 | E944.5 | E950.4 | E962.0 | E980.4 |
| Hashish | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Hawaiian wood rose seeds | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
Headache cures, drugs, powders NEC | 977.9 | E858.9 | E947.9 | E950.5 | E962.0 | E980.9 |
| Heavenly Blue (morning glory) | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Heavy metal |
| antagonists | 963.8 | E858.1 | E933.8 | E950.4 | E962.0 | E980.4 |
| anti-infectives | 961.2 | E857 | E931.2 | E950.4 | E962.0 | E980.4 |
| Hedaquinium | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Hedge hyssop | 988.2 | E865.4 | - | E950.9 | E962.1 | E980.9 |
| Heet | 976.8 | E858.7 | E946.8 | E950.4 | E962.0 | E980.4 |
| Helenin | 961.6 | E857 | E931.6 | E950.4 | E962.0 | E980.4 |
| Hellebore (black) (green) (white) | 988.2 | E865.4 | - | E950.9 | E962.1 | E980.9 |
| Hemlock | 988.2 | E865.4 | - | E950.9 | E962.1 | E980.9 |
| Hemostatics | 964.5 | E858.2 | E934.5 | E950.4 | E962.0 | E980.4 |
| capillary active drugs | 972.8 | E858.3 | E942.8 | E950.4 | E962.0 | E980.4 |
| Henbane | 988.2 | E865.4 | - | E950.9 | E962.1 | E980.9 |
| Heparin (sodium) | 964.2 | E858.2 | E934.2 | E950.4 | E962.0 | E980.4 |
| Heptabarbital, heptabarbitone | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Heptachlor | 989.2 | E863.0 | - | E950.6 | E962.1 | E980.7 |
| Heptalgin | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Herbicides | 989.4 | E863.5 | - | E950.6 | E962.1 | E980.7 |
| Heroin | 965.01 | E850.0 | E935.0 | E950.0 | E962.0 | E980.0 |
| Herplex | 976.5 | E858.7 | E946.5 | E950.4 | E962.0 | E980.4 |
| HES | 964.8 | E858.2 | E934.8 | E950.4 | E962.0 | E980.4 |
| Hetastarch | 964.8 | E858.2 | E934.8 | E950.4 | E962.0 | E980.4 |
| Hexachlorocyclohexane | 989.2 | E863.0 | - | E950.6 | E962.1 | E980.7 |
| Hexachlorophene | 976.2 | E858.7 | E946.2 | E950.4 | E962.0 | E980.4 |
| Hexadimethrine (bromide) | 964.5 | E858.2 | E934.5 | E950.4 | E962.0 | E980.4 |
| Hexanuorenium | 975.2 | E858.6 | E945.2 | E950.4 | E962.0 | E980.4 |
| Hexa-germ | 976.2 | E858.7 | E946.2 | E950.4 | E962.0 | E980.4 |
| Hexahydrophenol | 980.8 | E860.8 | - | E950.9 | E962.1 | E980.9 |
| Hexalin | 980.8 | E860.8 | - | E950.9 | E962.1 | E980.9 |
| Hexamethonium | 972.3 | E858.3 | E942.3 | E950.4 | E962.0 | E980.4 |
| Hexamethyleneamine | 961.9 | E857 | E931.9 | E950.4 | E962.0 | E980.4 |
| Hexamine | 961.9 | E857 | E931.9 | E950.4 | E962.0 | E980.4 |
| Hexanone | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| Hexapropymate | 967.8 | E852.8 | E937.8 | E950.2 | E962.0 | E980.2 |
| Hexestrol | 962.2 | E858.0 | E932.2 | E950.4 | E962.0 | E980.4 |
| Hexethal (sodium) | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Hexetidine | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Hexobarbital, hexobarbitone | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| sodium (anesthetic) | 968.3 | E855.1 | E938.3 | E950.4 | E962.0 | E980.4 |
| soluble | 968.3 | E855.1 | E938.3 | E950.4 | E962.0 | E980.4 |
| Hexocyclium | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Hexoestrol | 962.2 | E858.0 | E932.2 | E950.4 | E962.0 | E980.4 |
| Hexone | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| Hexylcaine | 968.5 | E855.2 | E938.5 | E950.4 | E962.0 | E980.4 |
| Hexylresorcinol | 961.6 | E857 | E931.6 | E950.4 | E962.0 | E980.4 |
| Hinkle's pills | 973.1 | E858.4 | E943.1 | E950.4 | E962.0 | E980.4 |
| Histalog | 977.8 | E858.8 | E947.8 | E950.4 | E962.0 | E980.4 |
| Histamine (phosphate) | 972.5 | E858.3 | E942.5 | E950.4 | E962.0 | E980.4 |
| Histoplasmin | 977.8 | E858.8 | E947.8 | E950.4 | E962.0 | E980.4 |
| Holly berries | 988.2 | E865.3 | - | E950.9 | E962.1 | E980.9 |
| Homatropine | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Homo-tet | 964.6 | E858.2 | E934.6 | E950.4 | E962.0 | E980.4 |
Hormones (synthetic substitute) NEC | 962.9 | E858.0 | E932.9 | E950.4 | E962.0 | E980.4 |
| adrenal cortical steroids | 962.0 | E858.0 | E932.0 | E950.4 | E962.0 | E980.4 |
| antidiabetic agents | 962.3 | E858.0 | E932.3 | E950.4 | E962.0 | E980.4 |
| follicle stimulating | 962.4 | E858.0 | E932.4 | E950.4 | E962.0 | E980.4 |
| gonadotropic | 962.4 | E858.0 | E932.4 | E950.4 | E962.0 | E980.4 |
| growth | 962.4 | E858.0 | E932.4 | E950.4 | E962.0 | E980.4 |
| ovarian (substitutes) | 962.2 | E858.0 | E932.2 | E950.4 | E962.0 | E980.4 |
| parathyroid (derivatives) | 962.6 | E858.0 | E932.6 | E950.4 | E962.0 | E980.4 |
| pituitary (posterior) | 962.5 | E858.0 | E932.5 | E950.4 | E962.0 | E980.4 |
| anterior | 962.4 | E858.0 | E932.4 | E950.4 | E962.0 | E980.4 |
| thyroid (derivative) | 962.7 | E858.0 | E932.7 | E950.4 | E962.0 | E980.4 |
| Hornet (sting) | 989.5 | E905.3 | - | E950.9 | E962.1 | E980.9 |
| Horticulture agent NEC | 989.4 | E863.9 | - | E950.6 | E962.1 | E980.7 |
| Hyaluronidase | 963.4 | E858.1 | E933.4 | E950.4 | E962.0 | E980.4 |
| Hyazyme | 963.4 | E858.1 | E933.4 | E950.4 | E962.0 | E980.4 |
| Hycodan | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Hydantoin derivatives | 966.1 | E855.0 | E936.1 | E950.4 | E962.0 | E980.4 |
| Hydeltra | 962.0 | E858.0 | E932.0 | E950.4 | E962.0 | E980.4 |
| Hydergine | 971.3 | E855.6 | E941.3 | E950.4 | E962.0 | E980.4 |
| Hydrabamine penicillin | 960.0 | E856 | E930.0 | E950.4 | E962.0 | E980.4 |
| Hydralazine, hydrallazine | 972.6 | E858.3 | E942.6 | E950.4 | E962.0 | E980.4 |
| Hydrargaphen | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Hydrazine | 983.9 | E864.3 | - | E950.7 | E962.1 | E980.6 |
| Hydriodic acid | 975.5 | E858.6 | E945.5 | E950.4 | E962.0 | E980.4 |
| Hydrocarbon gas | 987.1 | E869.8 | - | E952.8 | E962.2 | E982.8 |
incomplete combustion ofsee Carbon, monoxide, fuel, utility |
| liquefied (mobile container) | 987.0 | E868.0 | - | E951.1 | E962.2 | E981.1 |
| piped (natural) | 987.0 | E867 | - | E951.0 | E962.2 | E981.0 |
| Hydrochloric acid (liquid) | 983.1 | E864.1 | - | E950.7 | E962.1 | E980.6 |
| medicinal | 973.4 | E858.4 | E943.4 | E950.4 | E962.0 | E980.4 |
| vapor | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| Hydrochlorothiazide | 974.3 | E858.5 | E944.3 | E950.4 | E962.0 | E980.4 |
| Hydrocodone | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Hydrocortisone | 962.0 | E858.0 | E932.0 | E950.4 | E962.0 | E980.4 |
| ENT agent | 976.6 | E858.7 | E946.6 | E950.4 | E962.0 | E980.4 |
| ophthalmic preparation | 976.5 | E858.7 | E946.5 | E950.4 | E962.0 | E980.4 |
| topical NEC | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Hydrocortone | 962.0 | E858.0 | E932.0 | E950.4 | E962.0 | E980.4 |
| ENT agent | 976.6 | E858.7 | E946.6 | E950.4 | E962.0 | E980.4 |
| ophthalmic preparation | 976.5 | E858.7 | E946.5 | E950.4 | E962.0 | E980.4 |
| topical NEC | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Hydrocyanic acid see Cyanide(s) |
| Hydroflumethiazide | 974.3 | E858.5 | E944.3 | E950.4 | E962.0 | E980.4 |
| Hydrofluoric acid (liquid) | 983.1 | E864.1 | - | E950.7 | E962.1 | E980.6 |
| vapor | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| Hydrogen | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| arsenide | 985.1 | E866.3 | - | E950.8 | E962.1 | E980.8 |
| arseniureted | 985.1 | E866.3 | - | E950.8 | E962.1 | E980.8 |
| cyanide (salts) | 989.0 | E866.8 | - | E950.9 | E962.1 | E980.9 |
| gas | 987.7 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| fluoride (liquid) | 983.1 | E864.1 | - | E950.7 | E962.1 | E980.6 |
| vapor | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| peroxide (solution) | 976.6 | E858.7 | E946.6 | E950.4 | E962.0 | E980.4 |
| phosphureted | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| sulfide (gas) | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| arseniureted | 985.1 | E866.3 | - | E950.8 | E962.1 | E980.8 |
| sulfureted | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| Hydromorphinol | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Hydromorphinone | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Hydromorphone | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Hydromox | 974.3 | E858.5 | E944.3 | E950.4 | E962.0 | E980.4 |
| Hydrophilic lotion | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| Hydroquinone | 983.0 | E864.0 | - | E950.7 | E962.1 | E980.6 |
| vapor | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| Hydrosulfuric acid (gas) | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| Hydrous wool fat (lotion) | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| Hydroxide, caustic | 983.2 | E864.2 | - | E950.7 | E962.1 | E980.6 |
| Hydroxocobalamin | 964.1 | E858.2 | E934.1 | E950.4 | E962.0 | E980.4 |
| Hydroxyamphetamine | 971.2 | E858.5 | E941.2 | E950.4 | E962.0 | E980.4 |
| Hydroxychloroquine | 961.4 | E857 | E931.4 | E950.4 | E962.0 | E980.4 |
| Hydroxydihydrocodeinone | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Hydroxyethyl starch | 964.8 | E858.2 | E934.8 | E950.4 | E962.0 | E980.4 |
| Hydroxyphenamate | 969.5 | E853.8 | E939.5 | E950.3 | E962.0 | E980.3 |
| Hydroxyphenylbutazone | 965.5 | E850.5 | E935.5 | E950.0 | E962.0 | E980.0 |
| Hvdroxyprogesterone | 962.2 | E858.0 | E932.2 | E950.4 | E962.0 | E980.4 |
| Hydroxyquinoline derivatives | 961.3 | E857 | E931.3 | E950.4 | E962.0 | E980.4 |
| Hydroxystilbamidine | 961.5 | E857 | E931.5 | E950.4 | E962.0 | E980.4 |
| Hydroxyurea | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Hydroxyzine | 969.5 | E853.8 | E939.5 | E950.3 | E962.0 | E980.3 |
| Hyoscine (hydrobromide) | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Hyoscyamine | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Hyoscyamus (albus) (niger) | 988.2 | E865.4 | - | E950.9 | E962.1 | E980.9 |
| Hypaque | 977.8 | E858.8 | E947.8 | E950.4 | E962.0 | E980.4 |
| Hypertussis | 964.6 | E858.2 | E934.6 | E950.4 | E962.0 | E980.4 |
| Hypnotics NEC | 967.9 | E852.9 | E937.9 | E950.2 | E962.0 | E980.2 |
Hypochloritessee Sodium, hypochlorite |
| Hypotensive agents NEC | 972.6 | E858.3 | E942.6 | E950.4 | E962.0 | E980.4 |