| Substance | Poisoning | Accident | Therapeutic Use | Suicide Attempt | Assault | Undetermined |
| Mace | 987.5 | E869.3 | - | E952.8 | E962.2 | E982.8 |
| Macrolides (antibiotics) | 960.3 | E856 | E930.3 | E950.4 | E962.0 | E980.4 |
| Mafenide | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Magaldrate | 973.0 | E858.4 | E943.0 | E950.4 | E962.0 | E980.4 |
| Magic mushroom | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Magnamycin | 960.8 | E856 | E930.8 | E950.4 | E962.0 | E980.4 |
| Magnesia magma | 973.0 | E858.4 | E943.0 | E950.4 | E962.0 | E980.4 |
Magnesium (compounds) (fumes) NEC | 985.8 | E866.4 | - | E950.9 | E962.1 | E980.9 |
| antacid | 973.0 | E858.4 | E943.0 | E950.4 | E962.0 | E980.4 |
| carbonate | 973.0 | E858.4 | E943.0 | E950.4 | E962.0 | E980.4 |
| cathartic | 973.3 | E858.4 | E943.3 | E950.4 | E962.0 | E980.4 |
| citrate | 973.3 | E858.4 | E943.3 | E950.4 | E962.0 | E980.4 |
| hydroxide | 973.0 | E858.4 | E943.0 | E950.4 | E962.0 | E980.4 |
| oxide | 973.0 | E858.4 | E943.0 | E950.4 | E962.0 | E980.4 |
| sulfate (oral) | 973.3 | E858.4 | E943.3 | E950.4 | E962.0 | E980.4 |
| intravenous | 966.3 | E855.0 | E936.3 | E950.4 | E962.0 | E980.4 |
| trisilicate | 973.0 | E858.4 | E943.0 | E950.4 | E962.0 | E980.4 |
| Malathion (insecticide) | 989.3 | E863.1 | - | E950.6 | E962.1 | E980.7 |
| Male fern (oleoresin) | 961.6 | E857 | E931.6 | E950.4 | E962.0 | E980.4 |
| Mandelic acid | 961.9 | E857 | E931.9 | E950.4 | E962.0 | E980.4 |
Manganese compounds (fumes) NEC | 985.2 | E866.4 | - | E950.9 | E962.1 | E980.9 |
| Mannitol (diuretic) (medicinal) NEC | 974.4 | E858.5 | E944.4 | E950.4 | E962.0 | E980.4 |
| hexanitrate | 972.4 | E858.3 | E942.4 | E950.4 | E962.0 | E980.4 |
| mustard | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Mannomustine | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| MAO inhibitors | 969.0 | E854.0 | E939.0 | E950.3 | E962.0 | E980.3 |
| Mapharsen | 961.1 | E857 | E931.1 | E950.4 | E962.0 | E980.4 |
| Marcaine | 968.9 | E855.2 | E938.9 | E950.4 | E962.0 | E980.4 |
| infiltration (subcutaneous) | 968.5 | E855.2 | E938.5 | E950.4 | E962.0 | E980.4 |
| nerve block (peripheral) (plexus) | 968.6 | E855.2 | E938.6 | E950.4 | E962.0 | E980.4 |
| Marezine | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Marihuana, marijuana (derivatives) | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Marine animals or plants (sting) | 989.5 | E905.6 | - | E950.9 | E962.1 | E980.9 |
| Marplan | 969.0 | E854.0 | E939.0 | E950.3 | E962.0 | E980.3 |
| Marsh gas | 987.1 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| Marsilid | 969.0 | E854.0 | E939.0 | E950.3 | E962.0 | E980.3 |
| Matulane | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Mazindol | 977.0 | E858.8 | E947.0 | E950.4 | E962.0 | E980.4 |
| MDMA | 969.7 | E854.2 | E939.7 | E950.3 | E962.0 | E980.3 |
| Meadow saffron | 988.2 | E865.3 | - | E950.9 | E962.1 | E980.9 |
| Measles vaccine | 979.4 | E858.8 | E949.4 | E950.4 | E962.0 | E980.4 |
| Meat, noxious or nonbacterial | 988.8 | E865.0 | - | E950.9 | E962.1 | E980.9 |
| Mebanazine | 969.0 | E854.0 | E939.0 | E950.3 | E962.0 | E980.3 |
| Mebaral | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Mebendazole | 961.6 | E857 | E931.6 | E950.4 | E962.0 | E980.4 |
| Mebeverine | 975.1 | E858.6 | E945.1 | E950.4 | E962.0 | E980.4 |
| Mebhydroline | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Mebrophenhydramine | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Mebutamate | 969.5 | E853.8 | E939.5 | E950.3 | E962.0 | E980.3 |
| Mecamylamine (chloride) | 972.3 | E858.3 | E942.3 | E950.4 | E962.0 | E980.4 |
| Mechlorethamine hydrochloride | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Meclizene (hydrochloride) | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Meclofenoxate | 970.0 | E854.3 | E940.0 | E950.4 | E962.0 | E980.4 |
| Meclozine (hydrochloride) | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Medazepam | 969.4 | E853.2 | E939.4 | E950.3 | E962.0 | E980.3 |
| Medicine, medicinal substance | 977.9 | E858.9 | E947.9 | E950.5 | E962.0 | E980.5 |
| specified NEC | 977.8 | E858.8 | E947.8 | E950.4 | E962.0 | E980.4 |
| Medinal | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Medomin | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Medroxyprogesterone | 962.2 | E858.0 | E932.2 | E950.4 | E962.0 | E980.4 |
| Medrysone | 976.5 | E858.7 | E946.5 | E950.4 | E962.0 | E980.4 |
| Mefenamic acid | 965.7 | E850.7 | E935.7 | E950.0 | E962.0 | E980.0 |
| Megahallucinogen | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Megestrol | 962.2 | E858.0 | E932.2 | E950.4 | E962.0 | E980.4 |
| Meglumine | 977.8 | E858.8 | E947.8 | E950.4 | E962.0 | E980.4 |
| Meladinin | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| Melanizing agents | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| Melarsoprol | 961.1 | E857 | E931.1 | E950.4 | E962.0 | E980.4 |
| Melia azedarach | 988.2 | E865.3 | - | E950.9 | E962.1 | E980.9 |
| Mellaril | 969.1 | E853.0 | E939.1 | E950.3 | E962.0 | E980.3 |
| Meloxine | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| Melphalan | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Memantine hydrochloride | 969.8 | E854.8 | E939.8 | E950.3 | E962.0 | E980.3 |
| Menadiol sodium diphosphate | 964.3 | E858.2 | E934.3 | E950.4 | E962.0 | E980.4 |
| Menadione (sodium bisulfite) | 964.3 | E858.2 | E934.3 | E950.4 | E962.0 | E980.4 |
| Menaphthone | 964.3 | E858.2 | E934.3 | E950.4 | E962.0 | E980.4 |
| Meningococcal vaccine | 978.8 | E858.8 | E948.8 | E950.4 | E962.0 | E980.4 |
| Menningovax-C | 978.8 | E858.8 | E948.8 | E950.4 | E962.0 | E980.4 |
| Menotropins | 962.4 | E858.0 | E932.4 | E950.4 | E962.0 | E980.4 |
| Menthol NEC | 976.1 | E858.7 | E946.1 | E950.4 | E962.0 | E980.4 |
| Mepacrine | 961.3 | E857 | E931.3 | E950.4 | E962.0 | E980.4 |
| Meparfynol | 967.8 | E852.8 | E937.8 | E950.2 | E962.0 | E980.2 |
| Mepazine | 969.1 | E853.0 | E939.1 | E950.3 | E962.0 | E980.3 |
| Mepenzolate | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Meperidine | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Mephenamin(e) | 966.4 | E855.0 | E936.4 | E950.4 | E962.0 | E980.4 |
| Mephenesin (carbamate) | 968.0 | E855.1 | E938.0 | E950.4 | E962.0 | E980.4 |
| Mephenoxalone | 969.5 | E853.8 | E939.5 | E950.3 | E962.0 | E980.3 |
| Mephentermine | 971.2 | E855.5 | E941.2 | E950.4 | E962.0 | E980.4 |
| Mephenytoin | 966.1 | E855.0 | E936.1 | E950.4 | E962.0 | E980.4 |
| Mephobarbital | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Mepiperphenidol | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Mepivacaine | 968.9 | E855.2 | E938.9 | E950.4 | E962.0 | E980.4 |
| infiltration(subcutaneous) | 968.5 | E855.2 | E938.5 | E950.4 | E962.0 | E980.4 |
| nerve block (peripheral) (plexus) | 968.6 | E855.2 | E938.6 | E950.4 | E962.0 | E980.4 |
| topical (surface) | 968.5 | E855.2 | E938.5 | E950.4 | E962.0 | E980.4 |
| Meprednisone | 962.0 | E858.0 | E932.0 | E950.4 | E962.0 | E980.4 |
| Meprobam | 969.5 | E853.8 | E939.5 | E950.3 | E962.0 | E980.3 |
| Meprobamate | 969.5 | E853.8 | E939.5 | E950.3 | E962.0 | E980.3 |
| Mepyramine (maleate) | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Meralluride | 974.0 | E858.5 | E944.0 | E950.4 | E962.0 | E980.4 |
| Merbaphen | 974.0 | E858.5 | E944.0 | E950.4 | E962.0 | E980.4 |
| Merbromin | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Mercaplomerin | 974.0 | E858.5 | E944.0 | E950.4 | E962.0 | E980.4 |
| Mercaptopurine | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Mercumatilin | 974.0 | E858.5 | E944.0 | E950.4 | E962.0 | E980.4 |
| Mercuramide | 974.0 | E858.5 | E944.0 | E950.4 | E962.0 | E980.4 |
| Mercuranin | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Mercurochrome | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
Mercury, mercuric, mercurous (compounds) (cyanide) (fumes) (nonmedicinal) (vapor) NEC | 985.0 | E866.1 | - | E950.9 | E962.1 | E980.9 |
| ammoniated | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| anti-infective | 961.2 | E857 | E931.2 | E950.4 | E962.0 | E980.4 |
| topical | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| chloride (antiseptic) NEC | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| fungicide | 985.0 | E863.6 | - | E950.6 | E962.1 | E980.7 |
| diuretic compounds | 974.0 | E858.5 | E944.0 | E950.4 | E962.0 | E980.4 |
| fungicide | 985.0 | E863.6 | - | E950.6 | E962.1 | E980.7 |
| organic (fungicide) | 985.0 | E863.6 | - | E950.6 | E962.1 | E980.7 |
| Merethoxylline | 974.0 | E858.5 | E944.0 | E950.4 | E962.0 | E980.4 |
| Mersalyl | 974.0 | E858.5 | E944.0 | E950.4 | E962.0 | E980.4 |
| Merthiolate (topical) | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| ophthalmic preparation | 976.5 | E858.7 | E946.5 | E950.4 | E962.0 | E980.4 |
| Meruvax | 979.4 | E858.8 | E949.4 | E950.4 | E962.0 | E980.4 |
| Mescal buttons | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Mescaline (salts) | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Mesoridazine besylate | 969.1 | E853.0 | E939.1 | E950.3 | E962.0 | E980.3 |
| Mestanolone | 962.1 | E858.0 | E932.1 | E950.4 | E962.0 | E980.4 |
| Mestranol | 962.2 | E858.0 | E932.2 | E950.4 | E962.0 | E980.4 |
| Metactesylacetate | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Metaldehyde (snail killer) NEC | 989.4 | E863.4 | - | E950.6 | E962.1 | E980.7 |
| Metals (heavy) (nonmedicinal) NEC | 985.9 | E866.4 | - | E950.9 | E962.1 | E980.9 |
| dust, fumes, or vapor NEC | 985.9 | E866.4 | - | E950.9 | E962.1 | E980.9 |
| light NEC | 985.9 | E866.4 | - | E950.9 | E962.1 | E980.9 |
| dust, fumes, or vapor NEC | 985.9 | E866.4 | - | E950.9 | E962.1 | E980.9 |
| pesticides (dust) (vapor) | 985.9 | E863.4 | - | E950.6 | E962.1 | E980.7 |
| Metamucil | 973.3 | E858.4 | E943.3 | E950.4 | E962.0 | E980.4 |
| Metaphen | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Metaproterenol | 975.1 | E858.6 | E945.1 | E950.4 | E962.0 | E980.4 |
| Metaraminol | 972.8 | E858.3 | E942.8 | E950.4 | E962.0 | E980.4 |
| Metaxalone | 968.0 | E855.1 | E938.0 | E950.4 | E962.0 | E980.4 |
| Metformin | 962.3 | E858.0 | E932.3 | E950.4 | E962.0 | E980.4 |
| Methacycline | 960.4 | E856 | E930.4 | E950.4 | E962.0 | E980.4 |
| Methadone | 965.02 | E850.1 | E935.1 | E950.0 | E962.0 | E980.0 |
| Methallenestril | 962.2 | E858.0 | E932.2 | E950.4 | E962.0 | E980.4 |
| Methamphetamine | 969.7 | E854.2 | E939.7 | E950.3 | E962.0 | E980.3 |
| Methandienone | 962.1 | E858.0 | E932.1 | E950.4 | E962.0 | E980.4 |
| Methandriol | 962.1 | E858.0 | E932.1 | E950.4 | E962.0 | E980.4 |
| Methandrostenolone | 962.1 | E858.0 | E932.1 | E950.4 | E962.0 | E980.4 |
| Methane gas | 987.1 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| Methanol | 980.1 | E860.2 | - | E950.9 | E962.1 | E980.9 |
| vapor | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| Methantheline | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Methaphenilene | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Methapyrilene | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Methaqualone (compounds) | 967.4 | E852.3 | E937.4 | E950.2 | E962.0 | E980.2 |
| Metharbital, metharbitone | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Methazolamide | 974.2 | E858.5 | E944.2 | E950.4 | E962.0 | E980.4 |
| Methdilazine | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Methedrine | 969.7 | E854.2 | E939.7 | E950.3 | E962.0 | E980.3 |
| Methenamine (mandelate) | 961.9 | E857 | E931.9 | E950.4 | E962.0 | E980.4 |
| Methenolone | 962.1 | E858.0 | E932.1 | E950.4 | E962.0 | E980.4 |
| Methergine | 975.0 | E858.6 | E945.0 | E950.4 | E962.0 | E980.4 |
| Methiacil | 962.8 | E858.0 | E932.8 | E950.4 | E962.0 | E980.4 |
| Methicillin (sodium) | 960.0 | E856 | E930.0 | E950.4 | E962.0 | E980.4 |
| Methimazole | 962.8 | E858.0 | E932.8 | E950.4 | E962.0 | E980.4 |
| Methionine | 977.1 | E858.8 | E947.1 | E950.4 | E962.0 | E980.4 |
| Methisazone | 961.7 | E857 | E931.7 | E950.4 | E962.0 | E980.4 |
| Methitural | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Methixene | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Methobarbital, methobarbitone | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Methocarbamol | 968.0 | E855.1 | E938.0 | E950.4 | E962.0 | E980.4 |
Methohexital, methohexitone (sodium) | 968.3 | E855.1 | E938.3 | E950.4 | E962.0 | E980.4 |
| Methoin | 966.1 | E855.0 | E936.1 | E950.4 | E962.0 | E980.4 |
| Methopholine | 965.7 | E850.7 | E935.7 | E950.0 | E962.0 | E980.0 |
| Methorate | 975.4 | E858.6 | E945.4 | E950.4 | E962.0 | E980.4 |
| Methoserpidine | 972.6 | E858.3 | E942.6 | E950.4 | E962.0 | E980.4 |
| Methotrexate | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Methotrimeprazine | 967.8 | E852.8 | E937.8 | E950.2 | E962.0 | E980.2 |
| Methoxa-Dome | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| Methoxamine | 971.2 | E855.5 | E941.2 | E950.4 | E962.0 | E980.4 |
| Methoxsalen | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| Methoxybenzyl penicillin | 960.0 | E856 | E930.0 | E950.4 | E962.0 | E980.4 |
| Methoxychlor | 989.2 | E863.0 | - | E950.6 | E962.1 | E980.7 |
| Methoxyflurane | 968.2 | E855.1 | E938.2 | E950.4 | E962.0 | E980.4 |
| Methoxyphenamine | 971.2 | E855.5 | E941.2 | E950.4 | E962.0 | E980.4 |
| Methoxypromazine | 969.1 | E853.0 | E939.1 | E950.3 | E962.0 | E980.3 |
| Methoxypsoralen | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| Methscopolamine (bromide) | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Methsuximide | 966.2 | E855.0 | E936.2 | E950.4 | E962.0 | E980.4 |
| Methyclothiazide | 974.3 | E858.5 | E944.3 | E950.4 | E962.0 | E980.4 |
| Methyl |
| acetate | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| acetone II | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| alcohol | 980.1 | E860.2 | - | E950.9 | E962.1 | E980.9 |
| amphetamine | 969.7 | E854.2 | E939.7 | E950.3 | E962.0 | E980.3 |
| androstanolone | 962.1 | E858.0 | E932.1 | E950.4 | E962.0 | E980.4 |
| atropine | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| benzene | 982.0 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| bromide (gas) | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| fumigant | 987.8 | E863.8 | - | E950.6 | E962.2 | E980.7 |
| butanol | 980.8 | E860.8 | - | E950.9 | E962.1 | E980.9 |
| carbinol | 980.1 | E860.2 | - | E950.9 | E962.1 | E980.9 |
| cellosolve | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| cellulose | 973.3 | E858.4 | E943.3 | E950.4 | E962.0 | E980.4 |
| chloride (gas) | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| cyclohexane | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| cyclohexanone | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| dihydromorphinone | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| ergometrine | 975.0 | E858.6 | E945.0 | E950.4 | E962.0 | E980.4 |
| ergonovine | 975.0 | E858.6 | E945.0 | E950.4 | E962.0 | E980.4 |
| ethyl ketone | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| hydrazine | 983.9 | E864.3 | - | E950.7 | E962.1 | E980.6 |
| isobutyl ketone | 982.8 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| morphine NEC | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| parafynol | 967.8 | E852.8 | E937.8 | E950.2 | E962.0 | E980.2 |
| parathion | 989.3 | E863.1 | - | E950.6 | E962.1 | E980.7 |
| pentynol NEC | 967.8 | E852.8 | E937.8 | E950.2 | E962.0 | E980.2 |
| peridol | 969.2 | E853.1 | E939.2 | E950.3 | E962.0 | E980.3 |
| phenidate | 969.7 | E854.2 | E939.7 | E950.3 | E962.0 | E980.3 |
| prednisolone | 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 |
| 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 |
| propylcarbinol | 980.8 | E860.8 | - | E950.9 | E962.1 | E980.9 |
| rosaniline NEC | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| salicylate NEC | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| sulfate (fumes) | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| liquid | 983.9 | E864.3 | - | E950.7 | E962.1 | E980.6 |
| sulfonal | 967.8 | E852.8 | E937.8 | E950.2 | E962.0 | E980.2 |
| testosterone | 962.1 | E858.0 | E932.1 | E950.4 | E962.0 | E980.4 |
| thiouracil | 962.8 | E858.0 | E932.8 | E950.4 | E962.0 | E980.4 |
| Methylated spirit | 980.0 | E860.1 | - | E950.9 | E962.1 | E980.9 |
| Methyldopa | 972.6 | E858.3 | E942.6 | E950.4 | E962.0 | E980.4 |
| Methylene |
| blue | 961.9 | E857 | E931.9 | E950.4 | E962.0 | E980.4 |
chloride or dichloride (solvent) NEC | 982.3 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| Methylhexabital | 967.0 | E851 | E937.0 | E950.1 | E962.0 | E980.1 |
| Methylparaben (ophthalmic) | 976.5 | E858.7 | E946.5 | E950.4 | E962.0 | E980.4 |
| Methyprylon | 967.5 | E852.4 | E937.5 | E950.2 | E962.0 | E980.2 |
| Methysergide | 971.3 | E855.6 | E941.3 | E950.4 | E962.0 | E980.4 |
| Metoclopramide | 963.0 | E858.1 | E933.0 | E950.4 | E962.0 | E980.4 |
| Metofoline | 965.7 | E850.7 | E935.7 | E950.0 | E962.0 | E980.0 |
| Metopon | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Metronidazole | 961.5 | E857 | E931.5 | E950.4 | E962.0 | E980.4 |
| Metycaine | 968.9 | E855.2 | E938.9 | E950.4 | E962.0 | E980.4 |
| infiltration (subcutaneous) | 968.5 | E855.2 | E938.5 | E950.4 | E962.0 | E980.4 |
| nerve block (peripheral) (plexus) | 968.6 | E855.2 | E938.6 | E950.4 | E962.0 | E980.4 |
| topical (surface) | 968.5 | E855.2 | E938.5 | E950.4 | E962.0 | E980.4 |
| Metyrapone | 977.8 | E858.8 | E947.8 | E950.4 | E962.0 | E980.4 |
| Mevinphos | 989.3 | E863.1 | - | E950.6 | E962.1 | E980.7 |
| Mezereon (berries) | 988.2 | E865.3 | - | E950.9 | E962.1 | E980.9 |
| Micatin | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Miconazole | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Mifepristone | 962.9 | E858.0 | E932.9 | E950.4 | E962.0 | E980.4 |
| Midol | 965.1 | E850.3 | E935.3 | E950.0 | E962.0 | E980.0 |
| Milk of magnesia | 973.0 | E858.4 | E943.0 | E950.4 | E962.0 | E980.4 |
| Millipede (tropical) (venomous) | 989.5 | E905.4 | - | E950.9 | E962.1 | E980.9 |
| Miltown | 969.5 | E853.8 | E939.5 | E950.3 | E962.0 | E980.3 |
| Mineral |
| oil (medicinal) | 973.2 | E858.4 | E943.2 | E950.4 | E962.0 | E980.4 |
| nonmedicinal | 981 | E862.1 | - | E950.9 | E962.1 | E980.9 |
| topical | 976.3 | E858.7 | E946.3 | E950.4 | E962.0 | E980.4 |
| salts NEC | 974.6 | E858.5 | E944.6 | E950.4 | E962.0 | E980.4 |
| spirits | 981 | E862.0 | - | E950.9 | E962.1 | E980.9 |
| Minocycline | 960.4 | E856 | E930.4 | E950.4 | E962.0 | E980.4 |
| Mithramycin (antineoplastic) | 960.7 | E856 | E930.7 | E950.4 | E962.0 | E980.4 |
| Mitobronitol | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Mitomycin (antineoplastic) | 960.7 | E856 | E930.7 | E950.4 | E962.0 | E980.4 |
| Mitotane | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Moderil | 972.6 | E858.3 | E942.6 | E950.4 | E962.0 | E980.4 |
| Mogadon-see Nitrazepam |
| Molindone | 969.3 | E853.8 | E939.3 | E950.3 | E962.0 | E980.3 |
| Monistat | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Monkshood | 988.2 | E865.4 | - | E950.9 | E962.1 | E980.9 |
| Monoamine oxidase inhibitors | 969.0 | E854.0 | E939.0 | E950.3 | E962.0 | E980.3 |
| Monochlorobenzene | 982.0 | E862.4 | - | E950.9 | E962.1 | E980.9 |
| Monosodium glutamate | 989.89 | E866.8 | - | E950.9 | E962.1 | E980.9 |
Monoxide, carbon see Carbon, monoxide |
| Moperone | 969.2 | E853.1 | E939.2 | E950.3 | E962.0 | E980.3 |
| Morning glory seeds | 969.6 | E854.1 | E939.6 | E950.3 | E962.0 | E980.3 |
| Moroxydine (hydrochloride) | 961.7 | E857 | E931.7 | E950.4 | E962.0 | E980.4 |
| Morphazinamide | 961.8 | E857 | E931.8 | E950.4 | E962.0 | E980.4 |
| Morphinans | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Morphine NEC | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| antagonists | 970.1 | E854.3 | E940.1 | E950.4 | E962.0 | E980.4 |
| Morpholinylethylmorphine | 965.09 | E850.2 | E935.2 | E950.0 | E962.0 | E980.0 |
| Morrhuate sodium | 972.7 | E858.3 | E942.7 | E950.4 | E962.0 | E980.4 |
| Moth balls (see also Pesticides) | 989.4 | E863.4 | - | E950.6 | E962.1 | E980.7 |
| naphthalene | 983.0 | E863.4 | - | E950.7 | E962.1 | E980.6 |
Motor exhaust gas see Carbon, monoxide, exhaust gas |
| Mouth wash | 976.6 | E858.7 | E946.6 | E950.4 | E962.0 | E980.4 |
| Mucolytic agent | 975.5 | E858.6 | E945.5 | E950.4 | E962.0 | E980.4 |
| Mucomyst | 975.5 | E858.6 | E945.5 | E950.4 | E962.0 | E980.4 |
Mucous membrane agents (external) | 976.9 | E858.7 | E946.9 | E950.4 | E962.0 | E980.4 |
| specified NEC | 976.8 | E858.7 | E946.8 | E950.4 | E962.0 | E980.4 |
| Mumps |
| immune globulin (human) | 964.6 | E858.2 | E934.6 | E950.4 | E962.0 | E980.4 |
| skin test antigen | 977.8 | E858.8 | E947.8 | E950.4 | E962.0 | E980.4 |
| vaccine | 979.6 | E858.8 | E949.6 | E950.4 | E962.0 | E980.4 |
| Mumpsvax | 979.6 | E858.8 | E949.6 | E950.4 | E962.0 | E980.4 |
| Muriatic acidsee Hydrochloric acid |
| Muscarine | 971.0 | E855.3 | E941.0 | E950.4 | E962.0 | E980.4 |
| Muscle affecting agents NEC | 975.3 | E858.6 | E945.3 | E950.4 | E962.0 | E980.4 |
| oxytocic | 975.0 | E858.6 | E945.0 | E950.4 | E962.0 | E980.4 |
| relaxants | 975.3 | E858.6 | E945.3 | E950.4 | E962.0 | E980.4 |
| central nervous system | 968.0 | E855.1 | E938.0 | E950.4 | E962.0 | E980.4 |
| skeletal | 975.2 | E858.6 | E945.2 | E950.4 | E962.0 | E980.4 |
| smooth | 975.1 | E858.6 | E945.1 | E950.4 | E962.0 | E980.4 |
| Mushrooms, noxious | 988.1 | E865.5 | - | E950.9 | E962.1 | E980.9 |
| Mussel, noxious | 988.0 | E865.1 | - | E950.9 | E962.1 | E980.9 |
| Mustard (emetic) | 973.6 | E858.4 | E943.6 | E950.4 | E962.0 | E980.4 |
| gas | 987.8 | E869.8 | - | E952.8 | E962.2 | E982.8 |
| nitrogen | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Mustine | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| M-vac | 979.4 | E858.8 | E949.4 | E950.4 | E962.0 | E980.4 |
| Mycifradin | 960.8 | E856 | E930.8 | E950.4 | E962.0 | E980.4 |
| topical | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Mycitracin | 960.8 | E856 | E930.8 | E950.4 | E962.0 | E980.4 |
| ophthalmic preparation | 976.5 | E858.7 | E946.5 | E950.4 | E962.0 | E980.4 |
| Mycostatin | 960.1 | E856 | E930.1 | E950.4 | E962.0 | E980.4 |
| topical | 976.0 | E858.7 | E946.0 | E950.4 | E962.0 | E980.4 |
| Mydriacyl | 971.1 | E855.4 | E941.1 | E950.4 | E962.0 | E980.4 |
| Myelobromal | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Myleran | 963.1 | E858.1 | E933.1 | E950.4 | E962.0 | E980.4 |
| Myochrysin(e) | 965.69 | E850.6 | E935.6 | E950.0 | E962.0 | E980.0 |
| Myoneural blocking agents | 975.2 | E858.6 | E945.2 | E950.4 | E962.0 | E980.4 |
| Myristica fragrans | 988.2 | E865.3 | - | E950.9 | E962.1 | E980.9 |
| Myristicin | 988.2 | E865.3 | - | E950.9 | E962.1 | E980.9 |
| Mysoline | 966.3 | E855.0 | E936.3 | E950.4 | E962.0 | E980.4 |