2025 ICD-10-CM Table of Drugs and Chemicals starting with letter N

Alphabetically Paginated Substances in the Table of Drugs and Chemicals

The 2025 Table of Drugs and Chemicals contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. Use as many codes as necessary to describe all reported drugs, medicinal or chemical substances. Browse Table of Drugs and Chemicals by alphabetical order:

Substance	Poisoning Accidental (unintentional)	Poisoning Accidental self-harm	Poisoning Assault	Poisoning Undetermined	Adverse effect	Underdosing
Nabilone	T40.711	T40.712	T40.713	T40.714	T40.715	T40.716
Nabumetone	T39.391	T39.392	T39.393	T39.394	T39.395	T39.396
Nadolol	T44.7X1	T44.7X2	T44.7X3	T44.7X4	T44.7X5	T44.7X6
Nafcillin	T36.0X1	T36.0X2	T36.0X3	T36.0X4	T36.0X5	T36.0X6
Nafoxidine	T38.6X1	T38.6X2	T38.6X3	T38.6X4	T38.6X5	T38.6X6
Naftazone	T46.991	T46.992	T46.993	T46.994	T46.995	T46.996
Naftidrofuryl (oxalate)	T46.7X1	T46.7X2	T46.7X3	T46.7X4	T46.7X5	T46.7X6
Naftifine	T49.0X1	T49.0X2	T49.0X3	T49.0X4	T49.0X5	T49.0X6
Nail polish remover	T52.91	T52.92	T52.93	T52.94
Nalbuphine	T40.491	T40.492	T40.493	T40.494	T40.495	T40.496
Naled	T60.0X1	T60.0X2	T60.0X3	T60.0X4
Nalidixic acid	T37.8X1	T37.8X2	T37.8X3	T37.8X4	T37.8X5	T37.8X6
Nalorphine	T50.7X1	T50.7X2	T50.7X3	T50.7X4	T50.7X5	T50.7X6
Naloxone	T50.7X1	T50.7X2	T50.7X3	T50.7X4	T50.7X5	T50.7X6
Naltrexone	T50.7X1	T50.7X2	T50.7X3	T50.7X4	T50.7X5	T50.7X6
Namenda	T43.8X1	T43.8X2	T43.8X3	T43.8X4	T43.8X5	T43.8X6
Nandrolone	T38.7X1	T38.7X2	T38.7X3	T38.7X4	T38.7X5	T38.7X6
Naphazoline	T48.5X1	T48.5X2	T48.5X3	T48.5X4	T48.5X5	T48.5X6
Naphtha (painters') (petroleum)	T52.0X1	T52.0X2	T52.0X3	T52.0X4
Naphtha (painters') (petroleum) »solvent	T52.0X1	T52.0X2	T52.0X3	T52.0X4
Naphtha (painters') (petroleum) »vapor	T52.0X1	T52.0X2	T52.0X3	T52.0X4
Naphthalene (non-chlorinated)	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Naphthalene (non-chlorinated) »chlorinated	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Naphthalene (non-chlorinated) »chlorinated »vapor	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Naphthalene (non-chlorinated) »insecticide or moth repellent	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Naphthalene (non-chlorinated) »insecticide or moth repellent »chlorinated	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Naphthalene (non-chlorinated) »vapor	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Naphthalene (non-chlorinated) »vapor »chlorinated	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Naphthol	T65.891	T65.892	T65.893	T65.894
Naphthylamine	T65.891	T65.892	T65.893	T65.894
Naphthylthiourea (ANTU)	T60.4X1	T60.4X2	T60.4X3	T60.4X4
Naproxen	T39.311	T39.312	T39.313	T39.314	T39.315	T39.316
Narcotic (drug)	T40.601	T40.602	T40.603	T40.604	T40.605	T40.606
Narcotic (drug) »analgesic NEC	T40.601	T40.602	T40.603	T40.604	T40.605	T40.606
Narcotic (drug) »antagonist	T40.601	T40.602	T40.603	T40.604	T40.605	T40.606
Narcotic (drug) »specified NEC	T40.601	T40.602	T40.603	T40.604	T40.605	T40.606
Narcotic (drug) »synthetic	T40.601	T40.602	T40.603	T40.604	T40.605	T40.606
Narcotine	T48.3X1	T48.3X2	T48.3X3	T48.3X4	T48.3X5	T48.3X6
Nardil	T43.1X1	T43.1X2	T43.1X3	T43.1X4	T43.1X5	T43.1X6
Nasal drug NEC	T49.6X1	T49.6X2	T49.6X3	T49.6X4	T49.6X5	T49.6X6
Natamycin	T49.0X1	T49.0X2	T49.0X3	T49.0X4	T49.0X5	T49.0X6
Natural	T45.8X1	T45.8X2	T45.8X3	T45.8X4	T45.8X5	T45.8X6
Natural »blood (product)	T45.8X1	T45.8X2	T45.8X3	T45.8X4	T45.8X5	T45.8X6
Natural »gas (piped)	T45.8X1	T45.8X2	T45.8X3	T45.8X4	T45.8X5	T45.8X6
Natural »gas (piped) »incomplete combustion	T45.8X1	T45.8X2	T45.8X3	T45.8X4	T45.8X5	T45.8X6
Nealbarbital	T42.3X1	T42.3X2	T42.3X3	T42.3X4	T42.3X5	T42.3X6
Nectadon	T48.3X1	T48.3X2	T48.3X3	T48.3X4	T48.3X5	T48.3X6
Nedocromil	T48.6X1	T48.6X2	T48.6X3	T48.6X4	T48.6X5	T48.6X6
Nefopam	T39.8X1	T39.8X2	T39.8X3	T39.8X4	T39.8X5	T39.8X6
Nematocyst (sting)	T63.691	T63.692	T63.693	T63.694
Nembutal	T42.3X1	T42.3X2	T42.3X3	T42.3X4	T42.3X5	T42.3X6
Nemonapride	T43.591	T43.592	T43.593	T43.594	T43.595	T43.596
Neoarsphenamine	T37.8X1	T37.8X2	T37.8X3	T37.8X4	T37.8X5	T37.8X6
Neocinchophen	T50.4X1	T50.4X2	T50.4X3	T50.4X4	T50.4X5	T50.4X6
Neomycin (derivatives)	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Neomycin (derivatives) »ENT agent	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Neomycin (derivatives) »ophthalmic preparation	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Neomycin (derivatives) »topical NEC	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Neomycin (derivatives) »with	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Neomycin (derivatives) »with »bacitracin	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Neomycin (derivatives) »with »neostigmine	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Neonal	T42.3X1	T42.3X2	T42.3X3	T42.3X4	T42.3X5	T42.3X6
Neoprontosil	T37.0X1	T37.0X2	T37.0X3	T37.0X4	T37.0X5	T37.0X6
Neosalvarsan	T37.8X1	T37.8X2	T37.8X3	T37.8X4	T37.8X5	T37.8X6
Neosilversalvarsan	T37.8X1	T37.8X2	T37.8X3	T37.8X4	T37.8X5	T37.8X6
Neosporin	T36.8X1	T36.8X2	T36.8X3	T36.8X4	T36.8X5	T36.8X6
Neosporin »ENT agent	T36.8X1	T36.8X2	T36.8X3	T36.8X4	T36.8X5	T36.8X6
Neosporin »opthalmic preparation	T36.8X1	T36.8X2	T36.8X3	T36.8X4	T36.8X5	T36.8X6
Neosporin »topical NEC	T36.8X1	T36.8X2	T36.8X3	T36.8X4	T36.8X5	T36.8X6
Neostigmine bromide	T44.0X1	T44.0X2	T44.0X3	T44.0X4	T44.0X5	T44.0X6
Neraval	T42.3X1	T42.3X2	T42.3X3	T42.3X4	T42.3X5	T42.3X6
Neravan	T42.3X1	T42.3X2	T42.3X3	T42.3X4	T42.3X5	T42.3X6
Nerium oleander	T62.2X1	T62.2X2	T62.2X3	T62.2X4
Nerve gas, not in war	T59.91	T59.92	T59.93	T59.94
Nesacaine	T41.3X1	T41.3X2	T41.3X3	T41.3X4	T41.3X5	T41.3X6
Nesacaine »infiltration (subcutaneous)	T41.3X1	T41.3X2	T41.3X3	T41.3X4	T41.3X5	T41.3X6
Nesacaine »nerve block (peripheral) (plexus)	T41.3X1	T41.3X2	T41.3X3	T41.3X4	T41.3X5	T41.3X6
Netilmicin	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Neurobarb	T42.3X1	T42.3X2	T42.3X3	T42.3X4	T42.3X5	T42.3X6
Neuroleptic drug NEC	T43.501	T43.502	T43.503	T43.504	T43.505	T43.506
Neuromuscular blocking drug	T48.1X1	T48.1X2	T48.1X3	T48.1X4	T48.1X5	T48.1X6
Neutral insulin injection	T38.3X1	T38.3X2	T38.3X3	T38.3X4	T38.3X5	T38.3X6
Neutral spirits	T51.0X1	T51.0X2	T51.0X3	T51.0X4
Neutral spirits »beverage	T51.0X1	T51.0X2	T51.0X3	T51.0X4
Niacin	T46.7X1	T46.7X2	T46.7X3	T46.7X4	T46.7X5	T46.7X6
Niacinamide	T45.2X1	T45.2X2	T45.2X3	T45.2X4	T45.2X5	T45.2X6
Nialamide	T43.1X1	T43.1X2	T43.1X3	T43.1X4	T43.1X5	T43.1X6
Niaprazine	T42.6X1	T42.6X2	T42.6X3	T42.6X4	T42.6X5	T42.6X6
Nicametate	T46.7X1	T46.7X2	T46.7X3	T46.7X4	T46.7X5	T46.7X6
Nicardipine	T46.1X1	T46.1X2	T46.1X3	T46.1X4	T46.1X5	T46.1X6
Nicergoline	T46.7X1	T46.7X2	T46.7X3	T46.7X4	T46.7X5	T46.7X6
Nickel (carbonyl) (tetra-carbonyl) (fumes) (vapor)	T56.891	T56.892	T56.893	T56.894
Nickelocene	T56.891	T56.892	T56.893	T56.894
Niclosamide	T37.4X1	T37.4X2	T37.4X3	T37.4X4	T37.4X5	T37.4X6
Nicofuranose	T46.7X1	T46.7X2	T46.7X3	T46.7X4	T46.7X5	T46.7X6
Nicomorphine	T40.2X1	T40.2X2	T40.2X3	T40.2X4
Nicorandil	T46.3X1	T46.3X2	T46.3X3	T46.3X4	T46.3X5	T46.3X6
Nicotiana (plant)	T62.2X1	T62.2X2	T62.2X3	T62.2X4
Nicotinamide	T45.2X1	T45.2X2	T45.2X3	T45.2X4	T45.2X5	T45.2X6
Nicotine (insecticide) (spray) (sulfate) NEC	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Nicotine (insecticide) (spray) (sulfate) NEC »from tobacco	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Nicotine (insecticide) (spray) (sulfate) NEC »from tobacco »cigarettes	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Nicotine (insecticide) (spray) (sulfate) NEC »not insecticide	T60.2X1	T60.2X2	T60.2X3	T60.2X4
Nicotinic acid	T46.7X1	T46.7X2	T46.7X3	T46.7X4	T46.7X5	T46.7X6
Nicotinyl alcohol	T46.7X1	T46.7X2	T46.7X3	T46.7X4	T46.7X5	T46.7X6
Nicoumalone	T45.511	T45.512	T45.513	T45.514	T45.515	T45.516
Nifedipine	T46.1X1	T46.1X2	T46.1X3	T46.1X4	T46.1X5	T46.1X6
Nifenazone	T39.2X1	T39.2X2	T39.2X3	T39.2X4	T39.2X5	T39.2X6
Nifuraldezone	T37.91	T37.92	T37.93	T37.94	T37.95	T37.96
Nifuratel	T37.8X1	T37.8X2	T37.8X3	T37.8X4	T37.8X5	T37.8X6
Nifurtimox	T37.3X1	T37.3X2	T37.3X3	T37.3X4	T37.3X5	T37.3X6
Nifurtoinol	T37.8X1	T37.8X2	T37.8X3	T37.8X4	T37.8X5	T37.8X6
Nightshade, deadly (solanum) [See Also: Belladonna]	T62.2X1	T62.2X2	T62.2X3	T62.2X4
Nightshade, deadly (solanum) [See Also: Belladonna] »berry	T62.2X1	T62.2X2	T62.2X3	T62.2X4
Nikethamide	T50.7X1	T50.7X2	T50.7X3	T50.7X4	T50.7X5	T50.7X6
Nilstat	T36.7X1	T36.7X2	T36.7X3	T36.7X4	T36.7X5	T36.7X6
Nilstat »topical	T36.7X1	T36.7X2	T36.7X3	T36.7X4	T36.7X5	T36.7X6
Nilutamide	T38.6X1	T38.6X2	T38.6X3	T38.6X4	T38.6X5	T38.6X6
Nimesulide	T39.391	T39.392	T39.393	T39.394	T39.395	T39.396
Nimetazepam	T42.4X1	T42.4X2	T42.4X3	T42.4X4	T42.4X5	T42.4X6
Nimodipine	T46.1X1	T46.1X2	T46.1X3	T46.1X4	T46.1X5	T46.1X6
Nimorazole	T37.3X1	T37.3X2	T37.3X3	T37.3X4	T37.3X5	T37.3X6
Nimustine	T45.1X1	T45.1X2	T45.1X3	T45.1X4	T45.1X5	T45.1X6
Niridazole	T37.4X1	T37.4X2	T37.4X3	T37.4X4	T37.4X5	T37.4X6
Nisentil	T40.2X1	T40.2X2	T40.2X3	T40.2X4	T40.2X5	T40.2X6
Nisoldipine	T46.1X1	T46.1X2	T46.1X3	T46.1X4	T46.1X5	T46.1X6
Nitramine	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitrate, organic	T46.3X1	T46.3X2	T46.3X3	T46.3X4	T46.3X5	T46.3X6
Nitrazepam	T42.4X1	T42.4X2	T42.4X3	T42.4X4	T42.4X5	T42.4X6
Nitrefazole	T50.6X1	T50.6X2	T50.6X3	T50.6X4	T50.6X5	T50.6X6
Nitrendipine	T46.1X1	T46.1X2	T46.1X3	T46.1X4	T46.1X5	T46.1X6
Nitric	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitric »acid (liquid)	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitric »acid (liquid) »vapor	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitric »oxide (gas)	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitrimidazine	T37.3X1	T37.3X2	T37.3X3	T37.3X4	T37.3X5	T37.3X6
Nitrite, amyl (medicinal) (vapor)	T46.3X1	T46.3X2	T46.3X3	T46.3X4	T46.3X5	T46.3X6
Nitroaniline	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitroaniline »vapor	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitrobenzene, nitrobenzol	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitrobenzene, nitrobenzol »vapor	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitrocellulose	T65.891	T65.892	T65.893	T65.894
Nitrocellulose »lacquer	T65.891	T65.892	T65.893	T65.894
Nitrodiphenyl	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitrofural	T49.0X1	T49.0X2	T49.0X3	T49.0X4	T49.0X5	T49.0X6
Nitrofurantoin	T37.8X1	T37.8X2	T37.8X3	T37.8X4	T37.8X5	T37.8X6
Nitrofurazone	T49.0X1	T49.0X2	T49.0X3	T49.0X4	T49.0X5	T49.0X6
Nitrogen	T59.0X1	T59.0X2	T59.0X3	T59.0X4
Nitrogen »mustard	T59.0X1	T59.0X2	T59.0X3	T59.0X4
Nitroglycerin, nitro-glycerol (medicinal)	T46.3X1	T46.3X2	T46.3X3	T46.3X4	T46.3X5	T46.3X6
Nitroglycerin, nitro-glycerol (medicinal) »nonmedicinal	T46.3X1	T46.3X2	T46.3X3	T46.3X4	T46.3X5	T46.3X6
Nitroglycerin, nitro-glycerol (medicinal) »nonmedicinal »fumes	T46.3X1	T46.3X2	T46.3X3	T46.3X4	T46.3X5	T46.3X6
Nitroglycol	T52.3X1	T52.3X2	T52.3X3	T52.3X4
Nitrohydrochloric acid	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitromersol	T49.0X1	T49.0X2	T49.0X3	T49.0X4	T49.0X5	T49.0X6
Nitronaphthalene	T65.891	T65.892	T65.893	T65.894
Nitrophenol	T54.0X1	T54.0X2	T54.0X3	T54.0X4
Nitropropane	T52.8X1	T52.8X2	T52.8X3	T52.8X4
Nitroprusside	T46.5X1	T46.5X2	T46.5X3	T46.5X4	T46.5X5	T46.5X6
Nitrosodimethylamine	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitrothiazol	T37.4X1	T37.4X2	T37.4X3	T37.4X4	T37.4X5	T37.4X6
Nitrotoluene, nitrotoluol	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitrotoluene, nitrotoluol »vapor	T65.3X1	T65.3X2	T65.3X3	T65.3X4
Nitrous	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitrous »acid (liquid)	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitrous »acid (liquid) »fumes	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitrous »ether spirit	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitrous »oxide	T54.2X1	T54.2X2	T54.2X3	T54.2X4
Nitroxoline	T37.8X1	T37.8X2	T37.8X3	T37.8X4	T37.8X5	T37.8X6
Nitrozone	T49.0X1	T49.0X2	T49.0X3	T49.0X4	T49.0X5	T49.0X6
Nizatidine	T47.0X1	T47.0X2	T47.0X3	T47.0X4	T47.0X5	T47.0X6
Nizofenone	T43.8X1	T43.8X2	T43.8X3	T43.8X4	T43.8X5	T43.8X6
Noctec	T42.6X1	T42.6X2	T42.6X3	T42.6X4	T42.6X5	T42.6X6
Noludar	T42.6X1	T42.6X2	T42.6X3	T42.6X4	T42.6X5	T42.6X6
Nomegestrol	T38.5X1	T38.5X2	T38.5X3	T38.5X4	T38.5X5	T38.5X6
Nomifensine	T43.291	T43.292	T43.293	T43.294	T43.295	T43.296
Nonoxinol	T49.8X1	T49.8X2	T49.8X3	T49.8X4	T49.8X5	T49.8X6
Nonylphenoxy (polyethoxy-ethanol)	T49.8X1	T49.8X2	T49.8X3	T49.8X4	T49.8X5	T49.8X6
Noptil	T42.3X1	T42.3X2	T42.3X3	T42.3X4	T42.3X5	T42.3X6
Noradrenaline	T44.4X1	T44.4X2	T44.4X3	T44.4X4	T44.4X5	T44.4X6
Noramidopyrine	T39.2X1	T39.2X2	T39.2X3	T39.2X4	T39.2X5	T39.2X6
Noramidopyrine »methanesulfonate sodium	T39.2X1	T39.2X2	T39.2X3	T39.2X4	T39.2X5	T39.2X6
Norbormide	T60.4X1	T60.4X2	T60.4X3	T60.4X4
Nordazepam	T42.4X1	T42.4X2	T42.4X3	T42.4X4	T42.4X5	T42.4X6
Norepinephrine	T44.4X1	T44.4X2	T44.4X3	T44.4X4	T44.4X5	T44.4X6
Norethandrolone	T38.7X1	T38.7X2	T38.7X3	T38.7X4	T38.7X5	T38.7X6
Norethindrone	T38.4X1	T38.4X2	T38.4X3	T38.4X4	T38.4X5	T38.4X6
Norethisterone (acetate) (enantate)	T38.4X1	T38.4X2	T38.4X3	T38.4X4	T38.4X5	T38.4X6
Norethisterone (acetate) (enantate) »with ethinylestradiol	T38.4X1	T38.4X2	T38.4X3	T38.4X4	T38.4X5	T38.4X6
Noretynodrel	T38.5X1	T38.5X2	T38.5X3	T38.5X4	T38.5X5	T38.5X6
Norfenefrine	T44.4X1	T44.4X2	T44.4X3	T44.4X4	T44.4X5	T44.4X6
Norfloxacin	T36.8X1	T36.8X2	T36.8X3	T36.8X4	T36.8X5	T36.8X6
Norgestrel	T38.4X1	T38.4X2	T38.4X3	T38.4X4	T38.4X5	T38.4X6
Norgestrienone	T38.4X1	T38.4X2	T38.4X3	T38.4X4	T38.4X5	T38.4X6
Norlestrin	T38.4X1	T38.4X2	T38.4X3	T38.4X4	T38.4X5	T38.4X6
Norlutin	T38.4X1	T38.4X2	T38.4X3	T38.4X4	T38.4X5	T38.4X6
Normal serum albumin (human), salt-poor	T45.8X1	T45.8X2	T45.8X3	T45.8X4	T45.8X5	T45.8X6
Normethandrone	T38.5X1	T38.5X2	T38.5X3	T38.5X4	T38.5X5	T38.5X6
Normorphine	T40.2X1	T40.2X2	T40.2X3	T40.2X4
Norpseudoephedrine	T50.5X1	T50.5X2	T50.5X3	T50.5X4	T50.5X5	T50.5X6
Nortestosterone (furanpropionate)	T38.7X1	T38.7X2	T38.7X3	T38.7X4	T38.7X5	T38.7X6
Nortriptyline	T43.011	T43.012	T43.013	T43.014	T43.015	T43.016
Noscapine	T48.3X1	T48.3X2	T48.3X3	T48.3X4	T48.3X5	T48.3X6
Nose preparations	T49.6X1	T49.6X2	T49.6X3	T49.6X4	T49.6X5	T49.6X6
Novobiocin	T36.5X1	T36.5X2	T36.5X3	T36.5X4	T36.5X5	T36.5X6
Novocain (infiltration) (topical)	T41.3X1	T41.3X2	T41.3X3	T41.3X4	T41.3X5	T41.3X6
Novocain (infiltration) (topical) »nerve block (peripheral) (plexus)	T41.3X1	T41.3X2	T41.3X3	T41.3X4	T41.3X5	T41.3X6
Novocain (infiltration) (topical) »spinal	T41.3X1	T41.3X2	T41.3X3	T41.3X4	T41.3X5	T41.3X6
Noxious foodstuff	T62.91	T62.92	T62.93	T62.94
Noxious foodstuff »specified NEC	T62.91	T62.92	T62.93	T62.94
Noxiptiline	T43.011	T43.012	T43.013	T43.014	T43.015	T43.016
Noxytiolin	T49.0X1	T49.0X2	T49.0X3	T49.0X4	T49.0X5	T49.0X6
NPH lletin (insulin)	T38.3X1	T38.3X2	T38.3X3	T38.3X4	T38.3X5	T38.3X6
Numorphan	T40.2X1	T40.2X2	T40.2X3	T40.2X4	T40.2X5	T40.2X6
Nunol	T42.3X1	T42.3X2	T42.3X3	T42.3X4	T42.3X5	T42.3X6
Nupercaine (spinal anesthetic)	T41.3X1	T41.3X2	T41.3X3	T41.3X4	T41.3X5	T41.3X6
Nupercaine (spinal anesthetic) »topical (surface)	T41.3X1	T41.3X2	T41.3X3	T41.3X4	T41.3X5	T41.3X6
Nutmeg oil (liniment)	T49.3X1	T49.3X2	T49.3X3	T49.3X4	T49.3X5	T49.3X6
Nutritional supplement	T50.901	T50.902	T50.903	T50.904	T50.905	T50.906
Nux vomica	T65.1X1	T65.1X2	T65.1X3	T65.1X4
Nydrazid	T37.1X1	T37.1X2	T37.1X3	T37.1X4	T37.1X5	T37.1X6
Nylidrin	T46.7X1	T46.7X2	T46.7X3	T46.7X4	T46.7X5	T46.7X6
Nystatin	T36.7X1	T36.7X2	T36.7X3	T36.7X4	T36.7X5	T36.7X6
Nystatin »topical	T36.7X1	T36.7X2	T36.7X3	T36.7X4	T36.7X5	T36.7X6
Nytol	T45.0X1	T45.0X2	T45.0X3	T45.0X4	T45.0X5	T45.0X6