Primary Substance	Definition
Alcohol Only	This category includes admissions for abuse of alcohol alone, with no secondary drug abuse.
Alcohol with Secondary Drug	This category includes admissions for primary abuse of alcohol with secondary abuse of drugs.
Cocaine (smoked)	This category includes admissions for smoked cocaine such as crack.
Cocaine (other route)	This category includes admissions for cocaine taken by routes other than smoking.
Marijuana	This category includes admissions for THC and any other cannabis sativa preparation.
Heroin	This category includes admissions for heroin.
Other opiates	This category includes admissions for non-prescription use of methadone, codeine, morphine, oxycodone, hydromorphone, meperidine, opium, and other drugs with morphine-like effects.
PCP	This category includes admissions for phencyclidine
Hallucinogens	This category includes admissions for lysergic acid diethylamide (LSD), dimethyltryptamine (DMT), dimethoxyphenylethylamine (STP), mescaline, psilocybin, peyote, etc.
Amphetamines	This category includes methamphetamine and other amphetamines to include amphetamines, Benzedrine, Dexedrine, preludin, Ritalin and any other amines and related drugs.
Other stimulants	This category includes admissions for all other stimulants.
Tranquilizers	This category includes admissions for benzodiazepines, which include diazepam, flurazepam, chlordiazepoxide, clorazepate, lorazepam, alprazolam, oxazepam, temazepam, prazepam, triazolam, clonazepam, halazepam and other tranquilizers.
Sedatives	This category includes admissions for barbiturates including phenobarbital, Seconal, Nembutal and other sedatives/hypnotics such as chloral hydrate, Placidyl, Doriden, etc.
Inhalants	This category includes admissions for ether, glue, chloroform, nitrous oxide, gasoline, paint thinner, etc.
Other/unknown	This category includes admissions for other or unknown substances not listed above.