List of International Classification of Diseases (ninth revision) codes used to define exposures, outcomes and covariates

DiagnosisDiagnosis codeDescription
Methamphetamine304.40Amphetamine and other psychostimulant dependence, unspecified
304.41Amphetamine and other psychostimulant dependence, continuous
304.42Amphetamine and other psychostimulant dependence, episodic
305.70Amphetamine or related acting sympathomimetic abuse, unspecified
305.71Amphetamine or related acting sympathomimetic abuse, continuous
305.72Amphetamine or related acting sympathomimetic abuse, episodic
Asthma493.01Extrinsic asthma with status asthmaticus
493.02Extrinsic asthma with (acute) exacerbation
493.11Intrinsic asthma with status asthmaticus
493.12Intrinsic asthma with (acute) exacerbation
493.91Asthma, unspecified type, with status asthmaticus
493.92Asthma, unspecified type, with (acute) exacerbation
COPD491.21Obstructive chronic bronchitis with (acute) exacerbation
491.22Obstructive chronic bronchitis with acute bronchitis
Pneumonia481.0Pneumococcal pneumonia (Streptococcus pneumoniae pneumonia)
482.2Pneumonia due to Haemophilus influenzae
482.30Pneumonia due to Streptococcus, unspecified
482.31Pneumonia due to Streptococcus, group A
482.32Pneumonia due to Streptococcus, group B
482.39Pneumonia due to other Streptococcus
482.40Pneumonia due to Staphylococcus, unspecified
482.41Methicillin susceptible pneumonia due to Staphylococcus aureus
482.42Methicillin resistant pneumonia due to Staphylococcus aureus
482.49Other Staphylococcus pneumonia
482.84Pneumonia due to Legionnaires’ disease
483.0Pneumonia due to Mycoplasma pneumoniae
Respiratory failure518.81Acute respiratory failure
Tobacco305.1Tobacco use disorder
989.84Toxic effect of tobacco
V15.82Personal history of tobacco use
Cocaine304.20Cocaine dependence, unspecified
304.21Cocaine dependence, continuous
304.22Cocaine dependence, episodic
305.60Cocaine abuse, unspecified
305.61Cocaine abuse, continuous
305.62Cocaine abuse, episodic