List of International Classification of Diseases (ninth revision) codes used to define exposures, outcomes and covariates
Diagnosis | Diagnosis code | Description |
Methamphetamine | 304.40 | Amphetamine and other psychostimulant dependence, unspecified |
304.41 | Amphetamine and other psychostimulant dependence, continuous | |
304.42 | Amphetamine and other psychostimulant dependence, episodic | |
305.70 | Amphetamine or related acting sympathomimetic abuse, unspecified | |
305.71 | Amphetamine or related acting sympathomimetic abuse, continuous | |
305.72 | Amphetamine or related acting sympathomimetic abuse, episodic | |
Asthma | 493.01 | Extrinsic asthma with status asthmaticus |
493.02 | Extrinsic asthma with (acute) exacerbation | |
493.11 | Intrinsic asthma with status asthmaticus | |
493.12 | Intrinsic asthma with (acute) exacerbation | |
493.91 | Asthma, unspecified type, with status asthmaticus | |
493.92 | Asthma, unspecified type, with (acute) exacerbation | |
COPD | 491.21 | Obstructive chronic bronchitis with (acute) exacerbation |
491.22 | Obstructive chronic bronchitis with acute bronchitis | |
Pneumonia | 481.0 | Pneumococcal pneumonia (Streptococcus pneumoniae pneumonia) |
482.2 | Pneumonia due to Haemophilus influenzae | |
482.30 | Pneumonia due to Streptococcus, unspecified | |
482.31 | Pneumonia due to Streptococcus, group A | |
482.32 | Pneumonia due to Streptococcus, group B | |
482.39 | Pneumonia due to other Streptococcus | |
482.40 | Pneumonia due to Staphylococcus, unspecified | |
482.41 | Methicillin susceptible pneumonia due to Staphylococcus aureus | |
482.42 | Methicillin resistant pneumonia due to Staphylococcus aureus | |
482.49 | Other Staphylococcus pneumonia | |
482.84 | Pneumonia due to Legionnaires’ disease | |
483.0 | Pneumonia due to Mycoplasma pneumoniae | |
Respiratory failure | 518.81 | Acute respiratory failure |
Tobacco | 305.1 | Tobacco use disorder |
989.84 | Toxic effect of tobacco | |
V15.82 | Personal history of tobacco use | |
Cocaine | 304.20 | Cocaine dependence, unspecified |
304.21 | Cocaine dependence, continuous | |
304.22 | Cocaine dependence, episodic | |
305.60 | Cocaine abuse, unspecified | |
305.61 | Cocaine abuse, continuous | |
305.62 | Cocaine abuse, episodic |