Appendix table 1.
ICD 9 codes description for incident and prevalent hypersensitivity reactions
| ICD9 codes | Descriptions |
|---|---|
| Incident (outcome) and prevalent (exclusionary during baseline) events | |
| 995.0 | Other anaphylactic reaction |
| 995.2 | Unspecified adverse effect of unspecified drug, medicinal and biological substance |
| 995.3 | Allergy, unspecified, not elsewhere classified |
| 999.4 | Anaphylactic shock-serum |
| Prevalent (exclusionary during baseline) events | |
| E930 | Antibiotics causing adverse effects in therapeutic use |
| E931 | Other anti-infectives causing adverse effects in therapeutic use |
| E932 | Hormones and synthetic substitutes causing adverse effects in therapeutic use |
| E933 | Primarily systemic agents causing adverse effects in therapeutic use |
| E934 | Agents primarily affecting blood constituents causing adverse effects in therapeutic use |
| E935 | Analgesics antipyretics and antirheumatics causing adverse effects in therapeutic use |
| E936 | Anticonvulsants and anti-parkinsonism drugs causing adverse effects in therapeutic use |
| E937 | Sedatives and hypnotics causing adverse effects in therapeutic use |
| E938 | Other central nervous system depressants and anesthetics causing adverse effects in therapeutic use |
| E939 | Psychotropic agents causing adverse effects in therapeutic use |
| E940 | Central nervous system stimulants causing adverse effects in therapeutic use |
| E941 | Drugs primarily affecting the autonomic nervous system causing adverse effects in therapeutic use |
| E942 | Agents primarily affecting the cardiovascular system causing adverse effects in therapeutic use |
| E943 | Agents primarily affecting gastrointestinal system causing adverse effects in therapeutic use |
| E944 | Water mineral and uric acid metabolism drugs causing adverse effects in therapeutic use |
| E945 | Agents primarily acting on the smooth and skeletal muscles and respiratory system causing adverse effects in therapeutic use |
| E946 | Agents primarily affecting skin and mucous membrane ophthalmological otorhinolaryngological and dental drugs causing adverse effects in therapeutic use |
| E947 | Other and unspecified drugs and medicinal substances causing adverse effects in therapeutic use |
| E948 | Bacterial vaccines causing adverse effects in therapeutic use |
| E949 | Other vaccines and biological substances causing adverse effects in therapeutic use |