Code Systemv0.1.0·draft
ICR Adverse Event Causality
WHO/CIOMS causality classification of an adverse event following an intervention — intervention-neutral: covers AEFI (immunization) and MDA drug pharmacovigilance alike. Top-level WHO categories; immunization implementations may use WHO IMMZ.AdverseEvent's finer A1–A4 subtypes (espen-v3 / §17.2 C1).
Concepts (4)
4 shown| Code | Display | Definition |
|---|---|---|
| a-consistent | A — Consistent causal association | Consistent causal association to the intervention (WHO category A; immunization subtypes A1 product, A2 quality defect, A3 administration error, A4 anxiety). |
| b-indeterminate | B — Indeterminate | Indeterminate: conflicting trends or insufficient evidence. |
| c-coincidental | C — Coincidental / inconsistent | Inconsistent causal association — coincidental, due to underlying/emerging condition or other exposure. |
| d-unclassifiable | D — Unclassifiable | Unclassifiable: insufficient information to assess. |