Problems I am trying to solve (III) ►How to reconcile ICDs traditional classification and legacy with new requirements ►Retain stability with previous versions A classification – not an ontology Fixed depth; mutually exclusive and exhaustive at every level ‣ Every patient event counted exactly once at every granularity ►Overcome shortcomings of previous versions Shorten 20-year revision cycle & support Social Computing approaches Reconcile with modern knowledge Support multiple views & new requirements ►Multi-layered structure ►Ontology layer – hopefully reconciled with SNOMED ►Foundation layer – lots more around the skeleton of the ontology ► Linearizations – traditional classifications linked to Foundation layer 5
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