Archived from 2021-01-12 - SNOMED on FHIR Meeting (TS)
Discrepancy between result of subsumes (2 codes that don't subsume give "not subsumed" defined as meaning the codes are disjoint which doesn't allow for siblings which have a common ancestor and are therefore not disjoint despite ) and result of closure. Ticket - https://jira.hl7.org/browse/FHIR-29119
See http://build.fhir.org/valueset-concept-subsumption-outcome.html hopefully just word tweaking required although operation is normative.
Michael Lawley our last note in this discussion was that a conversation with you, Jim Steel and Graham Grieve would be helpful.