The encounter will be update to include the following new backbone element diagnosis replacing the indication property. Encounter.diagnosis 0..* backbone element Encounter.diagnosis.condition 1..1 reference(condition) Encounter.diagnosis.role 0..1 codeableconcept (new valueset with: _ admission diagnosis, discharge diagnosis, _ chief complaint, comorbidity, pre-op, post-op, billing) Encounter.diagnosis.rank 0..1 positiveInt (this is to be sequential per role type) The hospitalization.dischargeDiagnosis and hospitalization.admissionDiagnosis will also be removed. The description on the reason property will be updated to indicate that its purpose as a more patient centric valueset/concept. The encounter-primaryDiagnosis and encounter-relatedCondition extensions will be removed, as they are now redundant, and represented in the core resource. PA Call 15 Nov 2016 Also need to consider the search parameter updates as per tracker 10578