Hi @ahmedsakri - this is a deceptively difficult problem. The simple answer is to say "Use `Patient.active = true`": https://hl7.org/fhir/patient-definitions.html#Patient.active and that might be sufficient for your use case. But it means that you will have to add filters for

active=true

to everything you do with patients, which is usually undesirable and error prone. Usually "active" has some kind of business definition that will depend on your organization. For example, it could be that there is an

Account

(https://hl7.org/fhir/account.html) or a

CarePlan

(https://hl7.org/fhir/careplan.html) with

status=active

. There is no universal definition, so it usually depends on your business needs.