What is being managed here, and what is not
A healthcare pipeline is an administrative trail, not a sales funnel. It answers four questions that hospitals and clinics are frequently unable to answer: how many people asked us about a service last month, how many of them were actually contacted back, how many attended, and what happened to the ones who did not. Those are service questions before they are commercial ones. A patient who called about a knee replacement, was quoted a figure, and never heard from the hospital again is not a lost sale so much as a person left in the middle of a decision.
The boundary matters as much as the routine. Clinical information belongs in the clinical system. The pipeline holds names, contact details, department, dates and administrative status, and nothing that would embarrass anyone if the wrong person opened it. Everything below is designed around that boundary rather than bolted onto it afterwards.