The six stages, in order

1 · Enquiry
You describe the patient, the condition and where you are in the journey. No full medical file is needed to start a conversation.
2 · Records and review
The available reports are organised, gaps are identified, and a specialist reviews them. This is where a second opinion belongs, if one is wanted.
3 · Options and estimate
One or more hospitals respond with a suggested approach and a written estimate. This is the stage to compare, not to commit.
4 · Paperwork and travel
Invitation letter, medical visa, attendant visa, flights, accommodation and appointment dates are lined up so they do not conflict.
5 · Treatment and discharge
Admission, procedure, recovery, then discharge papers, medication lists and any pending reports.
6 · Follow-up from home
Review dates, reports that arrive later, and questions that only surface once the patient is home. This stage runs longest and gets planned least.

What a hospital estimate usually covers — and what it does not

Usually includedOften billed separately
Surgeon and anaesthetist feesImplants, stents, prostheses and devices
Operating theatre chargesIntensive care days beyond the planned stay
A stated room category for a stated number of daysTests ordered after the patient is examined in person
Standard medicines during admissionMedicines after discharge
Routine post-operative checks while admittedThe attendant's stay, meals and local travel

None of this is hidden or unusual. It is simply that an estimate is built on assumptions, and the assumptions are rarely spelled out unless someone asks.

What changes the final bill

Four things, most of the time: the patient needs longer in hospital than planned; an implant or device is used; intensive care is needed or extended; or a test done on arrival changes the plan. A fifth, which families feel just as sharply, is a longer stay in the city after discharge while waiting for clearance to fly.

Facilitator, commission agent, or hospital desk

Who pays themWhat they can compare
Hospital international deskThe hospital employs themThat hospital's own services
Commission agentA share of what the hospital bills youWhichever hospitals pay them
Independent facilitatorThe family, as a disclosed feeAny hospital, since none is paying for the referral

All three exist in India and all three can be useful. The point is to know which one you are talking to, because it tells you whose interest sits behind the recommendation. RayCare is the third kind: no hospital tie ups and no referral commission.

What to send, and what not to send, in a first message

Send enough to make the conversation real: who the patient is, their age, the condition as you understand it, what has already been done, and what you are unsure about. That is usually enough for a first reply.

Do not send passport scans, financial details or a complete medical file to anyone before you have spoken and understand who they are. Reports can follow once you know who you are dealing with and through a channel you are comfortable with.

If it helps to see that written out as a process, the four-step method covers it, and you can raise a query without attaching anything.