OPD to IPD Conversion Rate: Formula and What to Fix

If you came here for the formula, it is this:

OPD to IPD conversion rate = (admissions or procedures arising from outpatient consultations ÷ total outpatient consultations) × 100, over the same period and the same scope.

Three rules make the number mean something:

1. Same period for both figures. Comparing this month’s admissions against last month’s consultations produces a number that moves on its own.
2. Same scope for both figures. One specialty, one unit, or the whole hospital — but not consultations from the whole hospital against admissions from one department.
3. Count the admission against the consultation that advised it. A patient advised in March who is admitted in May belongs to March. Counting by the month of admission makes the ratio lag reality by weeks, which is exactly when you need it to be current.

That is the arithmetic. The rest of this page is the part that actually changes the number.

Why most hospitals do not know this figure

Not because it is hard to calculate. Because nobody who reports to them can measure it.

An advertising platform can report a click, a call or a form fill — that is the last event its tools can see. An agency’s monthly report ends at the same line. Everything that decides an admission happens after that, inside the practice: in a callback, in a consultation, in a conversation at home that night, in a pre-op date that moved.

So a hospital can receive a good marketing report every month and have no idea what its conversion rate is, and both facts are consistent.

The trap: one ratio hiding four problems

This is the thing worth understanding before you try to improve the number.

OPD to IPD conversion is a single ratio across four separate steps, and each step loses people for a different reason:

Step	What has to happen	Why it fails
Enquiry → booked	Somebody calls back and fixes a date	Nobody called back fast enough, or called and fixed no date
Booked → attended	The patient actually reaches the clinic	Nobody confirmed, reminded, or rebooked when they went quiet
Attended → decision	The patient settles their doubts	No follow-up after the consultation; doubts answered by a search instead
Decision → admission	A date, a bed, a pre-op	The next step was described, not arranged

A single low ratio tells you something is wrong. It does not tell you which of the four, and the four need completely different fixes. A practice that responds to a low conversion rate by retraining its doctors, when the real loss was nobody calling enquiries back within the hour, will spend six months and change nothing.

So the useful version is not one number. It is four counts over the same period:

1. Enquiries received
2. Appointments booked
3. Appointments attended
4. Admissions or procedures that followed

Wherever the biggest fall sits, that is your constraint. We have set out the four steps and what each one needs in Marketing gives leads — four steps turn them into IPD.

What a “good” conversion rate is

We are not going to give you a number, and you should be suspicious of anyone who does without asking about your case mix first.

The ratio depends almost entirely on things that have nothing to do with how well the practice is run:

• Specialty. A surgical department and a general physician’s OPD are not comparable and never will be.
• Case mix. A hospital taking mostly referred cases will show a higher ratio than one running open health camps — and the one running camps may be the healthier business.
• What counts as an admission. Day-care procedures, diagnostics and observation stays all get counted differently in different places.
• Catchment. A patient travelling three hours for a consultation has already decided more than a walk-in has.

Published benchmarks exist and they vary enormously, which is the honest signal that they are not comparing like with like. Chasing someone else’s figure can push a practice toward advising more procedures, which is the wrong incentive to introduce into clinical decisions.

The number that is actually useful is your own, by specialty, tracked monthly. If it moved, something changed — and finding out which stage moved is the whole value of measuring it.

The step most practices are losing

In our experience it is step three: attended consultation to decision.

A consultation can end with the doctor entirely clear and the patient not. A procedure explained in clinical terms, under time pressure, with a relative half-listening, is a procedure the patient goes home and reconsiders.

What they carry home is a set of questions they did not ask in the room:

• What will this cost in total?
• How many days off work?
• What happens if I wait?
• Is there another way?
• Who do I call if something feels wrong afterwards?

None of those are clinical questions. All of them decide whether the procedure happens. If nobody calls after the consultation, they get answered by a search engine or by a relative’s opinion — and “I’ll let you know” gets recorded as a maybe and experienced by the hospital as a no.

A follow-up call after the OPD, which answers the questions the patient did not ask, is the single highest-leverage change available to most practices. It costs a phone call.

What does not move this number

Worth saying plainly, because this is where budgets usually go:

• More ad spend. It changes the enquiry count. If the fall is at step two, three or four, more enquiries make the leak bigger.
• A new website. It can improve step one. It cannot make anybody ring a patient back.
• More social media. Same as above.
• A new agency. If the constraint is after the enquiry, the agency was never the constraint.

None of those are useless — they are just answers to a different question. Fix the stage that is actually falling first, then buy more volume into a funnel that holds it.

Where QVitals Health fits

We measure this ratio for the practices we work with, stage by stage, because it is the number that tells us where to put the effort — and because no advertising report contains it.

Then we run the four steps:

• Respond within five minutes of an enquiry, and fix a date rather than only answering questions.
• Confirmation, reminders and reconnection between the booking and the visit, so a booked appointment becomes an attended one.
• Follow-up calls after the OPD, so the patient’s doubts are settled by a person instead of a search. Never clinical advice — the medical opinion is the doctor’s and stays the doctor’s.
• Next-stage coordination, admission support and procedure movement, with the post-operative follow-up booked before the patient goes home.

Before any of those four steps, one thing has to be written down, and it is the reason this ratio moves at all.

The doctor who met the patient marks what they read in them — ready, unsure, or held up by cost or time — in two taps in the Growth App, straight after the consultation. You were in the room. You saw the face, you heard what the patient asked and, more tellingly, you heard what they avoided asking: whether the hesitation was the money, the days off work, a relative who has to agree, or plain fear. In almost every practice that reading is lost within the hour, and whoever rings the patient next is working from a name on a list — so everybody gets the same call, and the same call cannot be right for someone who is ready and someone who is frightened. Written down, the stage-3 drop in the table above stops being a mystery. The app records what you read; it never suggests what you should advise.

And it is reported back as completed OPDs and IPD & procedures — people who arrived, and procedures that happened. Not reach, not impressions, not leads.

The services overview shows how the parts connect, and the packages page sets out what is included at each level and what it costs. If you want to know which of the four stages your practice is losing, ask for a practice review — that is the question it answers first.

Related reading

• Marketing gives leads — four steps turn them into IPD
• Patient follow-up call: what to ask after an OPD visit
• Patient journey mapping in healthcare: a real template
• Hospital bed occupancy rate in India: how to improve it
• Why enquiries stop before the OPD
• How to increase OPD in a clinic
• Healthcare lead generation: why leads arrive and stop
• Hospital digital marketing and patient acquisition

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QVitals Health builds patient acquisition and coordination systems for doctors and hospitals in India. Nothing here is clinical guidance, and nothing in our work is designed to increase the number of procedures advised — coordination arranges and follows up, and the medical decision always remains the treating doctor’s.