This post is for hospital marketing and revenue teams advertising elective surgery and other considered treatments, where the gap between the first click and the surgery can run for months. Value-based bidding asks you to tell Google what each conversion is worth. For a patient who may take six months to decide, a form fill is a weak proxy for revenue, and the real revenue arrives after the point at which Google can still link it to the click.
The article explains how to build a stage-weighted value scheme, how to work with Google's conversion windows, and how to measure the lag in your own data. It uses hypothetical numbers where numbers are needed and labels them. It assumes you already track enquiries in a CRM and use or plan to use Smart Bidding.
The constraint that shapes everything: 90 days
Two documented limits matter.
First, Google's help on conversion delay says conversions can be reported up to 90 days after a click, depending on the conversion window you choose. Second, Google's page on offline conversion imports using GCLID describes a click-to-conversion cycle of 14 or 90 days depending on the data source, and says to create conversion actions first and wait several hours before uploading to them.
So a surgery that takes place five months after the click cannot be attributed to the click through a standard import. Do not try to force it. Design the scheme around events that happen inside the window, and assign them values that reflect their likely contribution to the eventual surgery.
Step 1: Map the funnel into stages
Write the journey as observable stages recorded in your CRM. A typical elective surgery pathway might be:
- Enquiry received (form, call or WhatsApp).
- Contact made and enquiry qualified by the care coordinator.
- Consultation booked.
- Consultation completed.
- Diagnostics or second opinion completed.
- Treatment plan accepted or surgery scheduled.
- Surgery performed.
Stages 1 to 4 often fall within 90 days for most patients. Stages 6 and 7 may not. The CRM must record a date for each stage. A system such as Pioneer CRM keeps enquiries, lead ownership and follow-ups in one place, which is what makes stage dates available to analyse.
Step 2: Measure your own lag distribution
Do not guess the lag. Export, for a past cohort of leads that have since completed, the click date, the enquiry date and the date of each later stage. Then compute, for each stage, what share of eventual completions had reached that stage within 30, 60 and 90 days. The method:
- Take all enquiries from a set of months old enough for most to have resolved.
- For each, record whether it reached each stage and when.
- For each stage, produce a cumulative distribution of days since the click.
- Read off the median and the 90th percentile.
The result tells you which stages fall inside Google's window for most patients, and which do not. Do not borrow a distribution from another hospital; elective cataract and bariatric surgery will not behave alike, and your patient mix is your own.
Step 3: Weight the stages
Stage weighting assigns each trackable stage a value that reflects its probability of becoming revenue, multiplied by the revenue. A clear formula:
value of stage = probability of eventual surgery from that stage × average revenue per surgery × a discount for uncertainty
A hypothetical example for illustration only. Suppose that, in a hospital's own past data, one in twenty enquiries became a surgery, one in six completed consultations did, and one in two accepted treatment plans did. Suppose average billing per surgery is a round figure the finance team confirms. The values for stages would then run from a small fraction of the surgery value at enquiry, to a larger fraction at consultation, to a substantial fraction at plan acceptance. These ratios are invented to show the structure. Your numbers come from your own cohort.
Two cautions. Use net revenue or margin, as the finance team defines it, and keep the definition fixed. And apply some conservatism: the most advanced stage values should not equal the surgery value if the plan can still fall through.
Step 4: Decide which events you send
You do not need to send every stage. Choose by volume and timing.
| Stage | Volume | Timing | Role |
|---|---|---|---|
| Qualified enquiry | High | Days | Primary optimisation event for volume |
| Consultation completed | Medium | Weeks | Quality signal, higher value |
| Plan accepted or surgery scheduled | Low | Months | Highest value, may exceed the window |
For Smart Bidding, an event with too few conversions per month is hard to learn from. A common design is to optimise on the qualified enquiry and consultation-completed events with different values, and to use the later stage mainly for analysis in the CRM. If you send the later stage, use the date of the stage as the conversion time, and expect it to be attributed only where it falls inside the window.




