Patient lifetime value, or the lifetime value of a patient, is the contribution a patient generates over a defined relationship or modeled horizon. For a cash-pay brand, calculate it after the variable costs of delivering the service, and label the period you have actually observed. Revenue alone does not show how much value remains to cover acquisition and fixed overhead.
Start with cohorts of patients who began in the same period. Follow their payments, refunds, and delivery costs over time. This makes the calculation easier to audit than a single average built from patients at very different stages.
Choose the value definition first
Three measures answer different questions. Revenue LTV describes cumulative revenue. Contribution LTV subtracts the variable costs associated with serving the cohort. A fully allocated profit measure goes further by assigning fixed overhead according to an explicit method.
For acquisition planning, contribution LTV is often the more useful starting point because it shows what remains before marketing and fixed expenses. State exactly which costs you subtract. Consistency matters more than adopting a label without defining it.
Use the platform cost guide to identify clinical, software, payment, and operational charges. Some are variable, some fixed, and some change in steps as volume crosses a tier.
Define the cohort and observation window
For this example, a cohort begins with a patient’s first paid, non-refunded service. That is a proposed analytical rule, not an industry standard. If your business uses a different entry event, document it and apply it consistently.
Keep the original cohort size as the denominator when calculating cumulative value. Patients who stop buying should not disappear from the denominator; their lack of later contribution is part of the cohort’s economics.
Distinguish observed six-month value from projected lifetime value. A recently acquired cohort has not had enough time to demonstrate a long retention pattern. Comparing it directly with a mature cohort can produce misleading conclusions.
Calculate contribution month by month
Use this operational formula:
Monthly cohort contribution = retained revenue − variable delivery costs
Observed contribution per acquired patient = cumulative cohort contribution ÷ original cohort size
For this model, retained revenue is revenue attributed to delivered service periods after refunds and credits. It is a management model, not a substitute for your accounting revenue recognition policy. Use your actual cohort size and observed costs.
Divide cumulative cohort contribution by the original cohort size to calculate observed contribution per acquired patient. Label the observation period and distinguish measured results from projections.
Include the costs that actually follow delivery
Build a cost mapping that fits your service. It may include medication, shipping, billable clinical reviews, processing charges, and variable support or platform fees. Avoid counting the same cost twice when a vendor bundles several services.
Use a short reconciliation checklist each month:
- Tie retained revenue to the agreed service-period definition.
- Match variable charges to the relevant cohort and period.
- Keep fixed overhead outside contribution unless explicitly allocated.
Handle refunds consistently. If retained revenue is already net of refunds, do not subtract those refunds again as a delivery cost. Record nonrecoverable processing or fulfillment costs separately where they apply.
Payment state matters too. A failed renewal is not collected revenue. Payment providers treat payment recovery as a separate collection process. The failed-payment recovery guide explains how to track recovered balances without treating every retry as a new sale.
Compare contribution with acquisition cost
Define customer acquisition cost using the spending and acquisition event you intend to evaluate. For a channel view, include the channel costs you have chosen to allocate. For a fully loaded view, include relevant creative, agency, and staff costs under a stated policy.
Divide acquisition spending by the original cohort size to calculate acquisition cost per patient. Compare observed contribution per patient with that acquisition cost over the same cohort. This comparison does not establish exact cash payback timing.
The result is not proof of overall profitability. Fixed payroll, product development, compliance work, and other overhead remain outside this simplified contribution model.
Use projections as scenarios
Build conservative, expected, and optimistic cases for future retention and cost. Do not extend early performance indefinitely or assume every remaining patient keeps the same order value.
Test changes in clinical review frequency, medication costs, refunds, and platform tiers. The flat-fee versus revenue-share guide shows why a fee structure can affect contribution differently at different volumes.
Compare cohorts by care program and acquisition source when the data supports it. Use consistent event definitions from the telehealth funnel metrics guide, and avoid exposing sensitive patient details in marketing reporting.
Frequently asked questions
Can I use average revenue divided by churn?
It can be a rough model under restrictive assumptions, but it may hide changing margins, uneven renewals, and immature cohorts. A cohort contribution table is more transparent for operational planning.
Should I remove patients who stop treatment appropriately?
No. Their actual contribution belongs in the original cohort. Do not confuse a clinically appropriate end of care with a problem that should be reversed to increase revenue.
Is there a universal healthy LTV-to-CAC ratio?
No single ratio establishes business health. Cash timing, overhead, uncertainty, capital needs, and service obligations all affect the decision.
What should a dashboard label show?
Show the cohort start rule, observation period, cost definition, and whether the figure is observed or projected. Those labels make the number useful to people who did not build the model.
