Financial models for ambulatory surgery centers
Case costing by CPT against real payer reimbursement, implant cost as the variable that decides whether a case makes money, block utilization, and the distribution waterfall to physician owners. Built to order, checked before it ships.
How the money moves
An ASC earns a facility fee per case, set by the payer and the CPT, and spends most of it on the supplies and implants that case consumed. The gap between those two numbers is the whole business, and it varies enormously: the same procedure can be strongly profitable under one contract and lose money under another once a hardware cost is in it. Above that sits fixed cost that only pays for itself when the rooms are used — block time released late is capacity that was bought and never sold — and below it sits a distribution to physician owners that has to follow the operating agreement's ownership percentages exactly.
A finished sample for ambulatory surgery centers
Case costing by CPT and payer
Revenue modeled as cases times an average rate. The same knee replacement pays $9,150 under one contract and $21,500 under another; an average puts money on Medicare cases that Medicare does not pay.
- 6 of 40
- Cases that lose money
- ($3,699)
- Lost on those cases
- 5
- Loss-making cases the average hides
Larkspur Surgery Center is illustrative. The data is invented; the mechanics are not.
What we build for ambulatory surgery centers
The workbooks this business runs on
- 01
Case costing by CPT and payer
Reimbursement by payer against the actual supply and implant cost for that case, so the cases that lose money are named rather than averaged away inside a profitable service line.
- 02
Distribution waterfall
Distributable cash to physician owners by ownership percentage, following the operating agreement, with the reserve and the tax distribution taken in the right order.
- 03
Service line or new OR pro forma
Case volume ramp, staffing to the new room, equipment financing, and the utilization the room has to hit before it stops costing money.
- 04
Block utilization reporting
Booked against released against used, by block and by surgeon, with the release deadline that decides whether the time could have been resold.
- 05
Partner reporting pack
The monthly set physician owners will actually read: cases, payer mix, cost per case, distributions to date, and variance to plan.
Every one of these is a request on your board, not a project with a scope document. All of them are on the one subscription — there is no build type you have to move up a plan to reach.
Where these models usually go wrong, and what we do instead
Four mistakes a model makes when the builder has never seen this business
- 01
Revenue modeled as cases times an average rate, which hides the payer mix that decides the whole year
What we do instead. We price every case at the CPT and the payer that will actually pay for it, so a shift in payer mix appears in the forecast the month it starts.
- 02
Implants averaged into supply cost instead of sitting on the case, so the loss-making cases never surface
What we do instead. We put implant and hardware cost on the case itself, which produces the list of procedures that lose money under a named contract — usually the first thing the model finds.
- 03
Distributions modeled as a share of profit rather than following the operating agreement's actual waterfall
What we do instead. We build the waterfall from your operating agreement at the ownership percentages on file, so a distribution ties out before it is paid rather than after.
- 04
Utilization measured on booked time instead of used time, which reports a full schedule for rooms that sat empty
What we do instead. We measure block on used minutes against available minutes with late releases broken out, so you can see which blocks are worth taking back.
When people call us
Usually one of these has just happened
- Adding an OR, a service line, or a new specialty
- Syndicating: bringing in physician partners, or buying one out
- An offer from a management company or a hospital joint venture
- A payer contract up for renegotiation
- Board or partner reporting that has stopped being believed
Want this built for your numbers?
Every workbook is recalculated with a formula engine, its checks are proved able to fail, and a second pass re-derives the headline numbers before it ships.
Not ready? Get a free teardown of a sheet you already rely on.