The Leak Map: Where ABA Revenue Actually Goes
When an ABA practice tells me revenue is down, the answer is almost never one thing.
Revenue in this industry does not vanish. It leaks, at specific and predictable points, between the moment a payer authorizes care and the moment cash lands in the bank.
I map those points. This is the map.
The funnel
Ten stages, seven of them leak:
The Reservoir. Authorized revenue that has not entered the funnel yet.
Scheduled. Authorized units become appointments.
Cancellations. Booked sessions that do not happen.
Delivered. The session occurs.
Note lag. Time from session to signed note.
Documented. Note signed, ready to convert to a charge.
Charge lag. Time from signed note to claim submission.
Billed. Claim submitted to the payer.
Denials, underpayments, and recoupments. The payer rejects, underpays, or claws money back.
Paid. Cash that actually lands.
Money is in motion at Scheduled, Delivered, Documented, and Billed. Money is leaking at the Reservoir, Cancellations, Note lag, Charge lag, and Denials. Money is collected at Paid.
The seven leaks, and what each one costs
Auth burn and untapped service lines. Deliverable units that never get scheduled, and whole service lines never delivered. Metric: units delivered divided by schedulable capacity, not divided by raw authorized units. Schedulable capacity is what the patient can actually tolerate and the family can actually attend, set by clinical. Measuring against the authorization letter instead produces a number that includes hours nobody could have delivered, and clinical will dismiss it on sight. Starting target 85 to 95 percent. Cheapest leak in the business to fix, because there is no denial and no appeal. Owned by scheduling and clinical.
Cancellations and no-shows. Provider-driven cancellations cost double when staff are hourly and still paid. Metric: cancellation rate, split provider versus client, sized in dollars. Starting target under 5 percent provider-driven. Owned by clinical and front desk.
Note lag. Delivered work that cannot be billed because the note is not signed. Metric: days from session to signed note. Starting target 24 to 48 hours. This one usually clusters on a few clinicians, which makes it very fixable once you can see it by name. Owned by clinical.
Charge lag. Documented work sitting unbilled. Metric: days from signed note to claim submission. Starting target 2 to 3 days. Past the payer's timely filing window it is gone permanently. Owned by billing.
Clean claim rate. Claims that make it out the gateway on the first attempt. Starting target 95 percent or better. Owned by billing.
Denials, underpayments, and recoupments. Three different problems. Denials are visible. Recoupments are visible when money leaves. Underpayments are the quiet one, where a claim pays but pays under the contracted rate, and nobody notices because a payment arrived. Metric: denial rate under 5 to 10 percent, with net collection rate catching the underpayments. Note that CO-45 and PR-1/2/3 are write-downs and patient responsibility, not denials, and treating them as denials will make your rate look worse than it is. Owned by billing.
Net collection rate. Payments divided by contractual charges less contractual adjustments. Starting target 95 percent or better. Days in A/R under 40. Dying AR is anything past 90 days from date of service. This is the bottom of the funnel and the number that summarizes every leak above it.
Why this is fractional CFO work and not bookkeeping
Bookkeeping records what happened. Every leak on this map shows up in the books eventually, as a write-off, a lower revenue figure, or a labor percentage that crept.
By then it is history.
The map is a management instrument, not an accounting one. It requires pulling data from the practice management system, not the general ledger. It requires knowing which metric to compute, what a reasonable target looks like, and which of ten possible problems explains the number that moved.
And critically, it requires someone to own each point. Notice that no single person owns this map. Clinical owns note lag. Scheduling owns auth burn. Billing owns charge lag and denials. Finance owns none of the fixes and all of the visibility.
That is the actual job. Surface the number, assign it to the person who can move it, and inspect what you expect.
What each audience gets from it
For owners: one page. Where is money leaking, how much, and who is fixing it.
For investors: a diagnostic of whether the practice can grow on operations or only on acquisition. A practice delivering 70 percent of its schedulable capacity at a 92 percent net collection rate has substantial revenue available without a single new client.
For operators: a ranked worklist. Not "collections are down." Instead: note lag on three clinicians, two authorizations expiring in 14 days with 40 percent burn, and a payer underpaying on one code. In that order.
Where to start
Do not try to fix all seven at once. Work top-down, because leaks upstream make downstream metrics look worse than they are.
The Reservoir. Auth burn and service line coverage. Cheapest to fix, largest recovery in most practices.
Cancellations, provider-driven first, sized in dollars.
Note lag, by clinician.
Charge lag, with timely filing risk flagged.
Denials and underpayments, by payer and code.
Net collection rate as the summary metric, tracked over time.
Fixing the top of the funnel first also has a pleasant side effect. It makes every downstream metric easier to read, because you are no longer trying to diagnose collections while a fifth of your authorized revenue never made it to a calendar.
The honest version
Most practices do not have a revenue problem. They have a visibility problem that becomes a revenue problem.
Every one of these leaks is measurable with data the practice already has. The reason they persist is not that the numbers are hard to compute. It is that nobody has been assigned to compute them, present them in a form somebody can act on, and follow up.
