The billing numbers worth tracking every month

Most billing dashboards report a dozen numbers and change nothing. A number is only worth reporting if a bad reading tells you which step to go and fix.

By that test, five survive.

1. Days in accounts receivable

How long money takes to arrive after the service. Track the median rather than the mean, because one ancient unresolved claim drags an average somewhere useless.

What it tells you: whether claims are going out promptly and being worked when they come back. What to do when it rises: look at the ageing buckets rather than the headline. Money sitting past 90 days is a different problem from money sitting at 30.

2. Percentage of accounts receivable over 90 days

The single most honest number on this list, because it is where write-offs come from. A claim that is 90 days old is not slow, it is stuck, and the reason it is stuck is usually that nobody has looked at it since it was denied.

Watch for CO-29 appearing here. A timely-filing denial means the claim sat somewhere long enough for the window to close, which is a workflow failure, not a payer decision.

3. Denial rate, split by reason code

Not the total. The total tells you there is a problem; the split tells you where. Denials cluster, and two or three codes usually account for most of the value.

Each cluster names a step. CO-16 is data capture at registration. CO-50 is documentation in the room. CO-97 is a coding and modifier question. CO-11 is diagnosis specificity. Sorted this way, the report is a task list.

4. Net collection rate

Of the money you were actually entitled to collect after contractual adjustments, how much did you get? This is the one that catches quiet underpayment, where a payer pays consistently but pays less than the contracted rate.

Gross collection rate does not catch it, which is why it is not on this list.

5. Appeals filed and appeals overturned

Appeal volume is the honest measure of whether denials are being worked at all. A practice or a vendor with almost no appeals is not winning, they are writing off.

Overturn rate tells you whether the appeals are worth filing. Consistently low means the denials are correct and the fix belongs upstream, not in the appeal letter.

What is deliberately not here

Clean claim rate. It measures the share of claims that leave without tripping a clearinghouse edit. It says nothing about whether the payer thought the service was necessary, whether the patient was covered, or whether the code was bundled, which is where the money actually goes. We wrote about that in why a clean claim still gets denied.

Total charges. What you billed is not what you are owed.

Reading them together

Days in AR rising while the denial rate holds steady is a submission or follow-up problem. Denial rate rising while days in AR holds is a front-end or documentation problem. Net collection rate falling while both hold is a contract problem, and it is worth checking your fee schedule against what is actually being paid.

If you would rather have somebody read your remittance data and tell you which of these is your problem, that is exactly what the free audit produces.