Claim Denial Rate
Definition, formula, a worked example, and the mistakes that make it wrong. For infusion centers.
What is claim denial rate?
Formula
Claims (or claim lines, or dollars) denied on first processing ÷ claims processed for the first time
What each part means
- Denial
- A payer decision not to pay a claim or a line, shown on the payer's remittance with a reason code.
- First processing
- The first time the payer decides on the claim. This is the initial denial rate. A final rate after appeals and resubmissions shows the money, not the process.
- Claims, lines, or dollars
- Infusion claims often have several lines (administration, drug, and waste), and one line can be denied while the rest pay. Pick one unit, label it, and keep it.
- Normal adjustments
- Reductions that are not denials and should be left out: the write-down from your charge to the allowed amount (reason code 45), Medicare sequestration (reason code 253), and patient responsibility.
Worked example
In a quarter, a center submits 1,000 claim lines worth $1,000,000 in expected payment. After leaving out normal adjustments, 60 lines worth $90,000 are denied the first time. The denial rate is 60 ÷ 1,000 = 6% by count and $90,000 ÷ $1,000,000 = 9% by dollars, because denied lines lean toward costly drug lines.
Run your own numbers: Infusion revenue leakage calculatorWhere the numbers come from
- Payer remittances (835 files) from your billing system or clearinghouse, with reason codes and paid amounts
- Claim lines, with drug and administration codes, units, and modifiers
- The authorization and coverage on file for each visit, to trace each denial back to its cause
Mistakes that make it wrong
- Counting normal adjustments as denials
- Reason codes 45 and 253 and patient responsibility appear on almost every paid claim. Including them makes the rate look alarming and it will not move no matter what the team does.
- Using final status
- Appeals turn some denials into payments. A rate based on final status looks better than the work it took. Track the initial rate for the process.
- Ranking the work by count
- A denied drug line can be worth many times a denied administration line. Rank open work by dollars at risk and by appeal deadline.
- Confusing claim denials with prior authorization denials
- A prior authorization denial happens before treatment and puts a patient at risk. A claim denial happens after the visit and puts money at risk. Track them separately.
What good looks like
We do not know of a reliable public benchmark for infusion centers, and published figures rarely say whether they count claims or lines, or initial or final denials. Measure your own initial denial rate by dollars for a quarter, then track the trend by root cause.
Common questions
Why is our infusion denial rate so high?
Usually for a small number of reasons. Group each denied line's reason code into a cause such as eligibility, authorization, or coding, then cut by payer, drug, and site to see which step failed.
Do reason codes 45 and 253 count as denials?
No. Code 45 is the normal reduction from your charge to the allowed amount, and code 253 is Medicare sequestration. Leave both out of your denial rate.
Should we prevent denials or appeal them?
Prevent eligibility, authorization, and frequency denials at intake. Correct and resubmit coding and billing denials. Appeal medical necessity denials your documentation supports, and payer errors.
Can I get denial rate from my infusion software?
Usually not. Denial rate needs remittance data from the billing system or clearinghouse. Infusion software often holds expected amounts, which are estimates, not payments.
Should the denial rate be by count or by dollars?
Use both. Dollars show where to focus, because a few drug lines can outweigh many small ones. Counts show whether the process is getting better.
Want claim denial rate from your own data?
We build the reports that calculate it the same way every month, from the systems you already use.