When a TPA query arrives in the billing department's inbox, the obvious cost is the time it takes to answer it. Someone needs to pull the case, find the documents, draft a response and send it back. Call it 45 minutes on a straightforward query.
That is not the real cost.
The real cost is what happens to everything else while that query is being handled.
What a query actually interrupts
Billing teams at most hospitals are not structured around query management. They are structured around new claim processing — verifying documents, completing submissions, chasing pre-authorisations. When a query arrives, it competes directly with that work.
A biller who is mid-way through preparing a pre-auth for a scheduled procedure has to stop, switch contexts, locate a file that may be three weeks old, reconstruct what happened in that case and figure out what the TPA is actually asking. Then they have to write a coherent response with the right attachments, in the right format, for that specific insurer.
Context-switching like this is expensive. Research on knowledge worker productivity consistently shows that deep task interruptions cost far more time than the interruption itself — typically 20 to 30 minutes to fully return to the original task. For a billing team managing eight to twelve queries a day, the accumulated cost is significant.
What the backlog looks like at a 200-bed hospital
A 200-bed hospital processing 300 to 400 claims a month typically generates 60 to 90 TPA queries per month across all active insurers. That is three to four queries per working day, on average.
But queries do not arrive uniformly. Some insurers batch their queries at end of week. Some arrive during peak admission periods when the billing team is already stretched. A team managing normal claim volume on a Tuesday might receive seven or eight queries on a Wednesday morning.
Each query has a response deadline — typically 24 to 72 hours depending on the insurer and the claim type. Missing those deadlines does not just delay the query. It delays the claim's overall resolution, which can push the entire payment timeline back by two to three weeks.
Over a full month, the cumulative time cost of query management — answering, context-switching, rework, follow-up — is typically between 80 and 120 person-hours at a 200-bed hospital. At average billing staff rates, that is a recurring cost that rarely shows up on any report, because it is absorbed into general billing overhead.
The rework cycle no one measures
There is a second cost that is harder to quantify but equally significant: rework.
When a query goes unanswered for more than two days, the probability of claim denial increases. When it gets answered late with an incomplete response, the insurer often sends a second query. That second query arrives while the team is already managing the next wave.
Teams that track their query resolution rate carefully often find that 20 to 30 percent of queries require more than one response cycle. Each additional cycle is another 45 minutes to an hour of staff time, plus another two to five days of payment delay.
Where the leverage is
The highest-leverage change is not answering queries faster — it is reducing how many arrive in the first place.
Most TPA queries are predictable. They ask for documents that were not included in the original submission, or they flag mismatches between the claim file and the insurer's records. When billing teams can verify submissions before they go out, the query rate drops significantly.
The second lever is structure. Teams that route queries through a consistent workflow — assigned, tracked, with clear deadlines — resolve them faster and with less context-switching. An unmanaged inbox is not inevitable. It is a workflow problem, and it has a workflow solution.