Why do the same denials keep happening again and again?

Does anyone else deal with this?

we keep seeing the same types of denials come back even after they get fixed and resubmitted. at some point it stops feeling like a one-off billing mistake and starts feeling like something is broken earlier in the process.

like maybe eligibility wasn’t checked properly, auth was missed, documentation didn’t support the code, or someone assumed another person was handling the next step.

by the time it reaches AR, everyone is just trying to fix that one claim, but it feels like nobody has time to ask why it keeps happening in the first place.

for people doing billing/coding, what denial do you see that always makes you think “we should have caught this before it went out”?