Why am I being charged more than my copay?

Excuse me, I'm a bit confused about my recent medical bill. I noticed that the amount charged exceeds my copay amount. Could you please explain to me why this is the case? I've always been diligent about paying my copay and ensuring that my insurance is up to date. Is there a specific service or treatment that was not covered by my insurance plan? Or is there a mistake in the billing process? I would greatly appreciate any clarification you can provide to help me understand this discrepancy.