CO-97 Denial Code
What it means
The insurer says this service is already paid for as part of another procedure, so it won't pay separately (it was 'bundled').
Why it happens
Billing/coding rules consider this service part of a larger procedure on the same day.
What to do
Usually a provider coding matter. If the service was genuinely separate, the billing office can appeal with a modifier or documentation. You typically don't owe a CO-97 amount.
Can you appeal it?
Yes, with correct coding/modifiers.
Official description
The benefit for this service is included in the payment for another service already adjudicated (bundling).
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