Wiki Add on Code reduction

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Hello,

We are billing add on codes with the appropriate primary code. Payers were reducing the add on code by 50% and citing they were applying a multiple procedure reduction to the add on code. The add on code was not billed with a 51 modifier and I appealed it.

The Payers are now reducing the primary code by 50% and paying the add on code in full and citing multiple procedure logic was applied. Medicare does not reduce the primary code- they pay the primary code and add on code at 100% of the allowed.

Does anyone know if there is something available that states they cannot reduce the allowed for the primary code billed?

Thank you
 
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