PR-45PR group · Allowed amount

PR-45 denial code: charge exceeds the fee schedule

PR-45 is the group code doing the damage: the same adjustment as its CO twin, pointed at the patient.

PR-45 reflects the difference between the charge and the allowed amount, assigned as patient responsibility. For a participating provider, that difference is normally a contractual write-off, and the PR group code asserts otherwise.

What PR-45 means

Participating agreements almost universally prohibit balance billing the difference between charge and allowed amount. A PR-45 on an in-network claim is therefore worth challenging on the group code alone, before any question of the amount. For genuinely out-of-network care, balance billing may be permitted — except where federal or state surprise-billing protections apply, which cover emergency care and many out-of-network services delivered at in-network facilities.

Why PR-45 fires

  • An in-network claim was adjusted with a patient-responsibility group code in error.
  • The provider is out of network and balance billing is permitted.
  • Surprise-billing protections apply and the balance may not be billed.
  • The allowed amount itself is disputed under the contract.

Is PR-45 worth appealing?

Rarely an appeal — usually a fix

Check the group code against your network status. In network, the balance is contractual and should not be PR; out of network, check whether surprise-billing protections cover the encounter before billing anything.

PR-45 — frequently asked

Can I balance bill?
In network, almost never — the participating agreement prohibits it. Out of network, sometimes, unless federal or state surprise-billing protections cover the encounter.
What if the group code is wrong?
Then it is worth correcting, because it determines whether the amount is a write-off or a patient charge, and billing a patient for a contractual adjustment is a compliance problem.

Related guides

CO-45 · Allowed amountCO-94 · Allowed amountCO-131 · Allowed amount

Sources

Reason-code meanings are paraphrased from the X12 Claim Adjustment Reason Code list for plain-language reference; they are not reproduced verbatim. This is general information, not legal, coding, or medical advice — always confirm against the payer's remittance and policy.

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