Denial Code 45: What It Means and What to Do
If you are looking up code 45, here is what it means and what to do next. This is usually a patient-cost or contractual amount, but if it looks wrong, we can help you check.
Denial code 45 means: Your charge was more than the fee schedule, maximum allowable, or contracted amount the plan permits, so the difference is written off.
Why it happens: You typically see this when a provider's billed amount is higher than the rate negotiated with the insurer, leaving a contractual write-off rather than a patient bill.
Is it appealable? This code reflects a patient-cost or contractual amount, not a denial you appeal directly. If you believe it was applied in error, the underlying claim can be reviewed.
What to send: the missing element for this code, a short appeal letter citing the plan's claims-procedure rules, and any clinical support.
Note: code 45 may appear on your remittance with a group-code prefix such as PR-45 (patient responsibility) or CO-45 (contractual obligation). The denial reason is the same.
Think this was applied in error?
A senior reviewer can check your bill and the underlying claim for errors. $0 upfront, with no obligation.
Get help with code 45Frequently asked questions
- What does denial code 45 mean?
- Your charge was more than the fee schedule, maximum allowable, or contracted amount the plan permits, so the difference is written off.
- Is denial code 45 appealable?
- It is often not appealable directly, but the underlying claim may be.
- What should I send to appeal a code 45 denial?
- Supply the missing element for this code, a short appeal letter citing the plan's claims-procedure rules, and any clinical support. Apellica prepares and files this for you.