More days or units were billed than the payer will accept for that code.
Usually an appeal
Check the units against the code's own limit first, because the commonest cause is a units field that counted minutes instead of units. Where the extra units were genuinely delivered, appeal with the timed-code minutes and the daily note.
N362 commonly rides alongside these. Our reading, not a published mapping: X12 publishes no adjustment-to-remark table.
| Code | What that one means |
|---|---|
| CO 151 | The payer says the records do not support this many units or visits. |
| PR 119 | The benefit maximum for this period has been reached. |
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