Free tool
Denial Code Lookup
Decode any CARC or RARC and see the root cause, who owns the fix, and whether to appeal or send a corrected claim.
This tool runs entirely in your browser. Nothing you enter is uploaded, saved, or tracked, and this page has no analytics or chat widget.
If one category keeps reappearing on your worklist, the fix is upstream of billing. I'll look at your denial mix and tell you where it's being created.