M15 Denial Code
Services billed separately were bundled, because the payer considers them components of one procedure.
A remark code sits beside the adjustment code on the remit and says why the claim was reduced.
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A Remark Code Is Not the Denial
The adjustment code says the claim was reduced. This one says why. You need both to know what to send back.
What to Do
Look up whether an edit pair exists and whether its modifier indicator allows an override at all. Where the indicator is 0 it cannot be unbundled and no appeal will change that.
Code meanings verified against x12.org/codes/remittance-advice-remark-codes. The wording, the pairing and the recommended action are ours, not the payer's.
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Codes It Appears With
M15 commonly rides alongside these. Our reading, not a published mapping: X12 publishes no adjustment-to-remark table.
Your Questions Answered
What does denial code M15 mean?
Services billed separately were bundled, because the payer considers them components of one procedure.
What should I do about M15?
Look up whether an edit pair exists and whether its modifier indicator allows an override at all. Where the indicator is 0 it cannot be unbundled and no appeal will change that.
Which denial codes appear with M15?
M15 commonly rides with CO 97, CO 236. The adjustment code says the claim was reduced; the remark code says why.
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