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N18Remark Code (RARC)Deactivated

Effective 01/01/2000 · Stopped 01/31/2004

N18 Remark Code (Deactivated)

N18 is a retired remittance advice remark code. Payers stopped using it on 01/31/2004.

Seeing N18 on a Remittance?

N18 was retired effective 01/31/2004 and should not appear on new remittances.
Official retirement note: Consider using N14
If N18 appears on an old ERA you are reworking, interpret it per the remittance date, then follow the current code's guidance for any corrected claim.