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N66Remark Code (RARC)Deactivated

Effective 01/01/2000 · Stopped 02/05/2005

N66 Remark Code (Deactivated)

N66 is a retired remittance advice remark code. Payers stopped using it on 02/05/2005.

Seeing N66 on a Remittance?

N66 was retired effective 02/05/2005 and should not appear on new remittances.
Official retirement note: Consider using N29 or N225.
If N66 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.