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M43Remark Code (RARC)Deactivated
Effective 01/01/1997 · Stopped 01/31/2004

M43 Remark Code (Deactivated)

M43 is a retired remittance advice remark code. Payers stopped using it on 01/31/2004.

Seeing M43 on a Remittance?

  • M43 was retired effective 01/31/2004 and should not appear on new remittances.
  • Official retirement note: Consider using Reason Code 23
  • If M43 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.
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Code Facts

CodeM43
TypeRemark Code (RARC)
StatusDeactivated
Effective01/01/1997
Stopped01/31/2004

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