If the MAO-002 comes back with the encounter accepted but some of the service lines rejected, should we consider the encounter as rejected, requiring a void and replacement of the whole encounter?

Answer:

If there is no reject edit at the header level and at least one of the lines is accepted, then the record will be accepted. The encounter is valid and does not require a void or a replacement record to be submitted. In order to resubmit rejected lines, submitters can use the same header information and include only the corrected, previously rejected service lines. NOTE: Submitters should not submit previously accepted lines again, as they will be rejected as duplicates.