Medicare Claims Processing Manual (Pub. 100-04), Ch. 31 § 20.4
Translation Requirements
20.4 - Translation Requirements
(Rev. 2937, Issued; 04-25-14, Effective: 04-14-14, Implementation: 04-14-14)
For the current ASC X12 276/277 claim status request and response transactions and
beyond inclusive of any adopted Errata by ASC X12, contractors and shared system
maintainers shall exchange ASC X12 claim status request and response transactions
using the Extended Character Set. except when a CMS and the contractors have deemed
to be data scrubbed under the initial instructions for the outbound data scrubbing as
contained in Transmittal 702, Change Request 6946 and the modifications through
subsequent releases, as directed via future Change Request. Detailed information about
the Extended Character Set can be obtained in Appendix B of any ASC X12 TR3.