HMO-Related Master File Corrections

30.21.1 - HMO-Related Master File Corrections (Rev. 3441, Issued: 01-15-16, Effective; 12-31-13; ASC X12: 01-01-12, MAC Implementation: 02-16-16; ASC X12: 02-16-16) The A/B MAC (A), (B), or (HHH), or DME MAC will fully document and send to the HMO inquiries concerning problems with HMO data on the HI Master. The HMO will resolve the problem and advise the contractor of the results.