Attachment J-1 DMDC Eligibility File Layout TMEP.pdf

This document is a technical specification for the Defense Manpower Data Center (DMDC) Crossover Eligibility File Layout, which defines the data structure and format requirements for transmitting beneficiary eligibility information.

The file layout consists of three sections: header, detail, and trailer records, each with fixed-field positions spanning 153 characters total. The header record includes a default indicator ("H"), file date in YYYYMMDD format, and filler space. The detail section contains 24 data elements capturing personal identification information (DOD EDI PN ID, Person ID, Person ID Type Code, sex code, birth date), sponsor information (Sponsor Person ID and Type Code), service code, and finder status code. Additional fields document Medicare beneficiary information including the Medicare Beneficiary Identifier, beneficiary name components (first, middle initial, last name), cadency, and comprehensive Medicare Part A entitlement data (entitlement start dates, termination dates, status codes, and entitlement reason codes with change dates). All date fields use YYYYMMDD format. The trailer record contains a default "T" indicator, file date, and record count for validation purposes, with remaining space designated as filler. This standardized layout enables consistent data exchange between systems processing military beneficiary eligibility determinations.