Search current National Provider Identifier (NPI) records using our advanced NPI Lookup tool
Searchable Payer id code list - Comm, BCBS, MDCR, MDCD
Explore each field’s purpose and see precise X12 837P 5010 mappings with real code examples
Explore the ICD-10-CM code list with our advanced search tool
Browse a categorized list of ICD-10-CM codes organized by chapters based on body systems or medical conditions
Verify the validity of 10 & 15 position NPI numbers
Popular resource tools:
Learn how the GS and GE segments form the functional group envelope in the X12 837 4010 claim format. Includes a sample GS/GE loop, control number rules, and field-by-field breakdown.
Learn how the GS and GE segments form the functional group envelope in the X12 837 5010 claim format. Includes a sample GS/GE loop, control number rules, and field-by-field breakdown.
Learn how ISA and IEA segments form the interchange control envelope in X12 837 (5010) transactions. Includes sample EDI, field-by-field tables, and validation tips.
Learn how ISA and IEA segments form the interchange control envelope in X12 837 (4010) transactions. Includes sample EDI, field-by-field tables, and validation tips.
Learn about the MAO-001 Encounter Data Duplicates Report, which lists duplicate encounters and lines identified by CMS EDPS. Includes report layout, sample file, error codes, and best practices for Medicare Advantage Organizations.
Learn how to read and use the Medicare MAO-002 Encounter Data Processing Status Report, including updated RA fields (May 2022), table layout, flat-file example, and best practices for reconciliation.