X12 837P SBR04 (Insurance Plan Name or Program Name): Format, Values, and Testing Notes
SBR04 is technically optional in the base standard, but plenty of clearinghouses and payer companion guides expect it populated anyway — leave it blank in test data and you never find out until a real submission gets kicked back for a companion-guide violation the standard itself doesn't require.
SBR04 is the Name element in an X12 837P claim — free text carrying the insurance plan name or program name associated with the coverage in that SBR loop.
What this element contains
Example
ACME REGIONAL HEALTH PLAN is SBR04, the insurance plan name tied to this subscriber's coverage. Synthetic claim data.
Where this trips people up
Test data generators that either omit SBR04 entirely or truncate long plan names inconsistently produce claims that pass the base X12 syntax check but fail a specific payer's companion guide edit — and because the base standard doesn't require SBR04, that failure often gets misdiagnosed as a payer-side bug instead of a test data gap.