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Spotlight PEPPOL BIS Billing 3.0 The EU e-invoicing mandate is here — France Sept 2026, Belgium Jan 2026, Germany 2025.

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Foundations

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Standards

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Flagship messages

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Tools

X12 277 — Health Care Claim Status Notification

Status response returned by a payer. Two flavours: reply to an explicit 276 (TR3 005010X212), or unsolicited Claim Acknowledgment after receiving an 837 (TR3 005010X214).

Purpose

The 277 answers "where is this claim?". Depending on the TR3 in play it serves two different missions:

  • Standard 277 (X212) — reply to an explicit 276 sent by the provider.
  • 277CA Claim Acknowledgment (X214) — unsolicited notification sent by the payer or clearinghouse to confirm receipt of an 837 and detail its acceptance or front-end rejection prior to adjudication.

Envelope and structure

The 277 uses the standard triple X12 envelope with GS01 = HN. The TR3 in ST03 changes per use case. Example 277 responding to the 276 above:

x12 minimal-277.x12 
ISA*00*          *00*          *ZZ*PAYER99        *ZZ*PROVIDER01     *260513*1102*U*00501*000000277*0*P*>~
GS*HN*PAYER99*PROVIDER01*20260513*1102*1*X*005010X212~
ST*277*0001*005010X212~
BHT*0010*08*REQ-CSI-001*20260513*1102~
HL*1**20*1~
NM1*PR*2*PAYER99*****PI*PAYER99~
HL*2*1*21*1~
NM1*41*2*ACME CLINIC*****46*1234567890~
HL*3*2*19*1~
NM1*1P*2*ACME CLINIC*****XX*1234567890~
HL*4*3*22*0~
NM1*IL*1*DOE*JANE****MI*MEMBER12345~
TRN*2*TRACE-CSI-0001*9PROVIDER01~
STC*F1:65*20260507**620.00*620.00*0~
REF*EJ*CLAIM-REF-9911~
DTP*472*RD8*20260401-20260415~
SE*15*0001~
GE*1*1~
IEA*1*000000277~

Common segments (concept)

  • Header — BHT with purpose 08 (status info). The HL loops mirror those of the 276: Information Source, Information Receiver, Service Provider, Subscriber, Patient.
  • Detail — the core segment is STC Status Information, which carries the category code / status code pair (F1=Finalized/Payment, F2=Pending, F3=Returned, R7=Rejected, R20=Acknowledged…), the status date, and billed/paid amounts. REF for references (claim payer ID, patient account), DTP for the service window.
  • Summary — a single SE.

When you'll see it

The 277CA is the most valuable payer-side return for providers: it tells them within hours if an 837 was rejected for format or matching reasons (unknown NPI, patient mismatch). RCM systems (Athenahealth, Waystar, eClinicalWorks RCM) route 277s by rule: anything that is not "Accepted" (R7, R20 with rejection reason) triggers a corrective task before the timely-filing window closes.

Documentation