POST
/
claim-attachments
/
raw-x12-submission
curl --request POST \
  --url https://claims.us.stedi.com/2025-03-07/claim-attachments/raw-x12-submission \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "x12": "ISA*00*          *00*          *ZZ*STEDI          *ZZ*CIGNA          *250227*2140*^*00501*000000001*0*T*>~GS*PI*STEDI*CIGNA*20250227*214016*1*X*005010X210~ST*275*1001*005010X210~BGN*11*0001*20060915~NM1*PR*2*CIGNA*****XV*62308~NM1*41*2*XYZ SERVICES*****46*1999999976~NM1*1P*2*THE HOSPITAL*****XX*3999000B01~NX1*1P~N3*123 Main~N4*Miami*FL*11111~NM1*QC*1*DOE*JOHN*J***MI*987654320~REF*EJ*DOE123~REF*EA*AAAAA12345~DTP*472*D8*20060812~LX*1~TRN*2*1822634840~STC*R4>18626-2>>LOI~DTP*368*D8*20060915~CAT*AE*TX~EFI*05~BIN*8*U3RlZGk=~SE*20*1001~GE*1*1~IEA*1*000000001~"
}'
{
  "tradingPartnerServiceId": "PAYER123",
  "claimAttachmentReference": {
    "correlationId": "att-123456",
    "patientControlNumber": "PCN123456",
    "timeOfResponse": "2025-03-07T12:34:56Z"
  },
  "meta": {
    "traceId": "4d2b3c4e-1111-4222-b333-5a6f7e8d9a00"
  }
}

This endpoint is in beta and is subject to change.

This endpoint submits a 275 claim attachment to a payer in raw X12 EDI format. This is ideal if you have an existing system that generates X12 EDI files and you want to send them through Stedi’s API.

  1. Call this endpoint with a payload in 275 X12 EDI format.
  2. Stedi sends the attachment to the payer, so the payer can use it to adjudicate the referenced 837 professional, dental, or institutional claim.
  3. Stedi returns summary information about the attachment submission.

This endpoint only supports unsolicited attachments.

​
Size limit

The size limit for attachments submitted in a single request is 6MB. If you need to submit larger attachments, you must submit them through Stedi SFTP or the JSON endpoints.

​
Payer ID

You must submit a payer identifier in Loop 1000A NM109. This identifier must be an official Payer ID or alias listed in the Payer Network. Stedi uses this ID to route the claim attachment to the correct payer.

For example, you could use 60054, HPQRS, AETNA, or any other listed alias for Aetna.

Authorizations

​
Authorization
string
header
required

A Stedi API Key for authentication.

Body

application/json

Request to submit a raw X12 claim attachment

Response

200
application/json

SubmitClaimAttachmentRawX12 200 response

Response from submitting a raw X12 claim attachment