# Submit Claim Attachment JSON
Source: https://www.stedi.com/docs/healthcare/api-reference/post-healthcare-submit-claim-attachment

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openapi: claims post /claim-attachments/submission
title: Submit Claim Attachment JSON
-----------------------------------

<Warning>
  This endpoint is in **beta** and is subject to change.
</Warning>

This endpoint submits a 275 claim attachment to a payer.

1. Call this endpoint with the required information to [link the attachment](/healthcare/submit-claim-attachments#reference-attachments-in-a-claim) to the correct claim.
2. Stedi generates the X12 EDI 275 transaction and sends it to the payer.
3. The endpoint returns summary information about the submission.

This endpoint is for 837 claims submitted in JSON format. If your system already generates X12 EDI, you can send attachments through the [Submit Claim Attachment (275) Raw X12](/healthcare/api-reference/post-healthcare-submit-claim-attachment-raw-x12) endpoint instead.

This endpoint only supports [unsolicited attachments](/healthcare/submit-claim-attachments#solicited-vs-unsolicited-attachments).

<Note>
  Visit [Claim attachments](/healthcare/submit-claim-attachments#json-apis) for a
  full how-to guide.
</Note>