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MedClaimSoftware Support · Step-by-step help

837P Electronic Claims Help

Prepare a professional electronic claim file, review it, submit through your existing connection, and understand acknowledgements and corrections.

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Important: MedClaimSoftware creates an 837P professional claim file; it does not transmit claims directly to payers or clearinghouses. Submit through the payer, clearinghouse, Medicare contractor, billing service, or other electronic connection you already use.

From claim entry to electronic submission

  1. Enter the claim information. Open the CMS-1500 / 837P program and review patient, subscriber, provider, payer, diagnosis, and service-line entries for completeness.
  2. Validate the claim. Resolve any missing or invalid fields the program flags. A locally valid file can still fail external payer or clearinghouse checks.
  3. Create the 837P file. Use the program's electronic filing/export workflow to generate your 837P file. Note the location where you saved it.
  4. Review before submission. Use the 837P Validator & Viewer for a readable first-pass check. Follow the submission partner's current companion guide and any payer-specific requirements.
  5. Submit externally. Upload or transmit the file through your clearinghouse or other existing electronic claims channel. Keep any submission/reference ID securely.
  6. Check acknowledgements and claim status. Read the response information supplied by your submission partner. A positive acknowledgment does not necessarily mean the claim has been adjudicated or paid.

Understanding responses and rejections

  • 999: Commonly reports whether an EDI transaction passed or failed syntax/implementation acknowledgment checks.
  • 277CA: Can identify claim-level acceptance or rejection status after front-end processing.
  • Payer response: Acceptance by one processing stage does not guarantee final payer adjudication. Follow the status reported by your submission partner.

To review response files in a readable format, use the free 999 / 277CA Response Reader. See also our post-submission workflow guide.

Common problems and next steps

My claim is missing a required field.

Review the field identified by the software, including the relevant provider identifiers, subscriber details, diagnoses, and service lines. Correct the underlying record, then validate and export again.

The clearinghouse rejects a file that passed local validation.

Review the exact rejection from the clearinghouse and its companion guide. External validators may enforce payer-specific rules that local software cannot know. Fix the claim and follow your partner's resubmission process.

How do I read a 999 or 277CA?

Use the response reader and the clearinghouse's explanation of its acceptance rules. Locate the rejected transaction or claim control number before making corrections.

Does an accepted 837P file mean I will be paid?

No. Technical or front-end acceptance and final claim adjudication are separate steps. Continue checking your submission partner and payer systems for claim outcomes.

Patient privacy: Electronic claim files can contain protected health information. Do not attach live 837P files or unredacted payer responses to an ordinary support email. Describe the error and share a de-identified example when possible.