EDI 837 / 835 (electronic claim and remittance)
Two HIPAA-standard electronic data interchange (EDI) transaction sets that form the backbone of electronic healthcare billing. The 837 (Health Care Claim) is the electronic format for submitting claims to payers. The 835 (Health Care Claim Payment/Advice) is the electronic remittance advice payers use to communicate payment decisions back to providers. Together, 837 and 835 are the standards that enable automated, paperless claim submission and payment posting between practice management systems, clearinghouses, and payers.
Why this matters for your clinic
HIPAA mandates 837 and 835 format use for covered entities submitting electronic claims to covered payers. Practices that are not fully utilizing electronic 837 submission and 835 ERA receipt are doing unnecessary manual work. Paper claims take longer to process, are more prone to entry errors, and slow AR. Payers are required to accept 837 claims and produce 835 remittance for providers who request electronic transactions.
The 835 file is the raw data source for automated payment posting and revenue cycle analytics. Practices that have a clearinghouse route 835 files into their practice management system can automate payment posting and extract denial reason codes for analytics. Practices still posting from paper EOBs are losing both efficiency and analytical capability.
837 and 835 file validation is a technical component of claim scrubbing and payment reconciliation. EDI syntax errors in an 837 file prevent the claim from being accepted by the clearinghouse or payer. An 835 that does not parse correctly in the practice management system causes posting failures. Understanding that these are structured data files, not free-form documents, helps billing leadership troubleshoot interface and posting problems.
What good looks like
HIPAA Transaction and Code Set rules (45 CFR Part 162) mandate the 837 and 835 transaction standards for covered entities. CMS publishes 837 and 835 companion guides for Medicare claims. CAQH CORE Operating Rules set baseline requirements for electronic transaction exchange that most commercial payers follow.
Example
A group practice submits 2,500 claims per month. All 2,500 are formatted as 837 electronic claims and sent through a clearinghouse, which scrubs them and routes them to payers. Payers adjudicate and return 835 remittance files within 14-30 days. The clearinghouse passes the 835 files to the practice management system, where they auto-post to patient accounts. The full claim-to-payment cycle runs without manual intervention for approximately 92% of claims. The billing team's work is focused on the 8% of claims that require exception handling from the automated 835 posting process.
From Sorso
Full EDI automation for 837 submission and 835 posting is table stakes for any practice above two providers. The practices we onboard that are still using paper claims or posting from paper EOBs are spending two to three times as much billing staff time per claim as fully automated practices, and their AR is longer as a result.
Founder of Sorso. 19 years in corporate finance. Managed a $450M loan portfolio before building a fractional CFO firm exclusively for healthcare clinics.
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