Document guide
837 healthcare claim guide
The 837 is the core healthcare claim transaction providers send to payers for adjudication.
What the 837 is
An 837 replaces paper claim forms with structured X12 loops for provider, subscriber, payer, service lines, and claim totals.
- 837P for professional claims
- 837I for institutional claims
- 837D for dental claims
Example segments
ST*837*0001*005010X222A1~ BHT*0019*00*CLAIM1042*20260504*1430*CH~ NM1*85*2*SIGNAL CLINIC*****XX*1234567893~ CLM*CLAIM1042*145.00***11:B:1*Y*A*Y*I~
Common errors
- Missing or malformed NM1 provider identifiers
- CLM amount mismatch
- Invalid payer or subscriber loop
- Control number mismatch
How SignalEDI handles it
- Detects envelope, ST, BHT, NM1, and CLM issues before send.
- Simulates 999/277 acknowledgement expectations in the public validator.
- Keeps claim lifecycle visible from sample validation through payer status.
Related paths
FAQ
- What is an 837 file?
- An 837 is an X12 healthcare claim sent by a provider to a payer.
- What comes after an 837?
- A payer or clearinghouse commonly returns 999 and 277 acknowledgements/status updates, followed by 835 remittance after adjudication.
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