Transaction Types
Deep dives into specific X12 transaction sets — 837 claims, 835 remittance, COB scenarios, 278 prior auth, and more.
X12 278 Prior Authorization: Format, Fields, and Testing Guide
The complete guide to the X12 278 prior authorization request and response — loops, segments, scenario coverage, and how to test before go-live.
EDI 834 Enrollment File: Format and Testing Guide
A complete guide to the X12 834 benefit enrollment and maintenance transaction — structure, key segments, maintenance types, and testing strategies.
How to Test 270/271 Eligibility Transactions Before Go-Live
A complete guide to testing X12 270 eligibility inquiry and 271 eligibility response — structure, real-time vs batch, common failures, and test scenario coverage.
EDI 277 Claim Status: Format and Testing Guide
The X12 277 claim status transaction explained — 276 request, 277 response, status category codes, and how to test claim status workflows before go-live.
How to Test 837I Institutional Claims: A Complete Guide
Testing the X12 837I institutional claim — UB-04 equivalent fields, revenue codes, condition codes, occurrence codes, and inpatient vs outpatient scenarios.
HL7 ADT Messages: A01 through A08 Explained
A complete guide to HL7 v2 ADT messages — admit, discharge, transfer, merge — what each message type means, key segments, and how to test ADT workflows.
COB Claims Testing: How to Generate Coordination of Benefits Scenarios
COB claims are the most commonly undertested scenario in healthcare EDI — and the most common source of go-live failures.
How to Test 835 Remittance Reconciliation Before Go-Live
Most EDI go-live failures happen at the 835 — not the 837. A practical guide to testing remittance reconciliation before you touch production.