When a practice asks eBillRCM to “fix coding,” eligibility denials often turn out to be registration failures. Wrong member IDs, terminated coverage, and missing auths reject claims before a coder can help.
Watch CO-27 (expenses after coverage terminated), CO-31 (patient not identified as insured), and CO-26 (expenses before coverage effective). They cluster on new patients, mid-year plan changes, and Medicaid redetermination seasons.
Verify per visit — not once a month
Batch eligibility is better than nothing and worse than real-time or same-day checks at scheduling and again near the visit. Coverage can terminate overnight after a premium miss. Catching that before the encounter prevents an unbillable visit.
Match the payer’s demographics exactly
CO-31 is frequently a mismatch on name, date of birth, or member ID — not true uninsured status. Hyphens, nicknames, and transposed digits drive it. Copy IDs from the card image and confirm spelling with the patient rather than trusting last year’s chart alone.
Auth and referral stops belong in intake
An active eligibility response is not authorization. Imaging, specialty visits, and many therapies still need auth numbers on the claim. Put hard stops on appointment types that historically require auth for your top payers.
A 30-day target state
- 1Eligibility at scheduling plus a re-check within 24 hours of the visit
- 2Card images reviewed for member ID accuracy
- 3Weekly CO-26/27/31 report with front-desk coaching notes
- 4Auth-required flags on high-risk appointment templates
Clean registration cuts first-pass denials before appeal templates matter. That is where eBillRCM starts most revenue audits — intake quality alongside coding quality.