An Ohio ABA Network Was Losing $47,000 a Month to Auth-Related Denials. The Fix Took 5 Weeks.
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THE SITUATION
Four-clinic ABA network, 18 BCBAs, serving approximately 210 active patients across Central Ohio. They were busy, but their billing reports told a different story than their census numbers suggested.
The denial rate had climbed from 11% to 29% over eight months. The practice owner flagged it in a monthly financial review and traced it back to one denial code dominating the EOBs: CO-15 authorization number missing or invalid.
They called us two days later.
WHAT WAS ACTUALLY WRONG
We pulled 90 days of claims and cross-referenced every CO-15 denial against the authorization log. The pattern was immediate.
Authorizations were expiring mid-treatment without renewal requests. ABA authorizations from Anthem and Medical Mutual typically run 90–180 days. When an auth expired, the front desk wasn’t flagging it claims were submitting against an expired auth number and denying on receipt. At 210 active patients with rolling auth windows, this was happening continuously.
OhioRISE Medicaid had changed its re-authorization submission window in Q1 2024. The new requirement: re-auth requests must be submitted 30 days before expiration, not 14. The practice was still submitting at 14 days. OhioRISE was denying re-auth requests as untimely, leaving a 16-day billing gap per patient per cycle.
Rethink BH wasn’t configured to flag expiring authorizations. The EHR has an authorization expiration alert feature. It had never been turned on. Staff had no visibility into upcoming expirations without manually checking each patient record.
WHAT WE DID
Week 1: Turned on the authorization expiration alert in Rethink BH across all four locations. Set alerts at 45 days, 30 days, and 15 days before expiration. Assigned a dedicated auth coordinator role at each clinic not front desk, dedicated.
Week 2: Audited every active patient’s authorization status. Found 63 patients mid-treatment with expired or expiring auths. Submitted re-authorization requests for all 63 in five business days.
Weeks 3–4: Contacted OhioRISE provider relations, confirmed the new 30-day submission window, and submitted a batch retroactive appeal for the 16-day gap periods. OhioRISE approved appeals for 78% of affected claims.
Week 5: Resubmitted all CO-15 denials still within filing windows. Built an authorization tracking dashboard outside the EHR as a backup cross-reference updated weekly.
THE RESULTS
| Metric | Before | After (8 Weeks) |
|---|---|---|
| Auth-Related Denial Rate | 29% | 6% |
| Monthly Revenue Restored | — | $47,000 |
| Active Patients with Expired Auths | 63 | 0 |
| OhioRISE Gap Appeal Recovery | $0 | $29,400 |
| Auth Tracking Process | Manual/none | Automated + dedicated coordinator |
The denial rate dropped to 6% within eight weeks. $29,400 recovered from OhioRISE retroactive appeals. Monthly revenue restored: $47,000.
WHAT THIS MEANS FOR YOUR PRACTICE
Manual authorization tracking breaks down in large ABA practices. If you’re managing 100+ patients without alerts, expired authorizations are likely costing you revenue.