A Michigan Addiction PHP Program Wrote Off $274,000 Over 2 Years. We Reversed $196,000 of It.
Table of Contents
THE SITUATION
This addiction PHP had operated for six years. Write-offs were a routine part of month-end close denied claims that the billing team had reviewed briefly and posted as adjustments. The write-off total had never been audited.
The practice owner requested a 2-year write-off review as part of a broader RCM assessment. We audited $274,000 in write-offs.
We found that 71% had been written off for reasons that either had formal appeal grounds or involved payer errors not provider errors.
WHAT WAS ACTUALLY WRONG
BCBSM denial reason codes were being misread as hard denials:
BCBS Michigan uses a proprietary denial code set that doesn’t map directly to standard CO/PR/OA codes. The billing team was reading several BCBSM soft denials (correctable) as hard denials (final). $89,000 had been written off as uncollectible when the denial reason was actually ‘resubmit with updated clinical documentation’ a standard correctable denial.
Priority Health claims were written off at 120 days without checking priority’s 24-month appeal window:
Priority Health allows appeals up to 24 months from date of service. The billing team was writing off Priority Health claims at 120 days as a standard practice not knowing Priority’s extended appeal window. $67,000 in Priority Health claims were written off with 12–20 months of appeal window remaining.
$48,000 in write-offs were payer calculation errors, not billing errors:
Cross-referencing 36 months of BCBSM and Aetna remittances against contracted rates found $48,000 in claims that were processed at incorrect rates and posted as contractual adjustments meaning they were written off as contractual when they were actually underpayments. Contractual adjustments should reflect the actual contracted rate difference, not a payer calculation error.
WHAT WE DID
Weeks 1–2: Full write-off audit. Every entry reviewed denial reason, payer, date of service, appeal window, and write-off category. Sorted into: recoverable via appeal, recoverable via underpayment dispute, and genuinely uncollectible.
Weeks 3–6: Filed corrected claim submissions for all BCBSM soft-denial write-offs. Attached updated clinical documentation where required.
Weeks 4–8: Filed formal appeals with Priority Health for all claims within their 24-month window. Priority Health processed within 45 days.
Weeks 6–12: Filed underpayment disputes for $48,000 in BCBSM and Aetna calculation errors submitted remittance vs. contracted rate comparison documentation.
Ongoing: Built a write-off review policy no denial posted to write-off without confirming appeal window status and denial category.
THE RESULTS
| Metric | Before | After |
|---|---|---|
| Total Write-Offs Audited | $274,000 | N/A |
| Revenue Reversed and Collected | — | $196,000 |
| BCBSM Soft-Denial Reversals | $0 | $82,000 |
| Priority Health Appeals | $0 | $73,000 |
| Underpayment Disputes | $0 | $41,000 |
WHAT THIS MEANS FOR YOUR PRACTICE
2 year‑old write‑offs aren’t always gone. Some payers still allow appeals, corrections, and adjustments, making an annual write‑off audit one of the highest‑return activities for addiction treatment programs.