Write-off (contractual adjustment)
A reduction in accounts receivable that removes an amount from your books that will not be collected. Write-offs fall into three distinct categories: contractual adjustments (the agreed-upon difference between your billed charge and the payer's allowed amount), bad debt (uncollectable patient balances after reasonable collection effort), and discretionary or administrative write-offs (adjustments made outside normal processes, which require careful oversight). Each type has different financial and compliance implications.
Why this matters for your clinic
Not all write-offs are created equal, and conflating them is one of the most common financial reporting errors in medical billing. Contractual adjustments are expected and normal. Bad debt write-offs after exhausting collection effort are unfortunate but legitimate. Administrative or discretionary write-offs made without proper authorization are where revenue leakage hides and where compliance exposure begins.
The danger with miscoded write-offs is that they make your net collection rate look artificially high. If a billing team writes off an underpayment as a contractual adjustment rather than working the appeal, the dollars disappear from AR without ever appearing as a denial or a rework item. Management never sees it. Over hundreds of claims, this can amount to significant undetected revenue loss.
Write-off authority should be tiered and documented. Contractual adjustments can be automated based on payer fee schedules. Bad debt write-offs above a threshold should require supervisor approval. Discretionary write-offs should require both a clinical or administrative justification and sign-off from practice leadership. Practices without clear write-off authorization policies are at risk of both revenue leakage and compliance problems.
What good looks like
HFMA MAP Keys track write-off categories separately as part of a healthy revenue cycle. Denial-related write-offs (claims written off without working the appeal) are a watchdog metric worth tracking separately. Best-practice guidance treats any write-off not generated by the automated contractual adjustment posting process as requiring human review and authorization. Practices should audit a random sample of non-contractual write-offs monthly.
Example
A practice bills $200 for a visit. The allowed amount under the patient's plan is $140. After the payer pays $112 (80%), the patient owes $28 (20% coinsurance). The $60 difference between billed and allowed is a contractual adjustment write-off, which is correct and expected. But if the payer only pays $100 instead of $112, and the billing team writes off the full $100 gap as a contractual adjustment without checking the EOB, the practice just lost $12 it was contractually owed and has no record of the error.
From Sorso
In the practices we take on, administrative write-offs are almost always the first place we find undiscovered revenue. Implementing a simple three-tier write-off authorization policy typically recovers 1-2% of net revenue in the first 90 days.
Founder of Sorso. 19 years in corporate finance. Managed a $450M loan portfolio before building a fractional CFO firm exclusively for healthcare clinics.
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