What is accounts receivable in medical billing?

Accounts receivable in medical billing is the total outstanding amount owed to a practice for services delivered but not yet collected, including amounts pending from payers and patients. It is tracked in aging buckets from 0-30 days through 90-plus days. Days in AR, the average number of days to collect after service delivery, is the most useful summary metric of revenue cycle health. A target of under 40 days indicates a well-functioning billing operation.

What is days in AR and what is a good benchmark?

Days in AR measures how long it takes on average to collect after service delivery, calculated by dividing total AR by average daily charges. A healthy benchmark is under 40 days. High-performing practices achieve 30 to 35 days. Days in AR above 50 indicates a systemic billing problem. Above 60 signals denial management failures or AR that has been allowed to age without intervention. Qualigenix averages a 36-day collection cycle across client practices.

What causes AR to age in medical billing?

AR ages when claims are not actively followed up, when denials sit unworked past appeal windows, when payment posting is delayed so AR doesn’t reflect actual collections, when secondary claims aren’t submitted promptly, and when patient balances aren’t followed up systematically. These are all workflow failures rather than capacity problems. Adding staff to a broken process produces marginal improvement. Fixing the process produces larger improvement at no additional cost.

How does payment posting speed affect days in AR?

Delayed payment posting inflates AR by keeping paid claims on the outstanding balance report, distorting follow-up prioritization and making AR data unreliable for management decisions. A 48-hour posting standard keeps AR data current and triggers secondary billing and patient statements on a predictable schedule. Practices posting weekly are making every follow-up decision based on data that is 5 to 10 business days stale, which means they’re contacting payers about claims that are already resolved and missing accounts that genuinely need attention.

What is the 90-day AR threshold and why does it matter?

The 90-day threshold is the point at which AR collection probability drops to approximately 20%. Every dollar past 90 days without active intervention is moving toward write-off. Practices should make an explicit decision on every account crossing 90 days: escalate to a collection partner, write off as bad debt, or authorize a final appeal investment. Allowing accounts to sit passively past 90 days is not a neutral choice. It is a decision to let collectible revenue deteriorate without extracting any of the remaining option value.

How does denial management affect accounts receivable in medical billing?

Unworked denials are the single largest contributor to AR aging. A denied claim stays in AR until it is recovered or written off, and approximately 60% of denied claims are never reworked. Those balances age through the AR buckets and become write-offs that could have been avoided. A 72-hour denial working standard with root cause routing by denial reason code is the process change that has the most direct and immediate impact on days in AR in most practices.

How can a practice reduce days in AR without hiring more staff?

Reducing days in AR without adding staff requires fixing specific workflow inefficiencies: 48-hour payment posting, automatic secondary billing on primary adjudication, 72-hour denial working with root cause routing, tiered AR follow-up by aging bucket and dollar value, 5-day patient statement turnaround, and weekly AR aging reviews with escalation decisions at the 90-day threshold. Each change redirects existing staff effort toward the actions that produce the most AR improvement rather than adding volume to an inefficient process.

What percentage of AR should be in the 0-30 day bucket?

A well-run practice keeps 65% to 75% or more of total AR in the 0-30 day bucket. When this percentage drops below 60%, AR is accumulating in older buckets, which signals claim submission delays, unworked denials, or insufficient follow-up. Monitoring the AR aging distribution weekly rather than just tracking the total AR dollar amount gives earlier warning of deteriorating performance than waiting for days in AR to tick up in the monthly report.

What is secondary billing and how does it affect AR?

Secondary billing submits a claim to a patient’s secondary insurer after the primary payer adjudicates, and delays in it are a consistent source of AR aging in the 31-to-60-day bucket. For practices with high Medicare patient panels and Medigap coverage, secondary billing delays inflate AR unnecessarily. Automatic secondary billing triggered by payment posting eliminates this delay entirely and frees staff time for denial management, which has a compounding positive effect on days in AR.

Accounts Receivable In Medical Billing: How to Reduce Days in AR Without Hiring More Staff

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