What Accounts Receivable Management Services Actually Do (And What Your AR Aging Report Isn't Telling You)

A practice manager at a mid-sized internal medicine group was proud of their 4.8% denial rate. Their billing vendor sent a monthly report every third Friday: clean claim rate above 95%, denial rate under 5%, payments posting on schedule.

What the report didn't show was the aging bucket.

The 90-plus-day column on their AR aging report had been growing quietly for eleven months. By the time a new office administrator pulled the raw data instead of reading the summary, there was $412,000 sitting in the 120-plus-day bucket, spread across 14 payers, with the largest chunks sitting in Medicare Advantage and one commercial plan that had been denying the same CPT modifier combination since October. Some of those claims were past timely filing. Most had never been worked.

The billing vendor's dashboard didn't lie. It just showed the numbers that made the dashboard look good.

Accounts receivable management services are the operational processes, whether in-house or outsourced to a specialized RCM firm, that track, follow up on, and recover unpaid claims and patient balances after a claim has been submitted. The goal is clear: collect what you've billed, as quickly as possible, with as little written off as possible. What actually happens in most billing operations is more complicated.

What accounts receivable management is, and what it is not

Healthcare accounts receivable (AR) is any amount owed to your practice for services already rendered. That includes insurance reimbursements still in adjudication, denied claims under appeal, and patient balances after insurance has paid.

Managing it sounds like one job. It is actually two very different jobs with different workflows, different timelines, and different recovery strategies.

Most billing operations report a single AR figure. Practices that manage these two populations as one undifferentiated pile tend to systematically under-collect on both, because the tactics for working a Medicare Advantage denial are not the tactics for working a patient balance that's been sitting since a high-deductible plan applied.

The AR aging report: what you should be reading, and what most vendors send instead

An AR aging report shows your outstanding receivables bucketed by how long they've been unpaid: current, 31–60 days, 61–90 days, 91–120 days, and 120-plus. Most billing vendors produce one of these. Fewer actually use it operationally to drive follow-up priority.

The questions worth asking when you look at yours:

• Is the 120-plus-day bucket growing month over month, or stable?
• How much of the 120-plus-day bucket is insurance AR versus patient AR?
• What percentage of the 90-plus-day claims have at least one documented follow-up action in your system?
• Which specific payers are overrepresented in the 90-plus bucket?
• How much of the oldest AR was denied, how much was never adjudicated, and how much is sitting on patient responsibility?

If your vendor can't answer questions four and five off the AR aging report, the report they're sending you is a snapshot, not a working tool. The purpose of the aging report isn't to document how old your receivables are. It is to trigger the right action on each claim at the right time, before the opportunity to recover it closes.

The metrics that actually measure AR management performance

Days in AR (also called DSO, or days sales outstanding) is the most commonly cited AR metric. It measures how long it takes, on average, to collect payment after a service is rendered.

But like the denial rate, it can be gamed through write-offs. If you write off your oldest and hardest claims, your average days in AR looks better. The balance sheet looks cleaner. Revenue is just gone.

The full picture requires a set of metrics used together:

A billing vendor reporting only DSO and clean claim rate is giving you two of eight metrics. The net collection rate and the 90-plus-day percentage together tell you far more about the health of your AR than either of those two numbers alone.

How insurance AR management works, and where most operations fall short

Insurance AR management is the ongoing process of following up on submitted claims that haven't been paid, identifying why, and taking the appropriate action to get them paid.

The failure mode in most billing operations isn't that claims don't get followed up on. It's that follow-up is reactive, manual, and undifferentiated. A biller works the aging report in date order. Older claims get worked; newer ones wait. Payer-specific timely filing windows aren't tracked per claim. When a claim has been denied and needs a formal appeal, it sometimes gets a follow-up call instead. When it needs a corrected claim resubmission, it sometimes gets an appeal letter instead. The wrong action on the right claim is the same as no action.

High-performing insurance AR management looks like this:

1. Work queue prioritization by recovery probability and deadline. Claims within 30 days of a payer's timely filing window get worked first, regardless of age. High-dollar claims get worked before low-dollar claims at the same age. Denials that require a formal appeal get routed to the appeals team, not to a general follow-up queue.
2. Payer-specific follow-up protocols. Calling Cigna about a behavioral health claim requires different documentation than calling Aetna about an outpatient physician claim. The biller working that claim should know what the payer needs before placing the call.
3. Claim status checked before the follow-up call. A significant share of "aged" claims are actually in adjudication and not yet past their normal processing window. Working them wastes time. Automated eligibility and claim status checks narrow the follow-up queue to claims that actually need human intervention.
4. Documentation of every action in the claim record. If a claim gets to 120 days with no documented follow-up activity, that's a workflow failure, not a payer problem. Documentation also builds the appeal record if a claim ends up in escalation.

For behavioral health and psychiatry practices, prior authorization and medical necessity denials drive a disproportionate share of insurance AR aging. Payers like Cigna (through Evernorth Behavioral Health, its health services subsidiary) and UnitedHealthcare/Optum apply payer-specific medical necessity criteria to mental health services that can be more restrictive than criteria applied to comparable medical services, and their claims adjudication timelines can run longer. Our guide to why mental health claims get denied goes into the payer-specific patterns in detail.

The part of AR management nobody talks about: patient AR

Patient AR has grown as a share of total practice receivables over the past decade, driven by the spread of high-deductible health plans and rising patient cost-sharing. The average single-coverage deductible reached $1,886 in 2025 (Kaiser Family Foundation Employer Health Benefits Survey), meaning more of every patient encounter is coming directly from the patient rather than the payer.

That matters for AR management because patients behave differently than payers. A payer denial can be appealed through a defined process with defined timelines. A patient who owes $800 after their deductible is applied may not understand the bill, may not have the money, or may have fallen out of contact.

The tools for working patient AR are different from the tools for working insurance AR:

• Statement timing matters. Patients who receive a statement within 30 days of the explanation of benefits (EOB) pay at higher rates than those who receive one 90 days later. Many billing operations send patient statements on a monthly cycle regardless of when the balance was created.
• Payment plans reduce write-offs. A patient who can't pay $800 in one payment may be able to pay $100 per month. Practices without a structured payment plan process lose more of this balance to write-off than they should.
• Financial counseling at point of service reduces downstream AR. Patients who understand their expected cost-sharing before a visit are more likely to pay promptly after one.
• Collection agency referral has a threshold. Turning a $150 patient balance over to a collection agency is typically not worth the recovery split. Having a clear threshold and a process for writing off small, genuinely uncollectible balances prevents the patient AR queue from being clogged with accounts that will never move.

The connection between AR management and denial management most billing vendors miss

Insurance AR aging and denial management are treated as separate workflows in most outsourced billing operations: one team submits claims and posts payments, another works denials, and the AR aging report lives somewhere between them.

The problem is that the two are not separate. A denied claim is also an aging AR claim. The denial rate metric counts the denial when it occurs. The AR aging metric counts the same claim again when it sits unpaid at 90 days. If the denial doesn't get appealed and resolved, it becomes a write-off, which shows up in the net collection rate. All three metrics are tracking the same claim at different points in its lifecycle.

Practices that manage these as integrated rather than parallel workflows catch the connection that the division misses: a specific CPT code generating a modifier denial on a specific payer at 90 days was also generating the same denial at 30 days, and again at 60 days. By the time it shows up in the 90-day aging bucket, the pattern has been running for months. Integrated denial and AR management identifies the pattern when the first denial hits, fixes the upstream coding issue, and prevents the AR from accumulating.

Our healthcare denial management guide covers the denial side of this loop in detail, including how payer-specific appeal requirements differ and which denial categories generate the most recoverable AR.

When outsourcing accounts receivable management makes operational sense

The in-house versus outsourced AR management decision comes down to three questions: whether you have the staff to work the AR consistently without falling behind, whether your team has the payer-specific knowledge to work denials and appeals effectively, and whether the cost of carrying aging AR exceeds the cost of an outsourced partner.

Most practices that reach out about AR management have at least one of these problems:

• AR over 90 days represents more than 25% of total receivables
• The billing team is submitting claims and posting payments, but nobody is systematically working the aging report
• The practice has changed billing systems, billing vendors, or grown significantly in the past 12 months, and old AR from the transition was never fully worked
• Denial appeal activity is low and write-offs are growing

A good outsourced AR management partner does not just call the payer and document the call. They categorize denial root causes, track payer-specific timely filing windows, file appeals with payer-appropriate documentation, and report the outcomes back at a claim level, not just as a summary percentage.

If you are evaluating whether your current billing operation is the right fit, the questions in our in-house vs. outsourced billing comparison and our guide to questions to ask before hiring a medical billing company give you the full evaluation framework.

For hospital and facility billing, the AR dynamics differ: larger claim volumes, more complex payer mixes, and Medicare-specific AR rules add layers that don't apply to most outpatient physician practices. Our hospital revenue cycle management guide covers those specifics.

The operational questions worth putting to your billing team now

Whether your AR management is in-house or outsourced, these are the questions that reveal what the process actually looks like:

• What percentage of our 90-plus-day insurance AR has documented follow-up activity in the system?
• What is our net collection rate over the past 12 months?
• What percentage of total AR is 90-plus days, and has that percentage changed in the past six months?
• How are patient balances worked differently from insurance AR? What is our payment plan rate?
• When a denial creates an aging claim, who owns the appeal workflow?
• What is the threshold at which a claim is written off versus escalated?

A billing team with solid AR management can answer these with actual data from your account within a day. Vague answers or answers that restate the process in general terms suggest the data isn't being tracked at that level.

About Clarity Health RCM

Most content on accounts receivable management services in healthcare describes the function accurately enough. What it rarely does is explain the operational mechanics that separate a billing operation with a 35-day DSO and a 10% 90-plus rate from one with a 65-day DSO and a 28% 90-plus rate, even when both claim to offer "comprehensive AR management."

Clarity Health RCM is led by President and CEO Estelle Sandoval, who has worked revenue cycle operations since the late 1980s. With 40-plus years of combined experience across the firm, the AR patterns, metric benchmarks, and payer-specific dynamics described in this article reflect direct operational work across behavioral health practices, multi-specialty outpatient physician groups, inpatient physician billing, and acute care and community hospital billing.

The results are quantifiable: in behavioral health and IOP/PHP engagements, our team has brought denial rates from 22% down to 6%. In inpatient physician billing, denial rates dropped from 45% to under 5% within a single quarter. AR over 90 days fell from 38% to 11% in one behavioral health engagement. Across client accounts, our team has recovered more than $5 million in claims prior billers had written off.

Industry benchmarks cited in this article draw from HFMA MAP Keys metric definitions and published industry consensus figures (MGMA, HFMA MAP App). Specific threshold values should be validated against current HFMA MAP App benchmarking data for your provider type and setting, as performance ranges vary by specialty and shift over time.

How Clarity Handles Accounts Receivable Management

The pattern illustrated at the opening of this article: significant aged AR accumulating in the 120-plus-day bucket while a vendor dashboard shows clean numbers. We see it regularly when a practice transitions to Clarity after years with a prior billing vendor.

What those situations share: the AR wasn't invisible because the billing vendor was hiding it. It was invisible because the reporting was built around the metrics that made the operation look good, not the metrics that told the practice what was actually happening to their money.

Clarity's approach integrates AR follow-up, denial management, and coding audits inside the same operation. The team working your 90-plus-day insurance AR is the same team reviewing denial root causes and feeding patterns back to the front-end workflow. Patient AR and insurance AR are tracked separately, worked with separate protocols, and reported separately so you can see exactly where aging is concentrated.

We work with behavioral health and psychiatry practices, multi-specialty outpatient physician groups, inpatient and outpatient physician billing, and acute care and community hospital billing. If your AR is trending in the wrong direction, or if you're not certain, we're available to review your aging report and tell you what we see.

Frequently Asked Questions

What are accounts receivable management services in healthcare?

Accounts receivable management services in healthcare are the operational processes for tracking, following up on, and recovering unpaid insurance claims and patient balances after services have been rendered. These services include insurance claim follow-up, denial appeal management, patient statement and payment plan management, AR aging analysis, and reporting on collection performance. They may be managed in-house by a billing team or outsourced to a specialized revenue cycle management firm.

What is a good days in AR (DSO) benchmark for medical practices?

Days in AR (DSO) under 40 days is the standard target for a well-managed outpatient physician practice. High-performing practices typically achieve 30 to 35 days or lower. DSO alone is not sufficient to assess AR management health: a practice that writes off aged claims aggressively can show a low DSO while actually losing significant revenue. Net collection rate (what you collect versus what you're contractually owed) and the percentage of AR over 90 days provide a more complete picture.

What percentage of total AR should be over 90 days?

Industry benchmarks suggest that AR over 90 days should represent 20% or less of total accounts receivable for a well-managed billing operation. Practices with AR over 90 days above 25% typically have either a systematic denial follow-up problem, a staffing constraint preventing timely claim follow-up, or unresolved AR from a billing transition. The 120-plus-day bucket is particularly important to monitor, as claims in that range are at higher risk of being past timely filing windows for some payers.

What is the difference between gross and net collection rate?

Gross collection rate is the percentage of total billed charges collected; it varies widely by specialty and payer mix because contracted rates are always below billed charges. Net collection rate is the percentage of contractually allowed charges actually collected, after adjustments. Net collection rate is the more meaningful performance indicator: it measures how much of what you're contractually entitled to collect is actually being collected. A net collection rate below 95% typically indicates that claims are being written off before they're fully worked, or that denial follow-up is leaving recoverable revenue on the table.

How do accounts receivable management services differ from denial management?

Denial management focuses specifically on claims that have been adjudicated and denied: categorizing denial reasons, filing appeals, and using denial pattern data to prevent future denials. AR management is broader: it encompasses all unpaid balances, including claims still in adjudication, underpaid claims, denied claims under appeal, and patient balances. The two overlap significantly because denied claims become aging AR claims, and AR that ages past timely filing windows often results from denials that weren't appealed in time. The most effective billing operations manage denial management and AR follow-up as integrated rather than separate workflows.

When should a practice outsource accounts receivable management?

Outsourcing AR management typically makes sense when AR over 90 days represents more than 20 to 25% of total receivables and is trending upward; when denial appeal activity is low and write-offs are rising; when the in-house billing team is managing claim submission and payment posting but the aging report isn't being systematically worked; or when a billing system transition or rapid practice growth has left a backlog of unresolved old AR. The cost of carrying aged AR, in both revenue lost and the operational overhead of working old claims, often exceeds the cost of an outsourced partner that specializes in AR recovery.

How do accounts receivable management services handle patient balances?

Patient AR management typically involves post-adjudication statement generation (ideally within 30 days of the explanation of benefits being issued), payment plan setup for patients who cannot pay their balance in full, financial counseling for high-balance accounts, multichannel outreach (statement, email, phone), and clear thresholds for escalating to a collection agency versus writing off small uncollectible balances. Patient AR requires a different workflow than insurance AR: the goal is making it easy for patients who intend to pay to do so, while reserving collection escalation for balances that have been unresponsive across multiple outreach attempts.