Understanding Accounts Receivable Management from a Medical Billing Perspective

What Is Healthcare Accounts Receivable?

In healthcare financial management, accounts receivable (AR) is the total value of all outstanding balances owed to the practice — money that has been earned through patient services but not yet collected. AR includes claims submitted to payers awaiting adjudication, claims that have been adjudicated but payment hasn't arrived, denied claims pending appeal, and patient responsibility balances that haven't been paid.

AR is the bridge between service delivery and revenue recognition. Every day a dollar sits in AR is a day it isn't working for your practice. High AR balances, high days in AR, and large aging AR buckets are financial warning signs that require attention.

Key AR Metrics and Benchmarks

Days in Accounts Receivable (Days in AR)

Days in AR measures how long it takes, on average, for claims to be paid after submission. It is calculated as: total outstanding AR ÷ (total charges / number of days in period).

MGMA benchmarks: Top performers achieve days in AR of 30–35 days. The industry median is approximately 40–45 days. Days in AR above 50 indicates significant collection problems. Days above 70 typically indicates systemic billing, denial management, or staffing failures.

Net Collection Rate

Net collection rate measures what percentage of collectable revenue (after contractual adjustments) is actually being collected. It is the most fundamental measure of revenue cycle effectiveness. Best-in-class practices achieve net collection rates of 97–99%. A net collection rate below 95% indicates meaningful revenue leakage.

Gross Collection Rate

Gross collection rate measures collected revenue as a percentage of gross charges (before contractual adjustments). Because gross charges include amounts that will never be collected (contractual write-offs), gross collection rate is a less meaningful measure than net collection rate for most management purposes.

AR Aging Distribution

How AR is distributed across aging buckets (0–30, 31–60, 61–90, 91–120, 120+ days) reveals where collection problems are concentrated. Best practices suggest keeping AR over 90 days below 15–20% of total AR. AR over 120 days is at high risk of being uncollectable and requires priority attention.

Understanding AR Aging

AR aging tracks how long each outstanding balance has been waiting for payment. As AR ages, the probability of collection decreases — not because the money isn't owed, but because timely filing deadlines expire, appeal windows close, and patient balances become harder to collect as time passes.

The Aging Tiers

• 0–30 days: Normal billing cycle. Claims submitted and awaiting adjudication. No action required beyond monitoring for timely filing compliance.
• 31–60 days: Follow-up territory. Claims that haven't responded warrant status inquiries. Payer response time tracking begins.
• 61–90 days: Priority follow-up. Unpaid claims in this bucket need active investigation — is the claim in process? Is there a payer-side issue? Was the claim received?
• 91–120 days: High urgency. Many payer appeal windows close at 90–120 days. Denials in this bucket that haven't been appealed are at risk of becoming permanent write-offs.
• 120+ days: Recovery mode. Claims in this bucket require escalated follow-up, peer-to-peer review for medical necessity denials, and hard decisions about write-off versus continued pursuit.

Common AR Problems and Root Causes

• High days in AR: Usually indicates billing lag (delay between service and submission), claim error rates requiring resubmission, or insufficient follow-up staffing for the claim volume.
• Growing 90+ day AR: Indicates denial management failures — denials aren't being worked, appeals aren't being filed, or follow-up is inconsistent.
• Low net collection rate: Indicates systematic undercollection — contractual underpayments not being identified, patient balances being written off rather than collected, or denial categories being consistently abandoned without appeal.
• High patient AR balance: Indicates failures in upfront patient financial communication, limited payment options, or inadequate collections follow-up for patient responsibility.

AR Management Strategies

• Reduce billing lag: Minimize the time between service delivery and claim submission. Daily charge entry and same-day coding for high-volume specialties dramatically reduces days in AR.
• Track claim status proactively: Don't wait for rejections — actively monitor claim status for all submitted claims and follow up on claims that haven't moved in 14–21 days.
• Prioritize follow-up by value and age: Work highest-value, oldest claims first. Intelligent AR workqueues rank claims by priority based on collectability models.
• Segment payer AR: Analyze AR by payer to identify which payers are driving the most aging. Payer-specific problems (slow adjudication, high denial rates, systematic underpayment) require targeted interventions.
• Set weekly AR KPI reviews: Regular AR reporting that tracks days in AR, net collection rate, and aging distribution by payer and service line gives management visibility into developing problems before they become crises.

Recovering Aged AR

When AR has accumulated in the 90+ or 120+ day buckets, recovery requires a focused project approach distinct from normal billing operations:

• Audit aged accounts to distinguish recoverable from non-recoverable balances
• For recoverable denials: prioritize by dollar value and remaining appeal window
• For patient balances: patient outreach campaigns, payment plan offers, financial hardship screening
• For contractual underpayments: payer contract fee schedule reconciliation and recovery demands
• For non-recoverable balances: structured write-off process with appropriate approval authorities

Aged AR recovery projects routinely identify 10–25% of the aged balance as recoverable with focused effort — representing significant revenue that had been effectively abandoned.