Every day, medical practices and hospitals see patients and deliver services, but getting paid can lag behind. Accounts receivable (AR) follow-up is the behind-the-scenes work that turns those pending claims into cash. It includes tracking every claim until it’s fully paid. Without diligent AR follow-up, healthcare revenues get stuck. Even up to 20% of a provider’s income can be delayed if claims aren’t actively managed. In other words, AR follow-up is the financial recovery engine of a healthcare organization, keeping daily operations on track.
What is AR in Medical Billing?
In medical billing, AR (Accounts Receivable) refers to all money owed to a healthcare provider for services already delivered but not yet paid. This includes payments due from insurance companies and any remaining balances billed to patients after insurance pays. Whenever a claim isn’t paid in full on first submission, it becomes part of the AR bucket that the billing team must follow up on.
Why Is AR Follow-Up Important?
AR follow-up is crucial because it directly affects a practice’s cash flow and financial health. Every unpaid claim is revenue that the practice has earned but not yet received. By systematically chasing those claims, providers convert “on paper” charges into real cash. A strong AR follow-up program reduces payment delays and revenue leakage. It helps bring reimbursements in faster and cuts down the cycle time from service to payment. Without it, claims just sit there unresolved.
Professional AR follow-up drives down denial rates over time. When teams identify patterns of denied claims, they fix root causes (like coding errors or missing authorizations) and prevent the same issues from happening again. In the long run, this means fewer denials, fewer write-offs, and healthier collections.
The A/R Follow-Up Process: Key Steps
AR follow-up is a daily, step-by-step process. The billing team generally works through these key steps to clear out outstanding claims:
Analyze Aging Reports
Each day, the team runs an AR aging report that groups all unpaid claims by how many days they are outstanding. This report highlights which claims are new (0–30 days) and which are aging (31–60, 61–90 days, etc.). Older claims typically get higher priority. By organizing claims into aging buckets, the practice can focus first on the biggest or oldest balances. For example, most providers aim to follow up on any 60+-day claim immediately, while claims just a few weeks old may be monitored less urgently. This step sets the worklist for the week, ensuring nothing is overlooked.
Investigate Denials & Delays
For any claim that is not paid, the AR specialist digs in to find out why. They pull up the claim history, look at the payer’s remittance advice (ERA/EOB), and check the patient’s account notes. They verify basics like insurance eligibility and coverage on the date of service, confirm that any required prior authorizations were obtained, and make sure all codes (ICD-10, CPT, HCPCS) were correct. The goal is to identify exactly why a claim stalled. Was it denied for a coding error? Was a necessary form missing? By pinpointing the root cause, the specialist knows what action to take next.
Correct & Resubmit
If the investigation shows a simple billing or coding mistake, the claim is corrected and resubmitted. For example, if a modifier was wrong or a required field was blank, the billing or coding team fixes the error in the practice management system and sends the claim back to the payer as a corrected claim. They use a “corrected claim” code so the payer knows it’s a resubmission, not a duplicate. All changes are documented in the system. By fixing issues quickly, most claims get paid on the next try.
Appeal Denied Claims
Some denials aren’t just clerical errors but require a formal appeal. In this case, the AR team compiles a medical appeals package. They gather supporting documents like physician notes, operative reports, or proof of prior authorization to justify the claim, then submit a written appeal to the insurer. For instance, if a claim was denied as “not medically necessary,” the specialist will include detailed records and a letter explaining why the service was indeed necessary under the patient’s plan. Timely appeals are essential—most payers have strict appeal deadlines—so the team tracks appeal windows carefully.
Patient Collection
After insurance pays what they will, any remaining balance becomes the patient’s responsibility (copays, deductibles, coinsurance). The billing staff then shifts to patient billing. They send out statements, make follow-up calls, or set up payment plans for patients. Clear communication is key: if patients understand their bills and feel supported, they are more likely to pay on time. This step ensures the provider collects all earned revenue, not just what insurance pays.
By consistently moving claims through these steps, practices keep their AR under control and cash flowing.
How Long Should Claims Stay in AR?
Ideally, claims shouldn’t stay in AR very long. Industry benchmarks suggest most claims should be paid or resolved within about 30–40 days of submission. High-performing billing teams aim for under 30 days on average. When AR days creep above 50 days, it signals trouble in the process (like slow submissions or backlog in follow-up).
Any claim older than 90 days becomes a red flag. It is much harder to collect payment on very old claims—payers may ignore them, and timely filing deadlines can expire. In fact, AR over 90 days is a key risk indicator: top organizations keep the over-90-day bucket under about 5% of total AR. In practice, this means the team should escalate claims as they near 60–90 days so nothing falls through the cracks.
How Can AR Aging Be Reduced?
Managing AR effectively is about prevention and quick response. Four key tactics help keep AR aging low:
Accurate Documentation
Ensure each claim is clean before it goes out. This means verifying patient insurance and benefits up front, using claim-scrubbing software, and having coders enter the correct ICD-10 and CPT codes and modifiers. For example, verifying eligibility and benefits at registration can prevent many follow-up headaches. Automated claim validation tools can catch errors or missing info before submission. Thorough documentation (notes, forms, authorizations) means fewer claims get rejected for clerical reasons. This front-end accuracy dramatically lowers denials.
Prompt Action
Work claims quickly. Billing teams should review their AR aging report daily and follow up on any unpaid claims within days of falling into a new aging bucket. In practice, this means checking 0–30 day claims weekly, 31–60 day claims within a week, and 60–90 day claims within 1–3 days. By contacting payers early and resolving simple issues immediately, the average time from claim submission to payment drops. Proactive follow-up stops claims from just “aging “out”—the longer a claim sits, the harder it is to resolve.
Automation
Leverage technology to remove manual work. Billing teams use automated reminders and workflows to track unpaid claims and alert staff when action is due. For example, software can flag claims approaching appeal deadlines or log into payer portals to check status regularly. This frees up staff to focus on the harder tasks (like appeals and denials) instead of repetitive status checks. Studies show that automating these routine tasks reduces errors and ensures no claim slips through unnoticed.
Aging Management
Regularly monitor AR by age. This means not just looking at total AR dollars but also the distribution across aging buckets (0–30, 31–60 days, etc.). By tracking metrics (like what percent of AR is over 60 or 90 days), teams spot trouble early. Consistent weekly reviews of the aging report help catch problem trends – for example, if a particular payer’s claims are taking too long. Professional aging management also means having clear rules for prioritization (e.g., oldest claims and highest-dollar claims get worked first).
What Does an AR Specialist Do?
An AR specialist (also called an AR analyst or follow-up specialist) is the person who makes AR follow-up happen. Every day they pull AR aging reports and identify which claims need work. They log into payer portals or clearinghouses to check claim status, carefully note any returned denial codes, and decide on next steps.
In practice, an AR specialist’s tasks include:
Monitoring AR Aging: Running daily reports and sorting claims by age and priority.
Claim Research: Reviewing claim details and payer responses to diagnose issues (eligibility, authorization, coding errors, etc.).
Payer Communication: Contacting insurance companies by phone, fax, or portal for updates or clarifications on denied claims.
Claim Correction and Submission: Fixing any billing errors and resubmitting claims or sending appeals when needed.
Payment Posting: Once a claim is paid (in full or partially), posting the payment and comparing it against the expected amount (flagging underpayments).
Patient Billing: For balances owed by patients, sending statements and arranging payment plans.
AR specialists generally have healthcare billing or coding credentials, and they must be detail-oriented problem solvers. They turn days of unresolved bills into collected revenue.
What is the difference between AR follow-up and denial management?
Accounts receivable follow-up and denial management are closely related but not identical. AR follow-up is the broad, ongoing process of working all unpaid or underpaid claims—any claim that hasn’t been paid in full (whether it’s stuck, delayed, or denied) is part of AR follow-up. This includes contacting payers for status updates, correcting submission errors, and collecting patient balances.
Denial management, on the other hand, is a specific subset of AR follow-up. It focuses only on claims that have been denied or rejected by the payer. In other words, AR follow-up reveals which claims are unpaid, and denial management fights to recover the payments withheld on those denied claims.
Every denial management task (analyzing denial codes, filing appeals) happens within the larger AR follow-up workflow. AR follow-up also covers other scenarios (like partial payments, claim delays, and patient collections) that denial management does not.
Conclusion
Accounts receivable follow-up is a core part of medical billing. It’s the set of tasks that turns submitted claims into collected cash. By systematically reviewing aging reports, resolving denials, resubmitting claims, and billing patients, AR teams ensure that providers are paid for services they’ve already delivered. Well-managed AR follow-up keeps cash flowing daily and prevents revenue from slipping through the cracks. In today’s complex healthcare system, mastering AR follow-up is a strategic priority for any provider.
FAQs
AR stands for Accounts Receivable. In healthcare, it means the money owed to a provider for services already delivered but not yet paid by insurers or patients.
AR teams work upstream to prevent denials. They verify insurance eligibility before visits, track required prior authorizations, and use automated claim-scrubbing tools to catch errors before claims go out. They also review denial trends to fix root causes. These steps—clean claims, proper authorizations, and accurate coding—greatly cut down denials.
During AR follow-up, the billing team actively pursues payment on each unpaid claim. They pull an aging report, prioritize claims, check payer portals for status, research any denials or missing information, correct errors, and resubmit or appeal claims as needed. They also post payments when received and bill patients for leftover balances. Essentially, they keep working each claim every day until it’s paid or written off.
AR follow-up is often manual and resource-intensive. Teams face high claim volumes, repetitive status checks, and complex payer rules. Common challenges include limited staff, fragmented IT systems, and constantly changing insurance policies. All this leads to backlogs and aging AR if not managed carefully. Good processes and tools (and sufficient staffing) are needed to overcome these challenges.
