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September 2026 | Healthcare Revenue Cycle News
Clinical laboratories across the United States are operating in an increasingly complex reimbursement environment. From changing Medicare payment rules and quarterly coding updates to payer-specific requirements, medical necessity edits, documentation, denials, and aging accounts receivable, getting a laboratory test performed is only part of the process. Getting that test billed correctly and reimbursed appropriately requires a disciplined laboratory revenue cycle.
For independent laboratories, pathology groups, molecular and genetic testing laboratories, toxicology labs, and physician-office laboratories, specialized laboratory billing services can play an important role in protecting cash flow and reducing preventable claim problems.
The Centers for Medicare & Medicaid Services (CMS) continues to update the Clinical Laboratory Fee Schedule (CLFS) throughout 2026. The July 2026 CLFS release contained 2,206 records, up from 2,162 in the January release, reflecting ongoing changes laboratories and billing teams must incorporate into their systems and workflows.
CMS has also issued an October 2026 quarterly update to the CLFS and Clinical Laboratory Improvement Amendments (CLIA), with implementation scheduled for October 5, 2026.
For laboratory owners, this reinforces an important point:
Laboratory billing cannot be treated as a set-it-and-forget-it process.
Billing systems, codes, payer rules, edits, and reimbursement workflows require ongoing review.
One of the most significant developments affecting the laboratory sector involves Medicare payment rates.
CMS says the 2026 data-reporting period for applicable clinical diagnostic laboratory tests ended on July 31, 2026, using data collected from January 1 through June 30, 2025. Under changes enacted through the Consolidated Appropriations Act, 2026, there is no phase-in payment reduction for 2026. Beginning January 1, 2027, through 2029, applicable CLFS payment reductions may be as much as 15% per year compared with the preceding year’s payment amount for a test.
This makes revenue-cycle efficiency particularly important as laboratories prepare for 2027.
Lower reimbursement for some tests combined with billing leakage, preventable denials, underpayments, or slow A/R can put additional pressure on margins.
Laboratory billing has its own operational complexities.
A laboratory claim may involve the appropriate CPT or HCPCS code, ICD-10 diagnosis information, CLIA requirements, ordering/referring provider information, payer-specific medical necessity requirements, coverage policies, modifiers when applicable, and accurate patient and insurance information.
CMS maintains specific laboratory resources covering the CLFS, HCPCS coding, ICD-10, National Coverage Determinations, NCCI edits, electronic billing, claim adjustment reason codes, and Medicare claims-processing requirements.
A problem in any part of the process can potentially lead to a rejection, denial, request for additional information, underpayment, or delayed reimbursement.
Some of the most common revenue-cycle issues laboratories should watch include:
The challenge is not simply correcting these claims after they fail.
A stronger laboratory RCM process asks:
Why are they failing repeatedly?
Imagine a laboratory submits hundreds of claims and repeatedly receives the same medical-necessity denial.
A basic billing operation may simply correct and resubmit each claim.
A more strategic revenue-cycle operation investigates the pattern:
Which test is generating the denial?
Which payer is involved?
Which diagnosis codes are being submitted?
Does the documentation support the test?
Does the payer have a specific coverage policy?
Is the problem isolated to a provider, location, or workflow?
Can the problem be prevented before the next batch of claims is submitted?
That is the difference between claim processing and revenue cycle management.
Effective laboratory billing begins before a claim reaches the insurance company.
A strong workflow can encompass:
Patient & Insurance Information → Eligibility → Order & Documentation → Coding Review → Claim Creation → Claim Scrubbing → Submission → Adjudication → Payment Posting → Denial Management → A/R Follow-Up → Reporting
When these steps operate separately without meaningful oversight, revenue can become trapped between departments.
When they are managed as one connected revenue cycle, laboratories gain greater visibility into where reimbursement problems originate.
Not every laboratory test is automatically covered simply because it has a valid billing code.
CMS specifically notes that the inclusion of a laboratory test code and payment amount on the CLFS does not itself mean Medicare covers that test.
Coverage can depend on applicable policies, the patient’s circumstances, documentation, diagnosis, and other requirements.
That distinction is important.
A valid CPT/HCPCS code does not automatically equal a payable claim.
Laboratory billing teams also need to stay aligned with applicable CLIA requirements.
CMS’s July 2026 laboratory update specifically advised billing staff about CLFS changes, annual and quarterly CLIA edits, new waived tests, and new and deleted CPT codes.
For a high-volume laboratory, even a small configuration error affecting one test can potentially be repeated across many claims before someone recognizes the pattern.
That is why proactive claim monitoring is so important.
Submitting claims is only the beginning.
A laboratory can generate significant testing volume while still experiencing cash-flow problems if its accounts receivable is not actively managed.
A/R management should help identify claims that are unpaid, underpaid, rejected, denied, approaching filing deadlines, requiring documentation, or sitting without meaningful payer action.
The objective should not simply be to produce an A/R aging report every month.
The objective is to work the report.
Payment posting is another area that is sometimes treated as a basic administrative function.
But properly managed payment information can reveal valuable trends.
Repeated contractual adjustments, unexpected reimbursement differences, denials, zero-pay claims, partial payments, and payer behavior can all provide information that management can use to improve the revenue cycle.
A strong RCM operation turns payment data into actionable information.
At Nexa DigitalPro, we believe laboratory billing should be managed as a revenue strategy—not simply data entry.
Our laboratory RCM support can help healthcare organizations strengthen key areas of the billing cycle, including claims management, eligibility verification, claim review, payment posting, denial management, corrected claims, appeals, payer follow-up, A/R recovery, revenue-cycle reporting, and workflow analysis.
Our approach is straightforward:
Instead of repeatedly fixing the same billing problem, the goal is to identify the underlying cause and help prevent unnecessary revenue leakage.
With the latest CMS laboratory updates already issued and additional CLFS payment changes approaching in 2027, laboratories have a valuable opportunity to review their revenue-cycle performance now.
Look beyond total collections.
Evaluate denial rates, rejection trends, A/R aging, payer response times, underpayments, recurring coding problems, claim-submission accuracy, documentation gaps, and the time between performing a test and receiving payment.
Those indicators can reveal problems that revenue totals alone may hide.
Laboratories play an essential role in healthcare. Their billing operation should support that mission rather than becoming a source of constant administrative burden.
A well-managed laboratory revenue cycle can help create cleaner claims, fewer preventable denials, stronger A/R management, better financial visibility, and more predictable cash flow.
Author: Michael Clarke
