Skip to content Credex Healthcare handles pathology lab billing services for independent laboratories, hospital outreach labs, physician office labs, and reference labs that need accurate diagnostic test billing, faster reimbursements, and lower denial rates. Our experts stay present with all pathology laboratory billing rules and keep them separate from physician billing and facility billing.
Credex Healthcare’s laboratory revenue cycle management covers the full pathology lab billing process, from order verification and requisition review through claim submission, denial management, and payment posting.
First-pass claim approval rate
Average pathology lab billing turnaround
Medicare, Medicaid & commercial networks
Panel verification & requisition review
Claims go out with verified CPT codes, correct allergen test counts, immunotherapy preparation and injection codes separated correctly, and biologic drug prior authorization on file. Our team tracks adjudication in real time and follows up before timely filing windows close.
We handle provider enrollment for your pathology lab with Medicare, Medicaid, and private payers. This includes verifying pathology lab-specific CLIA certification and setting up group NPI billing so that your facility can bill correctly from the start.
Within 48 hours, we reviewed claims that were turned down. Our team finds out why the claim was denied, whether it was because of a medical necessity failure, a missing ABN, an LCD exclusion, or a duplicate billing conflict. They then fix it and send it back in with the right paperwork.
Our certified coders check test orders against CPT and HCPCS codes 88305, 88304, 88342, 88175, and the full range of pathology lab codes. They make sure that the diagnosis codes support each test billed and that all payers follow the panel bundling rules correctly.
Before the specimen can be processed, chemistry tests, molecular diagnostics, and specialty panels need to be approved. We keep track of what each payer and test type needs in terms of authorization, and we start requests before samples get to the instrument.
End-to-end RCM includes checking orders, getting charges from the LIS or EHR, posting payments, reconciling contractual adjustments, and sending monthly reports. This gives pathology lab managers a complete picture of collections by test category and payer.
As a dedicated pathology lab billing company in the USA, Credex Healthcare tracks Medicare Local Coverage Determinations by MAC region, monitors commercial payer policy updates on pathology lab test coverage, and stays current on prior authorization requirements for molecular diagnostics and genetic testing panels. LCD requirements change by region and by test. A pathology lab billing approach that worked last quarter may not be compliant today, which is why our team maintains active payer guides for every carrier in your test volume.
Medicare covers pathology laboratory tests under Part B when medical necessity is established, and the test has a covered ICD-10 code under the applicable LCD or NCD. We verify coverage before claim submission and track ABN requirements for tests that fall outside covered indications.
Medicaid coverage for laboratory tests varies significantly by state. Commercial payers apply their own pathology lab fee schedules and authorization rules. Our team manages billing across all payer types, applying the correct coverage rules and diagnostic test billing codes for each.
Reference pathology lab billing and send-out test billing carry their own rules for who bills the payer, how referring pathology lab fees are handled, and which provider NPI goes on the claim. We manage both billing-pathology lab and ordering-pathology lab scenarios correctly for every send-out arrangement.
For laboratory networks operating multiple collection sites or testing facilities, we coordinate facility-level billing, CLIA number management, and payer enrollments across all locations under a single managed workflow with consolidated reporting.
Pathology pathology lab billing fails when the diagnosis does not support the test, the test code is wrong, or the authorization was not obtained before the specimen was processed. Lab billing errors and their fixes are expensive when caught post-payment. Credex Healthcare catches them before the claim goes out.
Every claim submitted to your laboratory is verified against your active CLIA certificate, billing NPI, and payer-specific pathology lab enrollment status. Expired CLIA numbers and unlinked NPIs are among the most common causes of immediate pathology lab claim rejections.
Each test on the requisition must be linked to a diagnosis code that meets the payer's LCD or NCD criteria for that test. We review every diagnosis-to-test pairing before charge entry and flag orders where the diagnosis does not support coverage.
Advance Beneficiary Notices are required when a Medicare-covered test may be denied for medical necessity. We track ABN requirements by testing and by patient, and manage prior authorization for pathology lab tests that require payer approval before processing.
Medicare CLFS rates, Medicaid fee schedules, and commercial pathology lab contracts each pay differently for the same test. We maintain current fee schedules for every payer in your panel and verify that payments match contracted rates at posting.
Each private insurance company and Medicare MAC has its own rules about which allergy tests can be performed, how biologic step treatment works, and when immunotherapy is covered. We keep up-to-date payment guides for all insurance companies on your practice panel and ensure that each claim follows the appropriate rules when it is sent in.
Accounts Receivable Follow-Up
Every week, we look over Lab AR. Before the deadlines for filing claims close, people follow up on unpaid claims. We check underpayments against the right pathology lab fee schedule, and if there is a disagreement, we send the payer the CPT and LCD documentation they need.
Immunology practices lose revenue due to billing patterns that repeat visit after visit. Allergy skin tests were performed and documented, but 58 units were billed because the charge capture template defaulted to a lower number. Immunotherapy visits in which the extract preparation code was omitted because the biller did not know it was billable separately from the injection. Biologic prior authorizations obtained but never renewed, resulting in the next quarterly dose being denied after the patient has already received it. Credex Healthcare’s immunology billing process catches all three at the charge entry stage.
End-to-end immunology insurance billing from charge capture and allergy test count verification through allergenVimmunotherapy and biologic code assignment and electronic submission to Medicare, Medicaid, and commercial payers for every encounter.
Our pathology lab billing experts use the right laboratory CPT codes and modifiers for every type of test, from routine chemistry panels to pathological and histological diagnostics. This cuts down on denials caused by mistakes in diagnostic test billing codes.
Prior Authorization Management
Payers and test types keep track of pathology lab tests that need to be approved ahead of time. Before specimens are processed, authorizations are obtained so that no molecular or infectious test result is given to a patient and then taken away.
Denial management for pathology lab claims includes medical-necessity appeals, LCD exclusion disputes, ABN correction submissions, and duplicate-billing resolutions. Each of these is based on the paperwork that the payer needs.
Managing provider applications includes verifying CLIA certifications, signing up for laboratory NPIs, credentialing and billing physicians, and recredentialing them on a regular basis so that your pathology lab can continue billing without any problems when payer agreements expire.
Monthly reports show collections by test type, denial trends by payer and reason code, pathology lab claim reimbursement timeline by carrier, and AR aging so pathology lab administrators can see exactly where revenue is and where it is stalling.
Years of Pathology Lab Billing Expertise
Lab Enrollment & Credentialing Success
Claim Compliance Rate Across All Payers
Support Available for All Your Needs
Customized Lab Revenue Cycle Solutions
MD
Cherry
“We were getting medical-necessity denials on about 15% of our HIV panel claims, and we could not figure out why. Credex audited six months of remittances and found the problem in the first week. The ordering physicians were using unspecified diagnosis codes that did not meet our MAC’s LCD for those tests. Credex fixed the order entry workflow, the denial rate dropped to under 3%, and we recovered the backlog through appeals.”
Revenue Cycle Manager
Minh
“Outreach pathology lab billing is different from inpatient pathology lab billing, and the team we had was using the wrong workflow for send-out tests. Credex sorted out which claims should go under the hospital’s NPI and which needed the reference pathology lab billing arrangement. That one correction alone fixed a recurring denial pattern we had been living with for over a year.”
MD
Qardisya
“Running billing across four collection sites plus the main processing pathology lab was creating NPI and CLIA errors on claims we did not even know about until the EOBs came back wrong. Credex mapped every site to the right billing identifiers, set up consolidated reporting for all five locations, and our clean claim rate went from around 78% to 94% in the first quarter.”
Operations Director
Bridget
“Molecular and infectious test billing has authorization requirements that change constantly, and most billing companies are months behind. Credex currently has an authorization matrix by payer for our test menu. We stopped having tests processed and then denied post-collection, which was expensive and created real problems with patients. That problem is basically gone now.”
CFO
James
“POL billing has specific rules around which tests can be billed by the physician versus the pathology lab, and we were getting it wrong on a subset of our panels. Credex identified the split, corrected the billing for the affected test types, and set up a monthly audit that catches any new errors before they become a pattern. Our pathology lab revenue went up 22% in the first six months.”
Lab Billing Assessment
We audit your current billing workflow, LIS or EHR charge capture setup, AR aging by payer and test category, denial history sorted by reason code, and payer contract terms. This shows where revenue is being lost and which pathology lab billing errors need to be addressed first.
Credentialing & Payer Enrollment
We verify your CLIA certification status, laboratory NPI enrollment, and billing physician credentialing across every payer in your panel. Any provider application management gaps are resolved before new claims are submitted.
Order Verification & Authorization Setup
We review your requisition workflow, map prior authorization requirements by test category and payer, and set up a tracking system so authorizations are obtained before high-cost tests are processed.
Clean Claim Submission
Our pathology lab billing specialists review each requisition, confirm CPT code selection, verify the ICD-10 medical-necessity link, apply correct modifiers, and submit claims electronically to Medicare, Medicaid, and commercial payers.
Denial Management & Follow-Up
Every pathology lab claim is tracked through adjudication. Denials are reviewed within 48 hours: LCD exclusions, medical necessity failures, ABN corrections, and duplicate billing conflicts each get a targeted correction and resubmission.
Reporting & Ongoing Optimization
Monthly reports cover collections by test category and payer, denial trends by reason code, pathology lab claim reimbursement timeline by carrier, and AR aging. Recurring billing errors are corrected in the charge capture workflow, not just in the claim.
Pathology lab billing carries risks that general billing companies routinely miss: incorrect specifications for chemistry panels, LCD-specific diagnosis restrictions by MAC region, CLIA number mismatches, and panel unbundling rules that differ by payer. Credex Healthcare focuses on laboratory revenue cycle management specifically because these details require a billing team that works on pathology lab claims every day and knows where the compliance risks sit.
Every day, our team goes to work on bills for pathology laboratories. We know how Medicare CLFS rates are calculated, how LCD and NCD coverage policies work for each test and area, how panel bundle rules work for all payers, and where pathology lab billing mistakes happen most often. The way pathology lab billing is done here is not different from how routine billing is usually done.
Your laboratory works with one dedicated pathology lab billing specialist who knows your test menu, payer contracts, CLIA certification scope, and the history of your claims. Billing issues are handled by someone who already knows the context.
In clear monthly reports, pathology lab managers can see receipts by test type and payment, rejection trends by reason, the amount of time that accounts receivable have been open, and the time it takes to bill for services. The information shows the pathology lab's actual financial situation, not just a summary.
At every step of the billing process, strict HIPAA rules are followed when working with a patient's medical data. All the tools your pathology lab uses to process claims follow security standards and have clear written access rules.
Lab revenue leaks quietly. Tests were denied for medical necessity because the diagnosis on the requisition did not meet the payer’s LCD. Infectious panels were written off because authorization was not obtained before the specimen was processed. Send-out claims were billed under the wrong NPI for months before anyone noticed. These are not billing problems. They are workflow issues that a pathology lab billing audit finds in the first few weeks.
Credex Healthcare starts with a free audit of your present pathology lab billing. This includes looking at the denials history by reason code, the accuracy of your CPT codes, your LCD compliance, and the status of your customer registration. You do not have to make a promise to get that rating. We figure out the exact amount that can be recovered and the changes to the process that will prevent the same losses from happening again.
The process of getting paid for medical tests done by independent labs, hospital labs, reference labs, and physician office labs is called pathology lab billing. A CPT code from the pathology lab range is given to each test, along with an ICD-10 diagnosis code that proves it is medically necessary. This information is then sent to the payer along with the pathology lab’s NPI and CLIA number. Medicare, Medicaid, and private insurance all have different rules about how much they will pay and what they will cover.
A specific set of CPT codes is used to pay for labs, particularly for chemistry panels, microbiology and culture, and specimen collection. Some common numbers are 88305 (Level IV surgical pathology), 88304 (Level III surgical pathology), 88342 (Immunohistochemistry), and 88175 (Cytopathology).
Yes, Medicare Part B covers pathology laboratory tests as long as they are medically necessary (based on the right ICD-10 diagnosis code), and the test is covered by the relevant Local Coverage Determination or National Coverage Determination. Credex Healthcare checks to see if Medicare covers pathology lab tests before adding them to a patient’s bill. This keeps claims from going unpaid.
It usually takes 14 to 30 days for Medicare to handle clean computer test bills. Most commercial payers pay within 30 days if the CPT codes and diagnosis codes are correct and meet LCD standards. Timelines for Medicaid vary by state but are usually between 30 and 60 days. All three are checked by Credex Healthcare’s order verification process before the claim is sent. This keeps most pathology lab claims on the shorter end of the billing response time for labs.
The billing industry is rapidly evolving. By the year 2025, the system and tools used
Billing companies ensure compliance with HIPAA and other regulations by being legitimate and reliable. Every
At Credex Healthcare, we know how frustrating it is when claims are denied. That is
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