Laboratory Billing
The laboratory billing process is the interaction between a clinical lab or pathology group and the insurance company (payer). The entirety of this laboratory billing interaction is known as the billing cycle, which can take anywhere from several days to several months to complete, and require several interactions before a resolution is reached. The entire process is the function of what is commonly known as the laboratory coding/billing/collections department.
Laboratory billing starts with laboratory coding. After a lab service is provided, diagnosis and procedure codes are assigned. These codes assist the insurance company in determining coverage and medical necessity of the services. The codes used for laboratory billing are the International Statistical Classification of Diseases and Related Health Problems, usually called by the short-form name International Classification of Diseases (ICD), and the Current Procedural Terminology (CPT) codes.
The ICD is the international “standard diagnostic tool for epidemiology, health management and clinical purposes.” The current version is ICD-9, with ICD 10 scheduled to become the new standard on Oct. 15, 2015. It is maintained by the World Health Organization, the directing and coordinating authority for health within the United Nations System.
The ICD is designed as a health care classification system, providing a system of diagnostic codes for classifying diseases, including nuanced classifications of a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances, and external causes of injury or disease.
The CPT code set is a medical code set maintained by the American Medical Association through the CPT Editorial Panel. The CPT (copyright protected by the AMA) describes medical, surgical, and diagnostic services and is designed to communicate uniform information about medical services and procedures among physicians, coders, patients, accreditation organizations, and payers for administrative, financial, and analytical purposes.
Once the procedure and diagnosis codes are determined, the lab bill enters the laboratory collections/revenue cycle management phase. The payer is usually billed electronically by formatting the claim as an ANSI 837 file and using Electronic Data Interchange to submit the claim file to the payer directly or via a clearinghouse. The payer processes the claims usually by medical claims examiners or medical claims adjusters. For higher dollar amount claims, the insurance company has medical directors review the claims and evaluate their validity for payment using rubrics (procedure) for patient eligibility, provider credentials, and medical necessity.
Approved claims are reimbursed for a certain percentage of the billed services. These rates are pre-negotiated between the health care provider and the insurance company. Failed claims are denied or rejected and notice is sent to provider. Most commonly, denied or rejected claims are returned to providers in the form of Explanation of Benefits (EOB) or Electronic Remittance Advice.
Upon receiving the denial message the provider must decipher the message, reconcile it with the original claim, make required corrections and resubmit the claim. This exchange of claims and denials may be repeated multiple times until a claim is paid in full, or the provider relents and accepts an incomplete reimbursement.
Some Labs Report Faster Pay for Molecular, Genetic Tests
By Joseph Burns | From the Volume XXVI No. 13 – September 23, 2019 Issue
DURING RECENT MONTHS, some labs are reporting improvement in how their claims for certain molecular and genetic tests are being reimbursed. This is progress from the financial crises experienced during 2013 for many labs performing molecular and genetic tests….
What Labs Need to Do as Payers Audit More Claims
By Joseph Burns | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: Attorneys who advise pathologists and clinical laboratories on compliance issues say the number of audits from the government and third-party payers has increased sharply in recent years. In those audits, payers are looking for recoupment of overpayments. A lab’s fai…
Beware Ides of March! Lawmakers Are in Session
By Joseph Burns | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: Few pathologists and lab administrators know that, when the Protecting Access to Medicare Act of 2014 (PAMA) became law last April 1, language in the bill was scored to reduce Part B clinical laboratory test fees by $2.5 billion over 10 years. Congress used those lab…
Market Price Report Rules Must Address All Issues
By Joseph Burns | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: Under the Protecting Access to Medicare Act, CMS must collect market price and volume data from certain labs beginning January 1, 2016. CMS will use this data to establish Part B clinical laboratory fees beginning in 2017. One lab association representing community a…
Longer Pay Cycle for Labs, Plus Lower Collection Rate
By Joseph Burns | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: Across the United States, clinical labs, histology labs, and pathology groups are experiencing both a much longer payment cycle for claims and a decreased gross collection rate. Blame can be placed on several trends. One trend is the steady increase in the number of patients …
At Mid-Year, Labs Struggle to Get Paid for Many Tests
By Joseph Burns | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: At a recent coding and billing conference, pathology and lab clients of one of the nation’s largest revenue management companies agreed that three trends have caused lower revenues since the start of 2014. One trend seen by labs involves higher deductibles and copayments fr…
Could Health Insurers Be at War with Clinical Labs?
By Robert Michel | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: It may sound ridiculous to assert that the nation’s largest health insurers are now “waging war” against clinical labs. However, some very smart people in the profession of laboratory medicine are expressing this opinion. To support such a conclusion, they point to paye…
BRLI-Horizon BCBS Lawsuit Is Window to Payer Actions
By Robert Michel | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: Do “actions speak louder than words?” In New Jersey, one lab company sued a major health insurer for “breach of contract and fraud.” Court documents include claims describing how one health insurer became ever more sophisticated in how it played one public lab company…
PAMA’s New Rules Affect Lab Test Pricing, Coverage
By Joseph Burns | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: For several reasons, the “Protecting Access to Medicare Act” (PAMA) has the potential to be the most disruptive federal legislation directed at the clinical lab industry since the enactment of CLIA 1988. Following passage of the law, some lab industry groups have taken di…
New Pricing Formula for Advanced Diagnostic Tests
By R. Lewis Dark | From the Volume XXVI No. 13 – September 23, 2019 Issue
CEO SUMMARY: One section of the federal H.R. 4302: Protecting Access to Medicare Act of 2014 is getting positive reviews from many lab experts. The law defines advanced diagnostic tests (ADTs) and directs CMS to assign a temporary HCPCS code and use list prices to pay labs for such tests …
CURRENT ISSUE

Volume XXXII, No. 6 – April 21, 2025
Now that a federal judge has vacated the FDA’s LDT rule, The Dark Report analyzes the judgement and notes the various steps the FDA could take in response. Also, lab testing at pharmacies is proving to be less successful than was once anticipated.
See the full table of contentsHow Much Laboratory Business Intelligence Have You Missed?
Lab leaders rely on THE DARK REPORT for actionable intelligence on important developments in the business of laboratory testing. Maximize the money you make-and the money you keep! Best of all, it is released every three weeks!
Sign up for TDR Insider
Join the Dark Intelligence Group FREE and get TDR Insider FREE!
Never miss a single update on the issues that matter to you and your business.
Topics
- Anatomic Pathology
- Clinical Chemistry
- Clinical Laboratory
- Clinical Laboratory Trends
- Digital Pathology
- Genetic Testing
- In Vitro Diagnostics
- IVD/Lab Informatics
- Lab Intelligence
- Lab Marketplace
- Lab Risk & Compliance
- Laboratory Automation
- Laboratory Billing
- Laboratory Compliance
- Laboratory Equipment
- Laboratory Information Systems
- Laboratory Management
- Lean Six Sigma
- Managed Care Contracts
- Molecular Diagnostics
- Pathology Trends
- People
- Uncategorized