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Laboratory billing is high volume and low margin, so small coding and setup errors repeat across thousands of claims. Payment depends on the CLIA certificate on the claim, a valid ordering provider, a diagnosis that clears the payer's lab policy and correct use of panels, modifiers and date of service rules.
Lab claims are decided by data integrity and policy edits rather than by visit documentation, which changes how billing has to work.
Every denial gets a root cause, a fix and a feedback loop, so the same denial stops coming back.
Claims reject when the ordering NPI is absent, not enrolled or not matched to a signed order. We validate the ordering provider at accessioning and hold claims with missing requisitions until the order is obtained.
Medicare NCDs and commercial lab policies tie each test to covered diagnoses and frequency limits. We screen orders against the policy before billing, obtain an ABN when coverage is doubtful and appeal with the clinical record.
Component billing alongside a panel, or the same test twice without modifier 91, returns as a duplicate or unbundling denial. We build test-to-code mapping in the LIS so claims leave clean.
Core MB bills laboratory work from the requisition forward: ordering provider validation, diagnosis screening, panel mapping and CLIA checks happen before scrubbing, and payer frequency rules are built into the edit set. Credentialing for lab directors and enrollment updates run in the same client portal. Credentialing for new providers runs in the same system, tracked live in your client portal.
Laboratories get the complete revenue cycle from Core MB, from order validation and claim scrubbing through denials, patient statements and reporting that tracks performance by test and payer.
Use 91 when the same test is repeated on the same day to obtain subsequent results, such as serial glucose or potassium. Use 59 or the appropriate X modifier when distinct specimens or sites are tested. Neither modifier should be used to rerun a test for quality control or to get around a payer frequency limit.
Lab coverage policies list specific covered diagnoses and frequency limits per test, and the ordering provider's documentation must support the reason for the order. We screen each order against the applicable NCD or payer policy and obtain an ABN or an updated diagnosis before the test is billed.
Medicare's date of service rules can assign the test to the hospital rather than the lab when the specimen was collected during an inpatient or outpatient encounter within fourteen days of the test. We review collection dates and encounter status so the right entity bills and the claim is not denied as a duplicate.
Send your test menu, CLIA certificate level and monthly accession volume through the quote form and we will respond with a written proposal. Transitions run alongside your current billing so no accessions are missed, and credentialing or enrollment updates for lab directors can start at the same time.
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Tell us about your test menu and payers and we will show how Core MB validates orders, applies panel and modifier rules and keeps rejections from repeating.