Need Support?
PLA-Over-Tier Code Hierarchy Violations
Missing MolDX Z-Code / DEX Registration
Genomic Sequencing Panel Component Stacking
Prior Authorization and Genetic Counseling Documentation Gaps
Multianalyte Assay (MAAA) Component Unbundling
Analyte-specific hereditary gene testing including BRCA1/BRCA2 full sequence and duplication/deletion analysis (81162–81167), known familial variant testing (81212), CFTR analysis, Factor V Leiden, and MTHFR.
Tier 1 codes are gene-specific, and the correct code depends on exactly what the order requests; full sequence analysis, known familial mutation testing, or duplication/deletion analysis carry different codes, and billing full sequencing when the order only supports known-variant testing is a recurring overpayment and audit trigger.
Rare hereditary condition testing for genes without a dedicated analyte-specific code, organized into nine effort-based levels rather than named by gene.
Because Tier 2 descriptors don’t name the gene being tested, payers require supplemental documentation identifying the test name, the specific gene or genes, the method, and the clinical rationale; claims missing that documentation are pended or denied at a materially higher rate than gene-named Tier 1 claims.
Hereditary cancer panels, cardiac arrhythmia and cardiomyopathy panels, hereditary hearing loss panels, epilepsy panels, and clinical exome or genome sequencing.
When a defined GSP panel code exists, it must be reported instead of stacking individual Tier 1 or Tier 2 codes for the same genes; reporting multiple codes for overlapping genes is treated as incorrect coding and denied. The unlisted code 81479 is reserved for tests with no defined code anywhere in the set and carries a heavier documentation burden and closer payer scrutiny.
Proprietary branded panels such as hereditary cancer next-generation sequencing panels and tumor genomic profiling assays, each assigned an alphanumeric PLA code ending in “U.”
A valid PLA code takes precedence over Tier 1 or Tier 2 codes and must be reported whenever one exists for the test performed. A growing number of MACs and commercial payers additionally require a MolDX DEX Z-Code, registered to that specific test, alongside the CPT or PLA code; without it, the claim is denied regardless of medical necessity.
CYP2D6, CYP2C19, CYP2C9, and VKORC1 single-gene testing, plus combinatorial PGx panels used to guide psychiatric, cardiac, and pain management medication selection.
Payers increasingly limit reimbursable PGx testing to genes tied to a specific prescribed or contemplated medication, and combinatorial multi-gene panels billed without a documented medication-management indication; particularly for psychiatric prescribing, are one of the fastest-growing genetic testing denial categories.
Cell-free fetal DNA aneuploidy screening, expanded carrier screening panels, and first-trimester combined screening biomarkers.
Many commercial plans still require prior authorization and documented patient counseling for NIPT, despite professional society guidance that the screening be offered to all pregnant patients regardless of risk category, and claims lacking that counseling attestation are a leading source of denial.
Solid tumor next-generation sequencing panels, germline-versus-somatic variant distinction, circulating tumor DNA (liquid biopsy) testing, and algorithmic multianalyte assays such as recurrence-risk scores.
Multianalyte Assay with Algorithmic Analysis (MAAA) results are reported under one specific code covering the algorithmic score itself — billing the individual component analytes that feed that algorithm as additional separate codes is explicitly prohibited and denied as unbundling.
TransLabs’ specialized RCM services are built exclusively for labs, addressing the unique challenges that generalist billers miss. We provide end-to-end revenue cycle solutions designed specifically to turn laboratory complexity into profitability.
Complete payer enrollment, CLIA certification management, and network participation setup across all insurance carriers. TransLabs manages every credentialing detail so that your laboratory gets paid in-network from day one without any administrative delays.
Real-time insurance verification, benefits investigation, and prior auth completed before specimen processing begins. Confirming coverage upfront eliminates preventable denials and protects your lab from unexpected reimbursement failures.
Patient registration, appointment coordination, insurance verification, and customer service excellence managed by experienced laboratory billing professionals. A well-run front office reduces downstream billing errors and creates a better experience.
TransLabs provides expert RCM services to clinical laboratories in all 50 states, delivering the same exceptional results whether you’re a community hospital lab or a large reference facility. We bring specialized lab billing expertise to facilities nationwide, combining remote efficiency with hands-on partnership.
Each Medicare Administrative Contractor maintains its own LCD specifying which ICD-10 codes support coverage for hereditary panels, pharmacogenomic testing, and tumor genomic profiling. TransLabs maintains live LCD databases for every MAC and validates diagnosis code linkage on every genetics and genomics claim before submission.
A valid Proprietary Laboratory Analyses code must be reported instead of a Tier 1 or Tier 2 molecular pathology code whenever one exists for the test performed, and reporting both is treated as incorrect coding. TransLabs runs every claim through a hierarchy check before it leaves our system, not after a denial arrives.
Molecular and genetic tests billed within a MolDX jurisdiction, and increasingly within commercial Medicare Advantage plans, require a registered DEX Z-Code alongside the CPT or PLA code. TransLabs verifies Z-Code registration status for every test your lab offers and manages the technical assessment process for tests not yet registered.
Genetic and genomic testing is classified as moderate- or high-complexity testing under CLIA, requiring the corresponding certificate before any claim can be submitted. TransLabs verifies that the CPT, GSP, or PLA code billed matches the CLIA certification level the lab actually holds.
Traditional Medicare does not offer prior authorization for most genetic testing, which means a beneficiary requesting testing that may not meet an LCD's medical necessity criteria needs a valid ABN issued before the specimen is collected. TransLabs builds ABN workflows into front-end registration so the documentation is always in place.
The CLFS sets Medicare payment rates for Tier 1, Tier 2, GSP, and many PLA-coded genetic tests, and updates annually on January 1. TransLabs monitors CLFS changes, updates billing tables immediately, and flags payers reimbursing below CLFS rates.
Dedicated genetics & genomics billing specialist assigned to your practice
Complimentary 12-month claims audit across Medicare, Medicaid, and commercial payers
Uncover your top 3 revenue leaks in code hierarchy, Z-Code registration, and panel bundling
Custom strategy tailored to your testing platform and LIS/billing software
Live in 24 hours with no contracts and no upfront fees