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Serum Tumor Markers for Malignancies
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Defines medical necessity and reimbursement guidance for measurement of serum tumor biomarkers for cancer detection, workup, monitoring, and surveillance for Oscar Health members; applies to providers submitting claims to Oscar Health.
No material clinical or coverage changes in this revision.
Coverage Criteria for Serum Tumor Marker Testing
Covered tumor marker testing (marker-specific indications and surveillance)
Measurement of specific serum biomarkers meets criteria when used for the listed cancer-specific indications and surveillance schedules.
See cited policy sections for marker-by-marker indications and timing.
Not medically necessary / Not meeting criteria
Explicit exclusion for unspecified markers
Explicitly not medically necessary for screening/detection
Ovarian mass biomarker testing
Covered when ALL of the following are met
FDA has approved ROMA, OVA1, and OVERA for estimating risk in patients with an adnexal mass when surgery is planned and the patient has not yet been referred to an oncologist; NCCN does not recommend routine use of these tests to determine mass status.
Guideline-based use cases
Coverage and clinical use are guided by specialty society recommendations; examples include:
ASCO recommends these measures for staging, risk stratification, and prolonged surveillance; not for screening.
AASLD advises diagnosis should be based on imaging or pathology; biomarkers insufficient alone for diagnosis.
Use intended for preoperative risk estimation and referral decisions.
Markers should not replace tissue biomarker testing.
Measurement may be considered in selected contexts but not for routine treatment guidance.
Use of serum tumor biomarkers described elsewhere in this policy is limited to the cancer-specific indications and surveillance schedules listed in the policy text. For all other cancer indications not discussed above, use of these biomarkers (alone or in a panel) DOES NOT MEET CRITERIA. Claims for markers or marker panels outside the covered indications are subject to non-coverage or denial.
Analyses that rely on identification of proteomic patterns in serum for the purpose of population-level cancer screening or routine detection are not supported by sufficient evidence. Proteomic pattern analysis in serum for the screening and detection of cancer DOES NOT MEET CRITERIA, and proteomic approaches remain investigational.
Serum calcitonin is the primary tumor marker for medullary thyroid carcinoma, but professional organizations differ on routine use. The American Thyroid Association and other authors have noted a lack of consensus and recommended against routine universal screening of all patients with thyroid nodules using calcitonin. Ordering should align with guideline recommendations and individual clinical context rather than indiscriminate population screening.
Professional society guidance such as ADLM, ASCO, and NANETS does not support routine use of many nonspecific serum biomarkers for screening or to guide treatment decisions in cancers where evidence is limited. ADLM did not recommend biomarkers for routine screening, monitoring, prognosis, or diagnosis for bladder, cervical, and gastric cancers, and NANETS and ASCO advise against routine measurement of nonspecific markers when they do not inform management. Tests should be ordered in contexts where guidelines indicate clinical utility.
The policy includes evidence summaries and literature references that describe clinical performance, intended uses, and limitations for specific biomarkers (for example, ALP, AFP and AFP-L3, and combinations including PIVKA-II/DCP). These references inform the marker-specific coverage statements and surveillance recommendations but do not themselves constitute additional coverage rules.
Any other clinical indications for tumor marker testing not explicitly addressed in this policy are considered outside the scope of coverage and DO NOT MEET CRITERIA. Requests for markers not listed in the policy (including panels containing unaddressed markers) may be denied.
Based on current evidence and policy guidance, serum proteomic-pattern-based assays used for cancer screening or detection are not medically necessary and do not meet coverage criteria.
Routine population screening or indiscriminate ordering of serum tumor markers (for example, blanket calcitonin testing for all thyroid nodules) is discouraged where professional guidelines do not recommend such screening. Testing should be directed by clinical indication and guideline-supported use.
ASCO and NANETS recommend against routine use of many serum tumor markers for screening asymptomatic individuals. These societies emphasize that non-tissue–based markers that lack validated accuracy or that do not inform treatment decisions should not be used for routine population screening.
When ordering biomarker testing, documentation should support the clinical indication and alignment with guideline recommendations (for example, NCCN Biomarkers Compendium). For proprietary or laboratory-developed multi-marker assays, include the test name, clinical indication, and how the result will affect management when submitting for coverage consideration.
Marker-specific indications (examples) — ALP, AFP, AFP-L3, CA19-9, CA125/HE4, calcitonin, CEA, B2M, etc.
See specific policy sections for surveillance intervals per marker.
Clinical use and interpretation information — background and evidence summaries for specific biomarkers
Clinicians should consider assay limitations and guideline guidance when interpreting results.
Diagnostic/prognostic/monitoring uses for specific malignancies (e.g., B2M, serum free light chains, troponin, BNP/NT-proBNP, tryptase)
See cited evidence discussions for study findings and assay caveats.
Use of CA-series markers and CEA as adjunctive markers across cancers
These markers are generally adjunctive and should not replace tissue diagnosis or guideline‑recommended testing.
Diagnosis, staging, monitoring, surveillance when supported by guideline timing and clinical context
Follow society guidance and cited schedules for surveillance intervals.
References support use of specific markers for multiple malignancies — literature/guideline sources
See evidence section for numbered citations and guideline sources.
Covered Indications and Clinical Contexts
Marker-specific indications including examples and surveillance intervals
Refer to per‑marker policy entries for exact intervals.
Clinical use and interpretation information for listed biomarkers
Clinicians should consider sensitivity/specificity data and validate with imaging or pathology where indicated.
Diagnostic/prognostic/monitoring use in specific malignancies (B2M, serum free light chains, cardiac biomarkers in amyloidosis, tryptase)
See each marker section for study results and clinical caveats.
CA-series and CEA adjunctive uses across tumor types
HE4 plus CA‑125 combinations improve diagnostic sensitivity for ovarian malignancy in some studies.
Use for diagnosis, staging, monitoring, surveillance when supported by guideline timing/clinical context
Testing outside guideline‑supported contexts may not meet criteria.
References and guideline citations for covered indications
Refer to the evidence section for numbered references.
Permitted Measurement Frequencies
Procedure and Proprietary Codes
| 82105 | Alpha-fetoprotein (AFP); serum. |
| 82232 | Beta-2 microglobulin. |
| 82308 | Calcitonin. |
| 82378 | Carcinoembryonic antigen (CEA). |
| 83520 | Immunoassay for analyte other than infectious agent antibody or infectious agent antigen; quantitative, not otherwise specified. |
| 83521 | Immunoglobulin light chains (ie, kappa, lambda), free, each. |
| 83880 | Natriuretic peptide. |
| 83950 | Oncoprotein; HER-2/neu. |
| 84075 | Phosphatase, alkaline. |
| 84484 | Troponin, quantitative. |
| 0092U | Oncology (lung), three protein biomarkers, immunoassay using magnetic nanosensor technology, algorithm reported as risk score for likelihood of malignancy (REVEAL Lung Nodule Characterization; MagArray, Inc). |
| 0599U | Oncology (pancreatic cancer), multiplex immunoassay of ICAM1, TIMP1, CTSD, THBS1, and CA 19-9, serum, diagnostic algorithm reported as positive or negative. |
Provider Actions, Authorization, and Documentation
Confirm authorization and medical necessity before ordering
Services must meet authorization and medical necessity guidelines and are subject to the member’s benefit coverage at the time of request; providers must ensure ordered tumor marker testing aligns with medical necessity before submission.
- Application of criteria depends on the individual's benefit coverage at time of request.
- Quarterly measurement of designated serum biomarkers is permitted for follow-up/monitoring unless otherwise specified.
Verify PA and provide justification for proprietary/LDT tests
Proprietary or laboratory‑developed tests (e.g., Ova1Plus®, OvaWatch SM, BeScreened‑CRC) may require additional clinical documentation and payer review; verify prior authorization rules with the payer when ordering these assays.
- Document clinical indication and how the result will affect management when ordering proprietary/LDT tests.
- Ova1Plus® process may include reflex testing (Ova1 → Overa) as described by the test developer.
Obtain PA for panels or non‑guideline indications
Prior authorization may be required for multi‑biomarker panels or when testing is requested for indications not supported by NCCN guidance; for FDA‑approved ovarian risk assays (ROMA, OVA1, OVERA) coverage aligns with preoperative risk estimation when surgery is planned and the patient has not yet been referred to an oncologist.
- PA may be required for panels or non‑guideline indications.
- ROMA, OVA1, OVERA intended use: estimate ovarian cancer risk for patients with adnexal mass planned for surgery and not yet referred to an oncologist.
No additional PA rules in publication history
The policy text in the referenced publication history section contains no additional prior authorization requirements; rely on the specified prior_auth sections and payer rules instead.
- No PA requirements are specified in the publication/history section.
Follow reflex testing workflows for proprietary assays
Follow laboratory‑specified reflex testing algorithms when ordering proprietary assays that use reflex workflows (for example: Ova1 performed first with automatic reflex to Overa if Ova1 result is intermediate risk).
- Ova1 is performed first and Overa is automatically conducted if Ova1 result falls into an intermediate‑risk category.
- Follow the manufacturer's/laboratory's reflex algorithm when ordering.
Provide accurate documentation and correct coding
Submit accurate, complete documentation and use appropriate industry coding standards to support medical necessity and claims payment; providers are responsible for documentation and correct coding.
- Code and bill according to industry standards (CPT, HCPCS, ICD‑10 etc.).
- Accurate documentation is required to support medical necessity and payment; incorrect coding may lead to denial or recoupment.
Document indication and rationale for proprietary/LDT tests
When ordering proprietary or LDT tests, include the clinical indication, the test name, and a rationale describing how the result will impact patient management.
- Document indication, test name (e.g., BeScreened‑CRC, Ova1Plus®, OvaWatch SM), and expected management change.
- Provide clinical justification when clinical utility is described as emerging.
Document guideline‑aligned indication and care plan
Ensure documentation supports the clinical indication and alignment with guideline recommendations (for example, for adnexal mass testing document that surgery is planned and oncologic referral status).
- Document that adnexal mass testing is for a patient scheduled for surgery and not yet referred to a gynecologic oncologist when using ROMA/OVA1/OVERA.
- Cite guideline‑based rationale (e.g., NCCN Biomarkers Compendium) when ordering tests outside single‑marker indications.
Record clinical timing and surveillance intent for germ cell tumor markers
Document clinical details that support the specific testing indication—for example, suspected germ cell tumor, pre‑ or post‑orchiectomy status, chemotherapy timing, and surveillance intent when ordering AFP, hCG, or LDH.
- Record timing relative to orchiectomy and chemotherapy cycles when ordering AFP, hCG, LDH per ASCO guidance.
- Indicate surveillance intent and planned interval (ASCO supports surveillance up to 10 years with specified frequency).
Ensure testing aligns with guideline‑supported indications
Order tests so they align with guideline‑based indications (NCCN and other specialty guidance); tests used outside guideline‑supported contexts (e.g., routine screening where not recommended) may be denied or require justification.
- NCCN indicates ROMA/OVA1/OVERA have specific intended use and that the Panel does not recommend these tests for routine determination of adnexal/pelvic mass status.
- Use guideline citations to justify non‑routine orders.
Risk of denial for incorrect coding or insufficient documentation
Claims may be denied or recouped if coding/billing guidelines, reimbursement policies, or documentation are inaccurate or incomplete—ensure compliance with payer instructions and supporting records.
- Inaccurate coding or failure to follow billing guidelines can result in claim denial or recoupment.
- Maintain documentation to substantiate medical necessity and the chosen CPT/HCPCS codes.
Non‑covered markers may be denied
Requests for serum tumor markers not specifically addressed in this policy (alone or in a panel) are subject to non‑coverage and may be denied—order only markers/indications covered or provide strong guideline‑based justification.
- All other serum tumor markers not addressed in the policy (alone or in a panel) DO NOT MEET CRITERIA.
- Provide guideline citations when requesting tests outside listed indications.
Proteomic‑pattern screening is not covered
Testing based on analysis of proteomic patterns in serum for cancer screening or detection is not covered and will not meet criteria; do not submit claims for proteomic‑pattern screening without documented exception.
- Proteomic pattern analysis in serum for screening/detection DOES NOT MEET CRITERIA.
- Examples of proprietary proteomic screening tests are described as investigational and not covered.
Ordering and Test-Specific Requirements
Confirm benefit coverage and medical necessity before ordering
Application of the policy criteria depends on the individual's benefit coverage at time of request; services must meet authorization and medical necessity for the member's plan before being provided.
For proprietary/LDT tests, document indication and expected clinical impact
For proprietary/LDT tests, document the clinical indication and how the test result will change management; note that some proprietary tests employ reflex algorithms.
Order ovarian risk tests only for preoperative adnexal mass assessment
Order ovarian risk biomarker testing (ROMA/OVA1/OVERA) only when aligned with guideline recommendations—these tests are intended for patients with an adnexal mass when surgery is planned and prior to oncologist referral.
Document planned surgery when ordering ovarian risk assays
Certain proprietary ovarian‑risk tests are intended for preoperative risk estimation in patients planned for surgery; ensure the clinical scenario (adnexal mass with planned surgery) is documented when ordering.
No ordering‑provider restrictions specified
No specific ordering provider restrictions are stated in the referenced section of the document.
Not Covered / Investigational
Use of tumor markers for cancer indications not addressed in this policy, all other serum tumor markers not listed (alone or in a panel), and proteomic serum pattern analysis for cancer screening do not meet criteria. Testing should be limited to the covered indications and schedules provided in the policy.
Requests for serum tumor markers that are not specifically addressed by the policy — including proprietary proteomic-pattern screening tests presented as population screening tools — are subject to non-coverage. Proprietary/LDT assays used outside guideline-supported indications may require additional documentation and are frequently considered investigational for screening purposes.
Proteomic approaches remain under investigation; there is insufficient evidence to establish clinical validity and utility for routine coverage of proteomic-pattern–based serum assays for cancer detection or screening.
Routine use of nonspecific tumor markers (for example, CgA or pancreastatin for PNETs) is not supported by current guideline recommendations and is unlikely to be considered medically necessary when ordered for screening asymptomatic individuals or outside guideline-supported indications.
This section of the document contains supporting evidence references and the publication history. It does not add separate not-covered items beyond those specified in the coverage and not-medically-necessary sections.
Definitions and Abbreviations
Circulating tumor biomarkers are substances detected in blood or other body fluids that are produced by tumors or by the host in response to tumors. They can aid in detection, diagnosis, staging, and management for selected malignancies when used according to guideline-recommended indications and timing.
Background and Evidence Context
These markers include proteins and peptides (for example AFP, CEA, CA-series antigens, calcitonin, and others) measured in serum to provide diagnostic, prognostic, or monitoring information in specific clinical contexts. Their interpretation should consider underlying nonmalignant causes of elevation and recommended guideline uses.
Marker-specific indications including examples and surveillance intervals
Exact per‑marker frequencies are detailed in the policy marker sections.
The policy provides biomarker-specific evidence summaries for multiple analytes. Examples include ALP (useful in bone and liver disease workup), AFP and AFP-L3 (HCC detection and combined-model performance), PIVKA-II/DCP (combined with AFP in diagnostic models), beta-2 microglobulin (prognostic in multiple myeloma and lymphomas), and BNP/NT-proBNP (assessment of cardiac involvement in amyloidosis). These summaries underpin the marker-specific coverage statements and recommended surveillance intervals.
Policy Publication and Revision History
Original documentation created and governance approved for the policy (publication history entry).
AASLD Practice Guidance on hepatocellular carcinoma (Singal et al.) listed in evidence references (citation dated 2023-05-22).
The publication metadata notes prior authorization considerations and administrative requirements. While no specific prior authorization rules are listed in the cited evidence chunks, providers should verify member benefit and prior authorization requirements and supply documentation that supports medical necessity when submitting claims.
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