Currentblue cross blue shield - tennesseePolicy N/A

Serum Tumor Markers for Malignancies (Medicare Advantage, DSNP) – G2124

Defines which serum tumor marker tests are covered for specific cancer indications, permitted monitoring frequencies for many markers, and states that other/unlisted tumor markers or proteomic pattern analysis for screening are not covered. Includes applicable CPT/HCPCS codes and references.

Policy Summary

Payerblue cross blue shield - tennessee

PolicySerum Tumor Markers for Malignancies (Medicare Advantage, DSNP) – G2124

Policy CodePolicy N/A

Change TypeNo material change

Effective DateN/A

Next Review DateN/A

Key ActionEnsure laboratory orders/documentation specify the clinical indication matching the covered indications listed and adhere to stated surveillance frequencies.

SourceLink

POLICY UPDATE CHANGES

No material clinical/coverage changes in this update.

~30+Enumerated covered tumor markers/tests referenced

3Not-covered categories

20+CPT/HCPCS codes listed

multipleReferences cited

Coverage Summary

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

This policy covers the use of serum tumor markers for specified cancer indications and monitoring, with a mixed coverage stance: many commonly used serum markers are covered for enumerated diagnostic, staging, treatment monitoring, and surveillance indications when the criteria are met, while other uses and unlisted markers are not covered. The coverage approach and indications are based primarily on the NCCN Biomarkers Compendium and supporting NCCN guideline documents (see evidence sources).

Policy titleSerum Tumor Markers for Malignancies

PayerBlueCross BlueShield of Tennessee (Independent Licensee of the BCBS Association)

Policy codeG2124

StatusCURRENT

Effective date

Scope summaryDefines covered serum tumor marker tests for specific cancer indications, permitted monitoring/surveillance frequencies for many markers, lists applicable CPT/HCPCS codes, and states other/unlisted markers or proteomic serum pattern analysis for screening are not covered.

AFP surveillance thresholdEvery 3-6 months for 2 years, then every 6 months

beta-hCG monitoring thresholdNo more than weekly during and post treatment; follow-up no more than monthly for 12 months

CA 19-9 surveillance thresholdEvery 3-6 months for 2 years, then every 6-12 months up to 5 years (resected ampullary cancer, stage I-III)

Serum free light chain frequencySurveillance up to once per month (multiple myeloma)

Coding (CPT / HCPCS)

Listed CPT/HCPCS codes referenced for covered tumor marker testsmixedCovered

81479	Unlisted molecular pathology procedure
81599	Unlisted multianalyte assay with algorithmic analysis
82105	Alpha-fetoprotein (AFP); serum
82107	AFP-L3 fraction isoform and total AFP (including ratio)
82232	Beta-2 microglobulin
82308	Calcitonin
82378	Carcinoembryonic antigen (CEA)
83520	Immunoassay for analyte other than infectious agent antibody or infectious agent antigen; quantitative, NOS
83521	Immunoglobulin light chains, free, each
83615	Lactate dehydrogenase (LDH)

1–10 of 32

1/4

Note: The procedure code list includes several unlisted codes (for example, 81479, 81599, and 84999) as well as many specific CPT/HCPCS codes. Providers should select and report the most specific CPT or HCPCS code that corresponds to the tumor marker test performed and follow the Provider Actions billing instructions in the policy.

Provider Actions & Billing Guidance

Documentation Required

Apply indication-specific justification

Ensure laboratory orders and medical record documentation clearly state the clinical indication that matches the policy’s covered indications (for example: specific cancer type, intent—diagnostic vs surveillance, and disease stage) and document adherence to the stated surveillance frequencies.

Specify the clinical indication (cancer type, diagnostic vs surveillance, stage).
Document the surveillance frequency requested (e.g., interval and duration per policy).

Billing Rule

Use applicable CPT/HCPCS codes

Report the CPT or HCPCS procedure code that corresponds to the tumor marker assay performed using the codes listed in the policy (examples shown).

82105 — Alpha-fetoprotein (AFP); serum
86301 — CA 19-9 (immunoassay for tumor antigen, quantitative)
86304 — CA 125 (immunoassay for tumor antigen, quantitative)
82232 — Beta-2 microglobulin
82378 — Carcinoembryonic antigen (CEA)
83521 — Immunoglobulin light chains, free, each
83615 — Lactate dehydrogenase (LDH)
84484 — Troponin, quantitative
84702 — Gonadotropin, chorionic (hCG); quantitative
86300 — CA 15-3 (immunoassay for tumor antigen, quantitative)
86305 — HE4 (Human epididymis protein 4)
0092U — REVEAL Lung Nodule Characterization (proprietary)
0163U — BeScreened (colorectal screening, proprietary)
0404U — Divitum Tka (thymidine kinase activity, proprietary)
G0327 — Colorectal cancer screening; blood-based biomarker
81479 — Unlisted molecular pathology procedure
81599 — Unlisted multianalyte assay with algorithmic analysis

Denial Risk

Non-covered uses risk claim denial

Claims for tumor marker testing that do not match the policy’s enumerated indications or that involve unlisted markers or proteomic pattern analysis for cancer screening may be denied.

Examples at risk for denial: testing for cancer indications not enumerated in the policy.
Unlisted or other serum tumor markers not addressed in the policy (alone or in a panel).
Proteomic pattern analysis in serum for cancer screening (listed as not meeting coverage).

Documentation Required

Adhere to surveillance frequency limits

Do not order surveillance testing more frequently than the policy allows; document adherence to the specified maximum intervals for particular markers.

AFP (hepatocellular carcinoma): every 3–6 months for 2 years, then every 6 months.
Beta-hCG (gestational trophoblastic neoplasia): no more than weekly during and after treatment; follow-up no more than monthly for 12 months.
CA 19-9 (resected ampullary cancer, stage I–III): every 3–6 months for 2 years, then every 6–12 months up to 5 years.
Malignant germ cell tumors (surveillance): no more than every 2 months for first 2 years, every 4 months years 3–5, then annually.
Serum free light chain (multiple myeloma): surveillance up to once per month.
Troponin/Calcitonin post-op (medullary carcinoma): 2–3 months postoperative, then every 6–12 months.

Background & Evidence

Background: This policy was developed from the NCCN Biomarkers Compendium and related guideline sources to define covered serum tumor marker tests and indications. It addresses serum markers measured in blood/serum for detection, diagnosis, staging, and management of specified cancers. The policy recognizes that many laboratories use laboratory-developed tests (LDTs), which are regulated under CLIA as high-complexity tests; LDTs are not FDA approved or cleared, though FDA clearance is not required for clinical use.

Source	Details
Primary guideline source	NCCN Biomarkers Compendium (2023) - primary basis for covered serum tumor marker recommendations and indications
Supporting guideline examples	ASCO, ATA, AASLD, NANETS and multiple peer-reviewed references cited as supporting guideline examples and evidence
NCCN guidelines referenced	Multiple NCCN guideline documents (2023-2024) cited for specific cancers (multiple myeloma, amyloidosis, ovarian cancer, etc.) and biomarker uses
NCI tumor markers fact sheet	NCI Tumor Markers fact sheet (2023) referenced as an evidence-based resource

Definitions

Thresholds / Surveillance Frequencies

OpenPayer

Serum Tumor Markers for Malignancies (Medicare Advantage, DSNP) – G2124

Coverage Summary

Medical Necessity / Covered Indications

Not Covered / Does Not Meet Coverage Criteria

Coding (CPT / HCPCS)

Provider Actions & Billing Guidance

Background & Evidence

Revision History