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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-001 Vitamin D Testing

Vitamin D is a precursor to steroid hormones and plays a key role in calcium absorption and mineral metabolism.

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-005 Diagnostic Testing of Iron Homeostasis & Metabolism

Iron, an essential nutrient with a variety of biological uses, is tightly regulated in vivo to maintain homeostasis.

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-006 Vitamin B12 and Methylmalonic Acid Testing

Vitamin B12, also known as cobalamin, is a water-soluble vitamin required for proper red blood cell formation, key metabolic processes, neurological function, and DNA regulation and synthesis.

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-012 Pathogen Panel Testing

Infectious diseases can be caused by a wide range of pathogens. Conventional diagnostic methods like culture, microscopy with or without stains and immunofluorescence, and immunoassay often lack sensitivity and specificity and have long turnaround times.

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-023 Diabetes Mellitus Testing

Diabetes describes several heterogeneous diseases in which various genetic and environmental factors can result in the progressive loss of β-cell mass and/or function that manifests clinically as hyperglycemia (Skyler et al., 2017).

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-029 Testosterone Testing

Testosterone is a naturally occurring lipophilic androgen hormone that is produced by both males and females for various functions.

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-036 Immune Cell Function Assay

Immune cell function assays involve measurement of peripheral blood lymphocyte response (intracellular ATP levels, proliferation) following stimulation to assess the degree of functionality of the cell-mediated immune response (Buttgereit et al., 2000)

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-038 Immunohistochemistry

Immunohistochemistry (IHC) is a very sensitive and specific staining technique that uses anatomical, biochemical, and immunological methods to identify cells, tissues, and organisms by the interaction of target antigens with highly specific monoclonal antibodies and visualization though the use of a biochemical tag or label (Fitzgibbons et al., 2014)

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-065 Diagnosis of Idiopathic Environmental Intolerance

Idiopathic environmental intolerance (IEI), formerly called multiple chemical sensitivity (MCS), is a subjective condition characterized by recurrent, nonspecific symptoms attributed to low levels of chemical, biologic, or physical agents in the absence of consistent objective diagnostic physical findings or laboratory tests that define an illness (AAAAI, 1999; ACOEM, 1999; Black & Temple, 2024).

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-079 Coronavirus Testing in the Outpatient Setting

Human coronaviruses, first characterized in the 1960s, are named based on the spiked proteins located on their surface.

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-082 Testing of Homocysteine Metabolism-Related Conditions

Homocystinuria is a metabolic condition in which the body is unable to properly process certain amino acids, resulting in an abnormal accumulation of homocysteine and its metabolites in the blood and urine (NIH, 2023).

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Compliance, Regulatory & Policies - Policy, Billing, or Coverage Update - 2025
Reimbursement Policy: PO-RE-133 Therapeutic Drug Monitoring for 5-Fluorouracil

Chemotherapeutic agents are incredibly potent drugs, often carrying cytotoxic side effects. Most chemotherapeutic drugs have a steep dose-response relationship and a narrow therapeutic index (a range where an agent provides therapeutic effect without major side effects).

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