CurrentBlue Cross Blue Shield - OklahomaPolicy CPCPLAB023

Diagnosis of Idiopathic Environmental Intolerance laboratory testing reimbursement

This policy governs reimbursement for laboratory testing related to diagnosis and evaluation of idiopathic environmental intolerance and related laboratory profiles for Blue Cross Blue Shield of Oklahoma members; it affects providers submitting claims to BCBSOK.

Policy Summary

PayerBlue Cross Blue Shield - Oklahoma

PolicyDiagnosis of Idiopathic Environmental Intolerance laboratory testing reimbursement

Policy CodePolicy CPCPLAB023

Change TypeNo material change

Effective DateApr 29, 2024

Next Review DateN/A

Key ActionUpon request, submit any additional documentation; claims are subject to review and code edits per plan documents and provider contract.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

multipledistinct test groups denied

10+procedure codes listed

unit limits for 10 codesunit maximums

04/29/2024policy effective

Reimbursement Exclusions and Coverage Criteria

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.

Reimbursement exclusions for IEI-related and related laboratory testing

The policy lists specific laboratory tests and test categories that are not reimbursable either in all circumstances or for asymptomatic/general encounters.

Laboratory tests designed to confirm the diagnosis of idiopathic environmental illness are not reimbursable in all circumstances.

Screening of blood, saliva, serum, plasma, urine, and/or stool samples for volatile solvents, organic acids, and organophosphates is not reimbursable in all circumstances.

Profiling of phthalates and parabens using blood, serum, plasma, saliva, urine, and/or stool samples is not reimbursable in all circumstances.

FOR ASYMPTOMATIC INDIVIDUALS: Profiling of chlorinated pesticides (including DDE and DDT) using blood, serum, plasma, saliva, urine, and/or stool samples is not reimbursable for asymptomatic individuals.

FOR ASYMPTOMATIC OR GENERAL ENCOUNTERS WITHOUT ABNORMAL FINDINGS: Testing of blood, serum, plasma, saliva, urine, and/or stool samples for carnitine sufficiency, oxidative stress and antioxidant sufficiency, detoxification adequacy, methylation sufficiency status, lipoic acid and CoQ10 sufficiency, and/or intestinal hyperpermeability is not reimbursable.

FOR ASYMPTOMATIC OR GENERAL ENCOUNTERS WITHOUT ABNORMAL FINDINGS: Testing of blood, serum, plasma, saliva, urine, and/or stool samples for vitamin sufficiency, mineral sufficiency, and/or nutritional analysis is not reimbursable.

The use of a breath hydrogen and/or breath methane test is not reimbursable to assess or diagnose: idiopathic environmental intolerance; food allergies and sensitivities; carbohydrate sensitivity or intolerance; bacterial overgrowth (including small intestinal bacterial overgrowth); digestive disorders; constipation, diarrhea, or flatulence; neurological/neuromuscular disorders; rosacea; obesity; or when used as part of a wellness visit/general encounter without abnormal findings.

FOR ASYMPTOMATIC OR GENERAL ENCOUNTERS WITHOUT ABNORMAL FINDINGS: Testing of blood, serum, urine, cerebrospinal fluid, fingernails, hair, and/or stool samples for metals is not reimbursable.

CPT/HCPCS Codes and Unit Rules

Selected lab CPT codes with unit rulesCPTCovered

83918	Organic acids; total, quantitative, each specimen
83919	Organic acids; qualitative, each specimen
83921	Organic acid, single, quantitative
82127	Amino acids; single, qualitative, each specimen
82136	Amino acids, 2 to 5 amino acids, quantitative, each specimen
82139	Amino acids, 6 or more amino acids, quantitative, each specimen
84585	Vanillylmandelic acid (VMA), urine
83150	Homovanillic acid (HVA)
83497	Hydroxyindolacetic acid, 5-(HIAA)
82656	Elastase, pancreatic (EL-1), fecal, qualitative, or semi-quantitative

Additional listed codes (inclusion not guarantee of coverage)mixed

S3708

Miscellaneous lab or related code included in list

Per‑date‑of‑service unit maximums — CPT code limits

83918Organic acids; total, quantitative, each specimen — maximum 2 units per date of service ALLOWED.

83919Organic acids; qualitative, each specimen — maximum 1 unit per date of service ALLOWED.

83921Organic acid, single, quantitative — maximum 2 units per date of service ALLOWED.

82127Amino acids; single, qualitative, each specimen — maximum 1 unit per date of service ALLOWED.

82136Amino acids, 2 to 5 amino acids, quantitative, each specimen — maximum 2 units per date of service ALLOWED.

82139Amino acids, 6 or more amino acids, quantitative, each specimen — maximum 2 units per date of service ALLOWED.

84585Vanillylmandelic acid (VMA), urine — maximum 1 unit per date of service ALLOWED.

83150Homovanillic acid (HVA) — maximum 1 unit per date of service ALLOWED.

83497Hydroxyindolacetic acid, 5-(HIAA) — maximum 1 unit per date of service ALLOWED.

82656Elastase, pancreatic (EL-1), fecal, qualitative, or semi-quantitative — maximum 1 unit per date of service ALLOWED.

Provider Responsibilities and Claim Handling

Documentation Required

Submit additional documentation upon request

Upon request, the provider is urged to submit any additional documentation to support the medical necessity and coding of billed services; providers are responsible for submission of accurate documentation of services performed.

Submit documentation when requested to support billed services and medical necessity.
Use valid HIPAA‑approved code sets and code claims according to industry standard coding guidelines.

Billing Rule

Claims subject to code edits and review

Claims are subject to code edit protocols and may be reviewed against benefit coverage, provider contract language, medical policies, and coding software logic; providers must code appropriately and be aware that claims may be processed with code edits.

Claims should be coded using valid code combinations from HIPAA‑approved code sets and according to industry coding guidelines.
Claim submissions are subject to review including benefit terms, provider contracts, clinical payment and coding policies, and CCI/code edit logic.

Plan Documents and Governing Coverage

Plan documents

Plan documents (governing order)Certificates of Health Care Benefits, benefit booklets, Summary Plan Descriptions, and other coverage documents govern member benefits and will control if they conflict with this policy.

Plan document review recommendedProviders are urged to review plan documents for eligible coverage as not all policy requirements apply to every product.

Policy vs. provider contractIf a conflict arises between this policy and a provider contract, the provider contract will govern.

BCBSOK discretionBlue Cross and Blue Shield of Oklahoma may use reasonable discretion interpreting and applying this policy; BCBSOK has final discretionary authority to the extent provided under applicable plan documents.