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Blue Cross and Blue Shield of Illinois policies

Search Blue Cross and Blue Shield of Illinois's public medical, payment and drug policies by CPT or HCPCS code, keyword or policy number, with links to the payer's own documents. Links open the payer's own document; check its current version before relying on it.

4 policies name 83921, those listing the fewest codes first. A policy that names a code may also list it as excluded.

Blue Cross and Blue Shield of Illinois policies
PolicyDetailsCodesSource
Vitamin B12 and Methylmalonic Acid TestingCPCPLAB010 · Effective May 1, 2026 · Commercial, Medicaid · IL4Original policy ↗
Testing of Homocysteine Metabolism-Related ConditionsCPCPLAB067 · Effective May 1, 2026 · Commercial, Medicaid · IL6Original policy ↗
Diagnosis of Idiopathic Environmental IntoleranceCPCPLAB023 · Effective May 1, 2026 · Commercial, Medicaid · IL42Original policy ↗
Medical Policies Moving to MCG GuidelinesADM1001.036 · Commercial, Medicaid303Original policy ↗

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Disclaimer

The information provided on this page is for general informational purposes only and does not constitute billing, coding, or reimbursement advice. Nothing on this page should be relied upon as a substitute for clinician assessment, professional billing guidance, or as a definitive statement of any payor's billing requirements or policies.

Payor agreements, fee schedules, and billing policies vary and are subject to change. Before submitting any claims related to maternity care services, including claims affected by the 2027 CPT code revisions, please consult the applicable payor agreements, coverage policies, and billing guidelines to confirm current requirements for their specific payor contracts.

Substrate makes no representation or warranty regarding the accuracy, completeness, or timeliness of the payor-specific information presented here. Providers are solely responsible for ensuring that all claims are submitted in accordance with applicable payor requirements, and Substrate assumes no liability for claim denials, underpayments, or other adverse outcomes arising from reliance on this information.

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