CPT code 82310 represents a laboratory assay for total serum calcium and is a common clinical chemistry test with broad national relevance. Measuring serum calcium is essential for diagnosing and monitoring disorders of calcium metabolism, including hypocalcemia and hypercalcemia, and for managing patients with renal disease, parathyroid disorders, and certain malignancies. As a frequently ordered lab test, 82310 drives laboratory utilization and influences outpatient and inpatient laboratory workflows.

Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for the test, typical sites of service where the assay is performed, and common operational considerations for billing and claim processing. The publication summarizes benchmarks and payment policy elements relevant to clinical laboratories and hospital labs, highlights coding and documentation priorities for accurate claims submission, and outlines where to look for payer-specific coverage and reimbursement guidance. Data not available in the input for specific payer rates, associated taxonomies, ICD-10 pairings, and related codes.