CPT code 86341 designates an immunology laboratory assay that detects and measures islet cell antibodies in patient blood, most commonly used to differentiate type 1 diabetes from type 2 diabetes and to guide endocrine disorder management. Nationally, this code supports diagnostic workflows that influence treatment decisions, enrollment in diabetes management programs, and eligibility for certain specialty services.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the test, typical sites of service, payer coverage considerations, and commonly associated billing modifiers. The publication outlines benchmarks for utilization and reimbursement patterns where available and summarizes relevant policy or coverage updates that affect laboratory-based autoimmune testing.

This analysis is intended for clinicians, laboratory managers, and billing professionals seeking a national overview of the clinical purpose, billing considerations, and payer landscape for CPT code 86341. Data not available in the input are noted where applicable.