Headline: CPT code 87106 defines definitive laboratory identification of yeast isolates, a targeted microbiology test that refines presumptive findings to the species level. Lead: CPT code 87106 covers additional testing performed by a laboratory analyst to more specifically identify a yeast organism after a presumptive result. This code matters nationally because species-level identification can affect antifungal selection, infection control decisions, and diagnostic accuracy for inpatient and outpatient care.

CPT code 87106 represents a focused microbiology identification procedure used in clinical and hospital laboratories. It is relevant to hospital systems, reference laboratories, clinicians managing fungal infections, and payers overseeing laboratory benefit policies. Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will learn the clinical context for using 87106, typical sites of service, and what this code denotes for laboratory workflows. The publication provides benchmarks where available, summarizes common billing practices, and outlines policy considerations and coding context that affect reimbursement and claims processing. Data not available in the input will be noted where applicable. The content is intended for a national audience including coding professionals, laboratory managers, and payer policy teams.