CPT code 87556 represents an amplified nucleic acid probe test for Mycobacterium tuberculosis, a molecular diagnostic used to detect the genetic material of the tuberculous mycobacterium. Nationally, this code matters because rapid, specific molecular testing for tuberculosis supports timely diagnosis, infection control decisions, and appropriate public health reporting. It is a standard laboratory code for detecting acid-fast mycobacteria in clinical specimens.

Key payers in typical coverage discussions include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the assay, typical sites of service, and what to expect from payer coverage considerations. The publication reviews benchmark information where available, summarizes relevant clinical utility and testing workflows, and highlights common billing considerations tied to laboratory molecular diagnostics.

This resource is written for a national audience and provides practical reference material on clinical use, coding context, and payer engagement for organizations that perform or bill for molecular tuberculosis testing. Data not available in the input is identified explicitly in sections where specific payer policies, taxonomies, ICD-10 pairings, or related codes would normally appear.