Headline: CPT code 61140: Skull biopsy for diagnostic tissue sampling

Lead: CPT code 61140 denotes a neurosurgical skull biopsy procedure in which the provider drills skull openings to remove a small piece of abnormal intracranial tissue for diagnostic testing. The code captures a focused, invasive diagnostic service that influences downstream pathology, oncology, and neurosurgical care.

What the code represents and why it matters: CPT code 61140 identifies a targeted surgical biopsy of brain or adjacent intracranial tissue. As an invasive diagnostic procedure, it is integral to establishing definitive diagnoses for masses, infections, or unclear neurologic lesions and often directs significant clinical and resource decisions, including oncology treatment planning and further neurosurgical intervention.

Key payers covered: Analysis includes coverage and payment patterns from major national payers: Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

What readers will learn: This brief outlines the clinical context for use of CPT code 61140, typical sites of service, payer coverage considerations, and the types of benchmarks and policy elements that affect billing and utilization. Readers will find an overview of reimbursement themes, relevant documentation expectations, and areas where policy updates or payer edits commonly arise.

Scope: Content is written for a national audience and focuses on clinical and administrative aspects of the code, with data availability noted where input was not provided.