CPT code 54105 represents a diagnostic surgical procedure: a biopsy of the penis collecting deep skin lesion tissue for histopathologic evaluation. This code matters nationally because penile biopsies, while uncommon, are essential diagnostic steps for conditions ranging from inflammatory dermatoses to suspected malignancy; accurate coding ensures appropriate clinical documentation and claims processing across payers. Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will learn the clinical context for use of CPT code 54105, typical sites of service, and common documentation elements that support medical necessity. The publication summarizes payer coverage patterns and billing considerations, highlights national-level benchmarks where available, and outlines policy or coding updates that affect billing and reimbursement for penile biopsy procedures. When specific data points were not supplied in the input, the text notes that those data are not available. The goal is to give clinicians, billing professionals, and policy analysts a concise reference on the clinical purpose and billing context for CPT code 54105.