Fine Needle Aspiration Biopsy ProceduresPercutaneous fine needle aspiration biopsy services for cytology sampling of lesions such as thyroid, breast, lymph nodes, and superficial soft tissue. CPT codes 10004–10021 comprise the fine needle aspiration subset within the range, detailing code-level variations by site and single versus multiple passes.Codes 10004–10021Total Codes: 10Updated 5/4/2026Standalone