Fine needle aspiration biopsy

• Material is aspirated with a fine needle and the cells are examined cytologically
• Core needle biopsy is performed with a larger bore needle to obtain a core sample
• Use code 10021 for FNA without imaging guidance, first lesion and 10004 for each additional lesions
• There are codes for FNA include imaging guidance
• Add-on codes for additional lesions, also defined by type of imaging guidance used for the procedure

Additional resources

• Billing Guide-Minor Surgical Procedures
• Using Modifier 59 | Reference Sheet
• Minor Procedures
• More