What is the correct CPT code for debridement of below knee amputation stump?

The correct CPT code for debridement of a below-knee amputation stump is typically 11042, which is used for debridement of subcutaneous tissue. If the debridement involves more extensive tissue layers, such as muscle or fascia, you might consider codes like 11043 or 11044 based on the depth and area involved. Always verify with the most recent coding guidelines or payer policies, as codes may vary based on specific circumstances or additional procedures performed.