Non-prs chr ulc unsp prt of unsp low leg w fat layer exposed

This code signifies a persistent open sore on an unspecified part of the lower leg that is not caused by pressure. The ulceration extends through the epidermis and dermis, exposing the subcutaneous fat layer. It indicates a chronic wound of unknown etiology and location on the lower leg.

Use this code for documentation of a chronic lower leg ulcer where the specific anatomical site (e.g., calf, ankle) is not specified, and the underlying cause is not attributed to pressure. This code is appropriate when the medical record clearly states "fat layer exposed" or similar terminology indicating penetration to the subcutaneous tissue.

• Avoid using this code if the specific anatomical location on the lower leg is documented; instead, use a more precise L97 subcategory.
• Ensure documentation explicitly states "non-pressure" and "fat layer exposed" to support this level of specificity.
• Do not use for ulcers caused by pressure; refer to the L89 category for pressure ulcers.