Non-prs chronic ulcer oth prt unsp foot w necrosis of bone

This code signifies a persistent, non-pressure-related ulcer located on an unspecified area of the foot, excluding the heel, that has progressed to involve bone necrosis. This indicates severe tissue destruction extending beyond skin and subcutaneous layers.

Apply this code when documentation clearly states a chronic, non-pressure ulcer on any part of the foot (other than the heel) and explicitly mentions necrosis of the underlying bone. This is typically seen in patients with severe peripheral vascular disease, diabetes, or neuropathic conditions.

• Ensure documentation specifies "non-pressure" to differentiate from pressure ulcers.
• Verify the ulcer location is "other part of foot" and not a specific toe or the heel, which have their own codes.
• Confirm the presence of "necrosis of bone" as this specifies the highest level of tissue involvement for this ulcer type.