Non-prs chronic ulcer of skin of sites w necrosis of bone

This code signifies a chronic, non-pressure-related ulcer affecting the skin in an anatomical location other than those specifically classified, where the ulceration has progressed to involve necrosis of the underlying bone. This indicates a severe and deep tissue injury, often associated with compromised circulation or systemic disease, leading to bone death.

Apply this code when documentation clearly states a chronic skin ulcer, not caused by pressure, located on a site other than the ankle, heel, or sacrum, and explicitly mentions bone necrosis. This typically occurs in patients with conditions like severe peripheral vascular disease, diabetes, or other chronic illnesses that impair healing and lead to deep tissue destruction.

• Ensure documentation specifies "chronic" and "non-pressure" to differentiate from acute or pressure ulcers.
• Confirm the ulcer location is not one of the more specific sites (e.g., ankle, heel, sacrum) to justify "other sites."
• Always look for explicit mention of "necrosis of bone" to support the highest level of specificity for tissue involvement.