Non-prs chr ulcer of r thigh with bone invl w/o evd of necr

This code signifies a persistent, non-pressure-related open sore on the right thigh that has progressed to involve the underlying bone. It indicates a deep ulceration where the bone is exposed or directly affected, but there is no evidence of tissue death or gangrene.

Use this code for patients presenting with a chronic ulcer on the right thigh, confirmed by imaging or surgical findings to have bone involvement. Documentation should clearly state the ulcer's chronicity, its location, the absence of pressure as an etiology, and the presence of bone involvement without necrosis.

• Differentiate from pressure ulcers (L89.-) and acute ulcers, which have different coding pathways.
• Ensure documentation explicitly states "bone involvement" and "without necrosis" to support this specific code.
• Always sequence this code after the underlying cause of the ulcer, if known (e.g., diabetes, peripheral vascular disease).