Non-prs chr ulc skin/ oth site with bne invl w/o evd of necr

This code signifies a persistent skin ulcer, not caused by pressure, located on an unspecified body site, where the underlying bone is affected but there is no evidence of tissue death. It describes a deep, non-healing wound that has progressed to involve osseous structures.

Use this code for chronic skin ulcers (e.g., venous stasis ulcers, arterial ulcers, diabetic ulcers) that have eroded down to the bone, provided the ulcer is not a pressure ulcer and there is no documented necrosis. Documentation must clearly state bone involvement and absence of necrosis.

• Ensure documentation specifies "other sites" and explicitly states bone involvement without necrosis.
• Distinguish carefully from pressure ulcers (L89.-) and ulcers with necrosis (L97.-, L98.4- with necrosis).
• Always code the underlying cause of the ulcer (e.g., diabetes mellitus, chronic venous insufficiency) as a primary or secondary diagnosis.