Non-prs chronic ulcer of unsp up arm with fat layer exposed

This code signifies a persistent, non-pressure-related open sore on an unspecified part of the upper arm where the ulceration has progressed through the skin layers to expose subcutaneous fat. It indicates a deep tissue loss that is not caused by sustained pressure.

Use this code for chronic ulcers of the upper arm that are not pressure-related and where the medical record clearly documents exposure of the fat layer. This applies to conditions such as venous stasis ulcers, arterial ulcers, or neuropathic ulcers affecting the upper arm, provided the depth of tissue loss is specified.

• Ensure documentation specifies "chronic" and "non-pressure" to differentiate from acute ulcers or pressure ulcers.
• Verify the anatomical site is "upper arm" and the depth explicitly states "fat layer exposed."
• Do not use if muscle, tendon, or bone is exposed; a more specific code for deeper tissue involvement would be required.