Chronic ulcer of other specified sites

This code signifies a long-standing open sore or lesion on the skin or mucous membrane that is not healing, located in an area other than those specifically categorized elsewhere (e.g., pressure ulcer, varicose ulcer). It implies a persistent breakdown of tissue due to various underlying factors, excluding acute or traumatic wounds.

Apply this code when documentation specifies a chronic ulcer in a location such as the ear, nose, lip, or trunk, and the specific type of ulcer (e.g., decubitus, varicose, diabetic) is not identified or is ruled out. Supporting documentation should clearly state "chronic ulcer" and specify the anatomical site.

• Ensure the documentation explicitly states "chronic" to differentiate from acute ulcers.
• Avoid using this code if a more specific chronic ulcer code (e.g., pressure ulcer, varicose ulcer, diabetic ulcer) is applicable.
• Always query for a more specific site or etiology if the documentation is vague (e.g., "chronic skin ulcer").