Corrosion of unspecified degree of left knee, sequela

This code indicates a long-term or residual effect from a burn or corrosion injury affecting the left knee, where the original degree of the burn is not specified. It signifies that the acute phase of the injury has passed, and the patient is now experiencing ongoing complications or lasting damage related to the initial corrosion.

Use this code when documenting a patient presenting with a current condition or complication (e.g., scarring, contracture, chronic pain, functional impairment) that is a direct result of a past corrosion injury to the left knee. This applies when the original injury's severity (first, second, or third degree) was not documented or is unknown.

• Always sequence this "S" code after the code(s) describing the specific sequela being treated.
• Ensure documentation clearly links the current condition to a previous corrosion injury of the left knee.
• Avoid using this code for acute corrosion injuries; instead, use the appropriate acute corrosion codes (T24.0-T24.3) with the initial encounter or subsequent encounter seventh character.