Corrosion of second degree of right knee, sequela

This code signifies a long-term complication or residual effect stemming from a second-degree chemical burn (corrosion) that previously affected the right knee. These sequelae can include scarring, contractures, chronic pain, or functional limitations that persist after the initial injury has healed.

Use this code when documenting and billing for treatment of conditions directly resulting from a past second-degree chemical burn to the right knee. This applies to follow-up care for chronic issues, reconstructive surgery, or ongoing management of permanent damage. Do not use for the initial acute injury.

• Always sequence this sequela code after the code for the specific nature of the sequela (e.g., scar, contracture).
• Ensure documentation clearly links the current condition to the previous chemical burn of the right knee.
• The "S" in the 7th character indicates sequela and is mandatory for all encounters related to the late effects of the burn.