Corrosion of second degree of unspecified lower leg, sequela

This code signifies a second-degree chemical burn (corrosion) affecting an unspecified area of the lower leg, where the acute injury has healed and the patient is now presenting with a residual condition or late effect. This could include scarring, contractures, or chronic pain directly resulting from the original chemical burn.

Use this code when documenting a patient encounter for a long-term complication or sequela stemming from a second-degree chemical burn to the lower leg. This is appropriate when the initial burn has resolved, and the current treatment addresses a persistent issue caused by that burn.

• Requires a seventh character "S" to indicate sequela, meaning the initial injury has healed.
• Do not use for acute chemical burns; those require codes from the T24.2-T24.3 series with appropriate seventh characters for initial or subsequent encounters.
• Always code the specific sequela (e.g., scar, contracture) first, followed by this code to indicate the cause.