Corrosion of second degree of trunk, unsp site, sequela

This code signifies a second-degree chemical burn (corrosion) affecting the trunk, where the specific location on the trunk is not documented. It is used to report the long-term effects or complications arising from such an injury, not the initial acute burn.

Apply this code when a patient presents with a sequela (e.g., scarring, contracture, chronic pain, disfigurement) resulting from a previously sustained second-degree chemical burn to an unspecified area of the trunk. This code is appropriate for encounters addressing the residual effects after the acute phase of the burn has healed.

• Always use an external cause code (V00-Y99) in conjunction with this code to describe the circumstances of the injury.
• Do not use this code for acute burns; instead, use the appropriate T21.2- or T21.3- codes for current second-degree chemical burns.
• Ensure documentation clearly supports the "sequela" aspect, indicating that the current encounter is for a late effect of the original injury.