Corrosion of third degree of back of right hand, sequela

This code signifies a third-degree chemical burn (corrosion) affecting the back of the patient's right hand, where the acute injury has healed and the patient is now presenting for treatment of a residual condition or complication directly resulting from that past injury. Third-degree burns involve full-thickness destruction of the skin, often extending into subcutaneous tissue.

Apply this code when documenting care for long-term effects such as scarring, contractures, chronic pain, or nerve damage on the back of the right hand, directly attributable to a previously sustained third-degree chemical burn. This code is appropriate for follow-up encounters after the initial healing phase of the acute injury.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., scar, contracture).
• Ensure documentation clearly links the current condition to the past third-degree corrosion of the right hand.
• Do not use this code for the initial or acute treatment of the third-degree chemical burn; use the acute injury code instead.