Corrosion of third degree of unspecified forearm, sequela

This code signifies a past, resolved third-degree chemical burn (corrosion) affecting an unspecified area of the forearm, where the patient is now experiencing a late effect or complication directly attributable to that original injury. Third-degree corrosions involve full-thickness skin destruction, often extending into subcutaneous tissue. The "sequela" indicates that the acute injury has healed, but its long-term consequences are now being addressed.

Apply this code when documenting the treatment or management of a chronic condition, scar tissue, contracture, nerve damage, or other lasting complication resulting from a third-degree chemical burn to the forearm that occurred in the past. This code is appropriate when the patient presents for follow-up care specifically related to these long-term effects, rather than 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 a previously sustained third-degree corrosion of the forearm.
• Avoid using this code for acute or active third-degree corrosions; those require acute burn codes.