Corrosion of third degree of unspecified wrist, sequela

This code signifies a deep tissue injury to an unspecified wrist, resulting from chemical exposure, where the damage extends through all layers of the skin and into underlying tissues. It represents the long-term effects or complications of such an injury, not the acute event itself.

Use this code when documenting the sequelae of a third-degree chemical burn (corrosion) to the wrist, such as scarring, contractures, or chronic pain, after the initial healing phase has passed. This code is appropriate for follow-up encounters addressing these persistent issues.

• Ensure documentation clearly indicates the injury is a "corrosion" (chemical burn) and not a thermal burn.
• Confirm the injury is to the wrist and the degree is specified as third-degree.
• The "S" in the seventh character indicates sequela; only use this for late effects of the injury.