Corrosion of unsp degree of forehead and cheek, sequela

This code signifies a long-term consequence or scar from a chemical burn of indeterminate severity affecting the forehead and/or cheek. It indicates that the acute injury has healed, but residual effects, such as scarring, altered skin texture, or chronic pain, are present.

Apply this code when documenting a patient presenting with a sequela (e.g., scar, disfigurement, chronic pain) directly attributable to a past chemical burn of the forehead or cheek, where the original burn's depth was not specified or is unknown. This is appropriate for follow-up visits addressing these lasting effects, not the initial acute injury.

• Always use an external cause code (V00-Y99) in conjunction with this code to describe the circumstances of the injury.
• Ensure documentation clearly links the current condition to a previous chemical burn of the specified anatomical sites.
• Do not use this code for acute chemical burns; use the appropriate T20.46XA or T20.46XD codes for initial or subsequent encounters, respectively.