Corrosion of unsp degree of back of left hand, sequela

This code indicates a long-term complication or late effect resulting from a chemical burn (corrosion) on the back of the patient's left hand. The original burn's severity is not specified, and this code is used to report the residual problems after the acute phase of the injury has passed.

This code is appropriate when documenting conditions such as scarring, contractures, chronic pain, or functional impairment on the back of the left hand, directly attributable to a past chemical burn. It should be used for follow-up encounters when the initial injury has healed but its lasting effects are being treated or evaluated.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., scar, contracture).
• Do not use this code for the initial or acute treatment of the chemical burn itself.
• Ensure documentation clearly links the current condition to a previous chemical burn on the back of the left hand.