Corrosion of third degree of left hand, unsp site, sequela

This code signifies a third-degree burn (corrosion) affecting the left hand, where the specific location on the hand is not documented. A third-degree burn involves full-thickness skin destruction, often extending into subcutaneous tissue, and is characterized by a dry, leathery appearance and lack of sensation. The "S" indicates that this code is for a sequela, meaning it represents a late effect or complication of the original injury.

This code is used when a patient presents with a long-term complication or residual condition directly resulting from a third-degree corrosion injury to the left hand that occurred in the past. Examples include chronic pain, scarring, contractures, or functional limitations that are a direct consequence of the original burn. It should be assigned after the acute phase of the injury has passed.

• Always use an external cause code (V00-Y99) in conjunction with sequela codes to describe the circumstances of the original injury.
• Ensure documentation clearly states the injury is a "sequela" or "late effect" and specifies the left hand as the affected area, even if the exact site on the hand is not specified.
• Do not use this code for acute third-degree burns; use the appropriate acute burn code from the T23 category for initial encounters.