Corrosion of third degree of neck, sequela

This code signifies a deep tissue injury to the neck resulting from a corrosive substance, such as a strong acid or alkali, where the full thickness of the skin and underlying tissues are damaged. It specifically indicates that this injury is a long-term complication or residual effect of an initial corrosive burn.

Apply this code when documenting a patient presenting with a chronic or residual condition directly attributable to a third-degree corrosive burn of the neck. This would include scarring, contractures, or other permanent tissue damage that occurred as a consequence of the initial injury.

• Requires a seventh character "S" to denote sequela, indicating a late effect of the initial injury.
• Do not use for acute corrosive burns; those require an initial encounter or subsequent encounter seventh character.
• Always code the specific nature of the sequela (e.g., scar, contracture) in addition to this code, if applicable.