Corros third degree of unsp single finger except thumb, sqla

This code signifies a healed or residual condition resulting from a full-thickness chemical burn to an unspecified single finger, excluding the thumb. The corrosion has damaged all layers of the skin, and the code indicates that the acute phase of the injury has passed, and the patient is now experiencing long-term effects or complications.

Apply this code when documenting the sequelae of a third-degree chemical burn to a finger (not the thumb) after the initial injury has been treated and the patient is presenting for follow-up care related to chronic issues such as scarring, contractures, or functional impairment. This code is appropriate for encounters addressing the lasting impact of the corrosion, not the initial acute injury.

• Ensure documentation clearly states the burn was chemical (corrosion) and third-degree.
• Confirm the injury is to a single finger, excluding the thumb, and the encounter is for a sequela.
• Always use the 7th character 'S' for sequela, indicating a late effect of the injury.