Corros unsp deg mult left fingers (nail), inc thumb, sequela

This code signifies a long-term complication or late effect resulting from a past corrosive injury that affected multiple fingers, including the thumb, on the patient's left hand. The specific degree of the original corrosion is not documented or is unknown. This sequela could manifest as scarring, contractures, chronic pain, or functional impairment.

Apply this code when documenting a current condition directly attributable to a previous corrosive burn to the left hand's multiple fingers and thumb. This is appropriate for follow-up encounters where the acute injury has healed, but residual effects persist. Examples include scar revision surgery or ongoing therapy for functional deficits stemming from the original corrosion.

• Always use a seventh character of 'S' for sequela when the acute injury has resolved.
• Ensure documentation clearly links the current condition to a past corrosive injury of the specified anatomical site.
• Do not use this code for acute corrosive injuries; those require codes with 'A' or 'D' seventh characters.