Corros third degree of single r finger except thumb, sqla

This code signifies a third-degree chemical burn affecting a single finger on the right hand, excluding the thumb, where the acute injury has healed and the patient is now experiencing a long-term complication or residual effect. A third-degree corrosion involves full-thickness tissue destruction, often leading to scarring, contractures, or other chronic issues.

Apply this code when documenting a patient presenting with a sequela (e.g., scar tissue, limited range of motion, chronic pain, disfigurement) resulting from a past third-degree chemical burn to a single right finger (not the thumb). This code is appropriate for follow-up encounters addressing these persistent complications, not the initial acute injury.

• Ensure the documentation clearly specifies a third-degree chemical burn and that the acute phase has passed, with a sequela now being treated.
• Verify the affected digit is a single right finger, excluding the thumb.
• Always use this "S" seventh character for sequelae, indicating a late effect of the initial injury.