Corros 3rd deg mu right fingers (nail), inc thumb, sequela

This code describes the long-term effects or complications resulting from a third-degree chemical burn affecting multiple fingers, including the thumb, on the right hand. A third-degree burn involves full-thickness tissue destruction, extending through all layers of the skin and potentially into underlying structures. "Corrosion" specifically indicates a chemical burn.

Use this code when documenting a patient presenting with a sequela (e.g., scarring, contracture, functional impairment, chronic pain, or non-healing ulcer) directly attributable to a past third-degree chemical burn of multiple right fingers, including the thumb. This code is appropriate for follow-up care after the initial acute injury has healed.

• Requires a seventh character "S" to indicate sequela, meaning the patient is being seen for a complication or late effect of the original injury.
• Do not use for initial encounters or subsequent encounters for active treatment of the acute burn; those require different seventh characters.
• Always code the specific sequela (e.g., scar, contracture) first, followed by this code to indicate the cause.