Corrosion of third degree of left palm, sequela

This diagnosis describes a severe chemical burn affecting the entire thickness of the skin and underlying tissues of the left palm, with the injury now presenting as a long-term complication or late effect. This indicates the acute phase of the corrosion has passed, and the patient is experiencing residual issues such as scarring, contractures, or chronic pain.

Apply this code when documenting a patient presenting for treatment of a sequela resulting from a third-degree chemical burn to the left palm. This would be appropriate for follow-up visits addressing chronic complications like scar revision, management of impaired function, or persistent pain related to the original injury.

• Always assign an external cause code (V00-Y99) to identify the circumstances of the corrosion.
• Do not use this code for acute or initial encounters of the chemical burn; reserve it for late effects.
• Consider additional codes for specific sequelae, such as scar contracture (L90.5) or chronic pain (G89.29).