Corrosion of third degree of right thumb (nail), sequela

This code indicates a third-degree chemical burn, also known as a corrosion, affecting the right thumb, including the nail. A third-degree burn involves full-thickness destruction of the skin and underlying tissue, often appearing leathery or charred. The 'S' suffix signifies that this code is for the sequela, meaning it's used for complications or conditions arising directly from the initial injury after the acute phase has passed.

Use this code when documenting the long-term effects or complications of a third-degree chemical burn to the right thumb. This includes conditions like scarring, contractures, chronic pain, or functional impairment that persist after the initial wound has healed. It would be appropriate for follow-up visits or when treating residual problems related to the original corrosion.

• Ensure documentation clearly states "sequela" or indicates a late effect of the original injury.
• Verify the burn was specifically due to a chemical agent (corrosion) and not thermal.
• Always code the specific site (right thumb) and degree (third) as documented.