Corros unsp degree of unsp mult fngr (nail), inc thumb, subs

This code signifies a chemical burn affecting multiple fingers, including the thumb, where the specific degree of the burn is not documented. It indicates damage to the skin and potentially underlying tissues of the digits due to corrosive substances, without specifying the depth of the injury.

Apply this code for follow-up encounters when a patient presents with a previously diagnosed corrosion of multiple fingers, including the thumb, and the initial documentation did not specify the burn degree. This is appropriate for subsequent visits for wound care, assessment of healing, or management of complications related to the original chemical injury.

• Ensure the documentation clearly states "multiple fingers" and "thumb" are involved.
• Only use for subsequent encounters; an initial encounter would use the "A" seventh character.
• If the degree of corrosion is later identified, a more specific code should be used.