Corrosion of second degree of right thumb (nail), subs

This code signifies a second-degree chemical burn affecting the right thumb, including the nail, that is being treated after the initial encounter. A second-degree corrosion involves damage through the epidermis and into the dermis, typically presenting with blistering, pain, and redness.

Apply this code when documenting follow-up care for a patient whose right thumb has sustained a second-degree chemical burn. This includes subsequent wound care, evaluation of healing, or management of complications arising from the initial injury. It is appropriate for any encounter after the initial treatment of the corrosion.

• Ensure the documentation clearly specifies a chemical burn (corrosion) and not a thermal burn.
• Verify the laterality (right thumb) and the degree of the burn (second degree).
• Confirm that the encounter is for follow-up care, indicated by the "D" seventh character.