Corros third degree of single r finger except thumb, subs

This code signifies a severe chemical burn, specifically a third-degree corrosion, affecting a single finger on the right hand, excluding the thumb. The injury involves the full thickness of the skin and underlying tissue, potentially including the nail. This particular code is designated for encounters following the initial treatment of the corrosion.

Apply this code when documenting follow-up care, such as wound checks, dressing changes, or evaluation for grafting, for a third-degree chemical burn to a single right finger (not the thumb). It is appropriate for subsequent visits after the initial emergency room or acute care treatment has been rendered.

• Ensure the documentation clearly specifies "corrosion" (chemical burn) rather than a thermal burn.
• Verify the laterality is "right" and the affected digit is a single finger, excluding the thumb.
• Confirm the encounter is for follow-up care, indicated by the "D" seventh character.