Corros first degree of single l finger except thumb, subs

This code signifies a superficial burn injury, specifically a first-degree corrosion, affecting a single finger on the left hand, excluding the thumb. The injury is limited to the outermost layer of skin, often presenting with redness and mild pain without blistering.

Apply this code when documenting follow-up care for a patient with a first-degree corrosive burn to a left finger (excluding the thumb). This includes subsequent evaluations, wound care, or monitoring of the healing process after the initial treatment.

• Ensure the documentation clearly specifies "left" finger and excludes the thumb.
• Verify the encounter is for follow-up care, not the initial treatment, due to the "D" seventh character.
• Confirm the burn is explicitly described as a "corrosion" and "first degree."