Corros first degree of single l finger except thumb, init

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 involves only the outermost layer of skin, often presenting with redness and mild pain without blistering or skin breakage.

Apply this code when documenting a first-degree chemical burn to a single left finger (e.g., index, middle, ring, or little finger), including the nail, during the initial treatment encounter. This would include scenarios like a mild acid splash or contact with a corrosive substance causing only erythema.

• Ensure the documentation specifies "first degree" and "corrosion" (chemical burn) rather than a thermal burn.
• Verify the affected digit is a single left finger, not the thumb, and that it's the initial encounter for this specific injury.
• Distinguish from thermal burns (T23.1xx) and more severe degrees of corrosion.