Open bite of left index finger w/o damage to nail, init

This code signifies an open wound on the left index finger, specifically caused by a bite, where the nail itself has not been injured. The wound penetrates the skin, exposing underlying tissue, and is being addressed for the first time.

Apply this code when documenting an initial presentation of a patient with a bite wound to their left index finger. This is appropriate for animal bites, human bites, or any other bite that results in an open wound without associated nail damage.

• Ensure the documentation clearly specifies the left index finger and confirms the absence of nail damage.
• Verify this is the patient's initial encounter for this specific injury; subsequent care would require a different encounter character.
• Always code the external cause of the bite (e.g., W54.0XXA for dog bite) in addition to this diagnosis code.