Corrosion of unsp degree of back of left hand, init encntr

This code signifies damage to the back of the left hand caused by a corrosive substance, such as a strong acid or alkali, where the specific depth or severity of the burn is not documented. This type of injury can result in tissue destruction ranging from superficial irritation to deep necrosis.

Use this code for initial treatment of chemical burns to the dorsal aspect of the left hand when the medical record does not specify the degree (e.g., first, second, or third) of the corrosion. This applies to emergency department visits, initial physician consultations, or the first instance of care for the injury.

• Ensure the documentation explicitly states "left hand" and "back" or "dorsal aspect" to support this specific anatomical site.
• Only use this code for the initial encounter for this injury; subsequent care would require a different seventh character.
• If the degree of corrosion is documented, a more specific code from the T23.0-T23.3 series should be selected.