Burn of unspecified degree of left thumb (nail), init encntr

This code signifies a burn injury to the left thumb, including the nail, where the specific depth or degree of the burn (e.g., first, second, or third degree) has not yet been determined or documented. It indicates the initial presentation of the patient for this burn injury.

Apply this code when a patient presents for the first time with a burn to their left thumb, and the medical record does not specify the burn's severity. This is common in emergency department settings or initial evaluations before a definitive burn depth assessment can be made.

• Only use for the initial encounter for treatment of this specific burn. Subsequent encounters will require a different seventh character.
• Ensure documentation explicitly states "left thumb" and that the burn degree is truly unspecified.
• If the burn degree is later determined, update the code to a more specific one (e.g., T23.212A for second-degree).