Blister (nonthermal) of left wrist, initial encounter

This code signifies a non-heat-related fluid-filled lesion on the left wrist. It indicates the initial presentation or active treatment phase of such an injury. This type of blister is typically caused by friction, pressure, or chemical exposure, rather than burns.

Apply this code when documenting a patient's first visit for a blister on their left wrist that is not due to a thermal injury. This includes blisters resulting from repetitive motion, tight clothing, or contact with irritants. It is appropriate for the initial evaluation and management of the injury.

• Ensure the documentation clearly specifies "left wrist" and confirms the non-thermal etiology.
• Verify that this is indeed the patient's initial encounter for this specific injury. Subsequent encounters would require a different seventh character.
• Look for details in the clinical notes regarding the cause of the blister to rule out thermal origins.