Expsr to unsp man-made visible and ultraviolet light, subs

This code signifies a follow-up encounter for an injury or condition resulting from exposure to an unidentifiable source of artificial visible or ultraviolet light. This could include effects such as burns, eye damage, or other adverse reactions where the specific type of man-made light is not documented.

Apply this code when a patient presents for ongoing care, evaluation, or treatment of a condition previously diagnosed as being caused by an unspecified man-made visible or UV light source. This is appropriate for subsequent visits after the initial injury or diagnosis.

• Ensure documentation clearly indicates a "subsequent encounter" for the light exposure-related condition.
• Only use this code when the specific type of man-made visible or UV light source cannot be determined from the medical record.
• Always sequence this code as a secondary diagnosis, following the primary diagnosis for the specific injury or condition caused by the exposure.