Underdosing of keratolyt/keratplst/hair trmt drug, sequela

This code signifies the long-term consequences or residual effects stemming from insufficient or inadequate administration of medications designed to treat skin conditions by softening or removing hardened skin (keratolytics), or agents used to promote healthy skin and hair growth (keratoplastics and other hair treatments). These sequelae are chronic conditions or permanent disabilities that arise directly from the underdosing event.

Apply this code when a patient presents with a current condition that is a direct result of a past underdosing of keratolytics, keratoplastics, or other hair treatment drugs. This typically involves chronic skin issues, hair loss, or other dermatological problems that persist due to the previous inadequate treatment. It should be used for the sequela itself, not the acute underdosing event.

• Always sequence this code after the code(s) identifying the specific sequela (e.g., chronic alopecia, persistent hyperkeratosis).
• Ensure documentation clearly links the current condition to a past underdosing of the specified drug categories.
• This "S" seventh character indicates sequela, meaning the patient is seen for the residual effect, not the active underdosing.