Underdosing of keratolyt/keratplst/hair trmt drug, subs

This code signifies a patient's underdosing of medications or preparations used to treat skin conditions involving abnormal keratinization (keratolytics, keratoplastics) or for hair treatment, during a subsequent encounter for the same issue. Underdosing implies the patient received less than the prescribed amount, leading to a continued or worsening condition.

Use this code when documenting follow-up care for a patient whose skin or hair condition is not improving or is worsening due to insufficient intake of prescribed keratolytic, keratoplastic, or hair treatment drugs. This applies to situations where the patient is not adhering to the prescribed dosage regimen.

• Always use in conjunction with a code for the specific adverse effect or condition resulting from the underdosing.
• Ensure documentation clearly indicates "underdosing" and that this is a "subsequent encounter" for the same underdosing event.
• Distinguish from initial encounters (A), subsequent encounters (D), and sequela (S) for appropriate seventh character assignment.