Underdosing of unsp antieplptc and sed-hypntc drugs, sequela

This code signifies a patient experiencing an adverse effect due to taking less than the prescribed or recommended dose of an antiepileptic or sedative-hypnotic medication. It indicates that the underdosing has led to a medical consequence, such as a seizure breakthrough or worsening of a psychiatric condition.

Apply this code when a patient presents with symptoms or conditions directly attributable to not taking enough of their antiepileptic or sedative-hypnotic medication. This often occurs in cases of non-compliance, medication access issues, or misunderstanding of dosing instructions, leading to a sequela.

• Always use this code as a secondary diagnosis, following the code for the specific condition or symptom resulting from the underdosing (e.g., seizure, anxiety exacerbation).
• Ensure documentation clearly links the patient's current condition to the underdosing of an antiepileptic or sedative-hypnotic drug.
• The "S" in the 7th character indicates a sequela, meaning it's used for complications or conditions arising as a direct result of the underdosing, even if the initial event has passed.