Underdosing of unspecified antidepressants, init encntr

This code signifies a patient presenting with adverse effects or worsening of their condition due to taking less than the prescribed or recommended dose of an unspecified antidepressant medication. This underdosing can lead to a recurrence or exacerbation of the underlying psychiatric disorder the antidepressant is intended to treat.

Apply this code when a patient is seen for the initial assessment and treatment of issues directly resulting from insufficient intake of an antidepressant, where the specific type of antidepressant is not documented. This includes situations where the patient intentionally or unintentionally took too little medication, leading to a return of symptoms.

• Ensure documentation clearly states "underdosing" and specifies an antidepressant, even if unspecified.
• This "initial encounter" character (A) is used for the first time the patient is seen for this specific underdosing event.
• Always code the underlying psychiatric condition for which the antidepressant was prescribed as a primary or secondary diagnosis.