Underdosing of unspecified psychodysleptics, init

This code signifies a patient experiencing adverse effects or complications due to taking less than the prescribed or recommended amount of an unspecified hallucinogenic substance. This underdosing can lead to a return of symptoms the medication was intended to treat or other negative health outcomes.

Use this code when a patient presents for initial treatment of issues arising from insufficient intake of a hallucinogen, and the specific type of hallucinogen is not documented. This includes situations where a patient self-reduced their dose, forgot to take a dose, or was inadvertently given an inadequate amount.

• Ensure documentation clearly states "underdosing" and specifies a hallucinogen, even if unspecified.
• This "initial encounter" indicator is used for the first time the patient is receiving active treatment for the underdosing.
• Always look for more specific codes if the type of hallucinogen is identified in the medical record.