Underdosing of antiparkns drug/centr muscle-tone depr, init

This code indicates that a patient has intentionally or unintentionally taken less than the prescribed amount of medication used to treat Parkinson's disease or other conditions requiring central muscle-tone depression. This underdosing can lead to worsening symptoms or a lack of therapeutic effect from the medication.

Use this code when documenting a patient encounter where the primary reason for presentation is the underdosing of antiparkinsonism drugs or other central muscle-tone depressants. This includes situations where the patient admits to taking less than prescribed, or when clinical signs and symptoms suggest insufficient medication intake.

• Always assign an additional code for the specific adverse effect or manifestation of the underdosing.
• Distinguish between underdosing (taking less than prescribed) and noncompliance (not taking the medication at all).
• The "A" seventh character indicates an initial encounter for this underdosing event.