Underdosing of opium, initial encounter

This code signifies a patient experiencing adverse effects due to taking less opium than prescribed or indicated, leading to a therapeutic failure or worsening of their underlying condition. It indicates that the underdosing is the primary reason for the current encounter and the patient is actively receiving treatment for these effects.

Apply this code when a patient presents with symptoms or complications directly attributable to insufficient opium intake, such as uncontrolled pain, withdrawal symptoms, or recurrence of the condition for which the opium was prescribed. This is appropriate for the initial visit where the underdosing is identified and managed.

• Always assign an additional code for the specific manifestation or condition resulting from the underdosing (e.g., uncontrolled chronic pain).
• Ensure documentation clearly supports that the patient took less than the prescribed or recommended dose, rather than a failure of the drug itself.
• The "A" seventh character indicates an initial encounter for the underdosing event, meaning the patient is receiving active treatment for the adverse effects.