Underdosing of unspecified psychostimulants, subs encntr

This code indicates that a patient is experiencing adverse effects or complications due to not taking enough of an unspecified psychostimulant medication, and this is being addressed during a follow-up visit. It signifies that the prescribed dosage was insufficient or the medication was not taken as directed, leading to a recurrence or persistence of the underlying condition.

Apply this code when a patient presents for ongoing management of a condition where the initial underdosing of an unspecified psychostimulant has already been identified and is being monitored or treated. This would include scenarios where a patient's symptoms have not improved or have worsened due to inadequate medication intake, and they are returning for dose adjustments or further evaluation.

• Ensure documentation clearly states that the encounter is subsequent and relates to previously identified underdosing.
• Always code the specific adverse effect or condition being treated as the primary diagnosis, with this code as a secondary diagnosis.
• Avoid using this code for initial encounters where underdosing is first identified; use the "A" (initial encounter) seventh character instead.