Underdosing of oth antipsychotics and neuroleptics, subs

This code signifies that a patient is experiencing adverse effects or complications due to taking less than the prescribed amount of an antipsychotic or neuroleptic medication. This underdosing is not accidental and is impacting the patient's treatment or condition. The "subsequent encounter" indicates that this is not the initial visit for this specific underdosing issue.

Use this code when a patient presents for follow-up care related to insufficient intake of their antipsychotic or neuroleptic medication, leading to worsening symptoms or treatment failure. This includes situations where a patient intentionally or unintentionally takes less medication than prescribed, and the clinician is managing the resulting clinical issues.

• Always assign an additional code for the specific mental health condition being treated by the underdosed medication.
• Ensure documentation clearly supports the underdosing as the cause of the patient's current clinical presentation.
• Distinguish from poisoning (T43.5X1-T43.5X4) or adverse effects (T43.5X5-) which involve correct dosage or overdose.