Underdosing of selective serotonin reuptake inhibitors, subs

This code signifies that a patient is experiencing adverse effects or complications due to taking less than the prescribed amount of a selective serotonin reuptake inhibitor (SSRI). This underdosing could be intentional or unintentional, leading to a recurrence or worsening of the condition the SSRI was intended to treat.

Apply this code when a patient presents for follow-up care related to symptoms or issues arising from insufficient SSRI medication intake. This includes situations where a patient reports missing doses, intentionally reducing their dosage without medical advice, or experiencing a relapse of depression or anxiety due to underdosing.

• Always use in conjunction with a code for the specific adverse effect or condition being treated (e.g., recurrent major depressive disorder).
• The "D" seventh character indicates a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.
• Distinguish from poisoning (overdosing) or adverse effects from correct dosage.