Undrdose of selective serotonin reuptake inhibitors, sequela

This code indicates a long-term consequence or complication arising from insufficient intake of selective serotonin reuptake inhibitors (SSRIs). This could manifest as a recurrence or worsening of the underlying psychiatric condition, or other persistent adverse effects due to the prolonged under-treatment.

Apply this code when documenting a patient presenting with a current condition that is a direct result of a past, inadequate dosage of an SSRI. This is appropriate for chronic issues or residual problems stemming from the underdosing event, not for acute underdosing.

• Requires a seventh character "S" for sequela, indicating a complication or condition arising from the initial underdosing event.
• Always code the specific sequela (e.g., recurrent major depressive disorder) first, followed by this code.
• Do not use for current, active underdosing; use the acute underdosing code for that scenario.