Adverse effect of selective serotonin reuptake inhibtr, init

This code signifies an undesirable or harmful reaction experienced by a patient due to the therapeutic use of a selective serotonin reuptake inhibitor (SSRI). These reactions are not due to an overdose or poisoning, but rather an expected or unexpected side effect when the medication is taken as prescribed. The "initial encounter" indicates the patient is receiving active treatment for the adverse effect.

Apply this code when a patient presents with symptoms such as nausea, insomnia, sexual dysfunction, or increased anxiety that are directly attributed to their prescribed SSRI medication. This is appropriate for the first visit where the adverse effect is evaluated and managed.

• Always sequence this code after the code for the specific adverse effect (e.g., R11.0 for nausea).
• Ensure documentation clearly links the adverse reaction to the SSRI and specifies it's not an overdose.
• For subsequent visits related to the same adverse effect, use the appropriate subsequent or sequela encounter codes.