Advrs effect of slctv seroton/norepineph reup inhibtr, init

This code signifies a patient experiencing an unintended and undesirable reaction to a selective serotonin and norepinephrine reuptake inhibitor (SSNRI) medication, occurring during the period when the adverse effect is actively being treated. These reactions are typically side effects that manifest despite correct dosage and administration of the drug.

Apply this code when documenting the initial presentation and active management of an adverse effect caused by an SSNRI, such as venlafaxine or duloxetine. This includes situations where the patient is admitted for treatment of the adverse effect or is seen in an outpatient setting for the first time regarding this specific reaction.

• Always sequence this code after the code for the specific manifestation of the adverse effect.
• Ensure documentation clearly links the adverse effect to the SSNRI and specifies it as an initial encounter.
• Distinguish adverse effects from poisoning or underdosing, which have different code categories.