Adverse effect of tetracyclic antidepressants, sequela

This code signifies a long-term or residual condition resulting from an adverse reaction to a tetracyclic antidepressant medication. These are effects that persist after the acute phase of the adverse event has resolved, or that manifest much later. Examples include chronic neurological deficits, persistent organ damage, or lasting psychological sequelae.

Use this code when documenting a patient's current condition that is a direct, lasting consequence of a past adverse effect from a tetracyclic antidepressant. This applies to situations where the original adverse effect has resolved, but a permanent or chronic complication remains. For instance, if a patient developed liver damage from a tetracyclic antidepressant years ago, and now presents with chronic liver disease attributed to that past event.

• Always sequence this code after the code(s) for the specific sequela being treated or documented.
• Ensure documentation clearly links the current condition as a sequela of the past adverse drug effect.
• Do not use for acute adverse effects; refer to the appropriate acute adverse effect code for initial encounters.