Adverse effect of methylphenidate, sequela

This code indicates a lasting or residual condition resulting from a previous adverse reaction to methylphenidate. This adverse effect is no longer acute but has left a permanent or long-term consequence for the patient. Examples include persistent neurological deficits or organ damage attributed to a past adverse drug event.

Use this code when documenting a chronic or permanent health problem that is a direct result of an adverse effect from methylphenidate, and the acute phase of the adverse effect has resolved. This applies to situations where the patient is being treated for the sequela itself, rather than the acute adverse reaction.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., a specific neurological disorder).
• Ensure documentation clearly links the current condition to a past adverse effect of methylphenidate.
• Do not use this code for acute adverse effects; use the appropriate acute adverse effect code (e.g., T43.635A) for those situations.