Underdosing of antirheumatics, NEC, sequela

This code indicates a long-term consequence or complication arising from the patient receiving an insufficient dose of an antirheumatic medication that is not specified elsewhere. This underdosing has led to a persistent health problem or condition.

Apply this code when a patient presents with a current condition (the sequela) that is directly attributable to a past instance of inadequate antirheumatic medication dosage. Examples include chronic joint damage or persistent inflammatory symptoms resulting from prolonged undertreatment.

• Always sequence this code second, after the code for the specific sequela (the condition caused by the underdosing).
• Ensure documentation clearly links the current sequela to a historical underdosing event of an unspecified antirheumatic.
• Distinguish from acute underdosing (initial encounter) or subsequent encounters for active underdosing, as this code is specifically for the sequela.