Poisoning by loop diuretics, undetermined, sequela

This code signifies a long-term health condition or complication resulting from an unconfirmed or unknown cause of poisoning by loop diuretics. It indicates that the initial acute poisoning event has resolved, but its lasting effects are still present and being treated. The "undetermined" nature means the intent (accidental, intentional self-harm, assault) of the poisoning could not be established.

Apply this code when a patient presents with a chronic or residual condition directly attributable to a past loop diuretic poisoning where the circumstances of the poisoning were never definitively determined. This is appropriate for follow-up encounters addressing the sequelae, such as persistent electrolyte imbalances, renal dysfunction, or hearing loss, after the acute poisoning episode has passed.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past loop diuretic poisoning and states the undetermined intent.
• Do not use this code for acute poisoning events; instead, use the appropriate acute poisoning code with the 7th character "A" or "D."