Poisoning by penicillins, accidental, sequela

This code signifies a long-term or residual effect resulting from an accidental overdose or adverse reaction to penicillin. The initial poisoning event has resolved, but the patient continues to experience a health problem directly attributable to that past exposure. This could include chronic organ damage, persistent neurological deficits, or ongoing allergic manifestations.

Apply this code when documenting a patient's current condition that is a direct and lasting consequence of a previously resolved unintentional penicillin poisoning. Examples include chronic kidney disease developed after an acute tubular necrosis from penicillin overdose, or persistent nerve damage following a severe anaphylactic reaction. This code is used after the acute phase of the poisoning has passed.

• Always sequence this code after the code for the specific sequela being treated (e.g., chronic kidney disease).
• Ensure documentation clearly links the current condition to the past accidental penicillin poisoning.
• Do not use this code for acute poisoning events; use the appropriate acute poisoning code for the initial encounter.