Poisoning by immunoglobulin, accidental, subs

This code signifies a poisoning event resulting from the accidental or unintentional administration of immunoglobulin. This typically involves an adverse reaction or overdose to an immunoglobulin product, such as IVIG or SCIG, that was not intended to cause harm. The "subsequent encounter" indicates that the patient is receiving follow-up care for the initial poisoning.

Use this code when a patient presents for ongoing management or monitoring of an accidental immunoglobulin poisoning. This could include follow-up appointments after initial stabilization, management of lingering side effects, or assessment of organ damage caused by the overdose. It is appropriate after the acute phase of the poisoning has been addressed.

• Always sequence this code after the primary diagnosis for the specific manifestation of the poisoning (e.g., renal failure, anaphylactic shock).
• Ensure documentation clearly states the poisoning was accidental and that this is a subsequent encounter for care.
• Distinguish from adverse effects of correctly administered drugs, which would use different codes.