Adverse effect of immunoglobulin, sequela

This code signifies a long-term or permanent health problem resulting from a past adverse reaction to immunoglobulin therapy. It indicates that the initial acute adverse effect has resolved, but a residual condition or complication persists.

Apply this code when documenting a chronic condition directly attributable to an adverse event from immunoglobulin administration, such as persistent renal dysfunction following an acute kidney injury from IVIG, or chronic neurological deficits after a severe anaphylactic reaction. This code is appropriate when the patient is no longer experiencing the acute adverse effect but is being treated for its lasting consequences.

• Always sequence this code after the code for the specific sequela (e.g., chronic kidney disease, neuropathy).
• Do not use this code for acute adverse effects; use the appropriate acute adverse effect code from the T36-T50 range.
• Ensure documentation clearly links the current chronic condition to a past immunoglobulin adverse event.