Underdosing of immunoglobulin, sequela

This code indicates a long-term or residual effect resulting from the patient receiving an insufficient dose of immunoglobulin. This underdosing could have occurred in the past, leading to ongoing health issues that are now being addressed. The sequela implies that the direct acute effects of the underdosing have resolved, but a lasting consequence remains.

Use this code when documenting a patient presenting with a chronic condition or persistent symptom directly attributable to a historical underdosing of immunoglobulin. This is appropriate when the current encounter focuses on managing these long-term complications, rather than the acute event of underdosing itself. Examples include chronic infections or autoimmune manifestations linked to past inadequate immunoglobulin therapy.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past immunoglobulin underdosing.
• Do not use for acute underdosing events; reserve for residual effects.