Complication of immune effector cellular therapy, sequela

This code identifies a long-term or residual effect stemming from a complication of immune effector cellular therapy (IECT). It signifies that a patient is experiencing an ongoing health issue directly attributable to an adverse event that occurred during or after their IECT treatment. This is not for the acute complication itself, but for its lasting consequences.

Apply this code when documenting a chronic condition, permanent impairment, or persistent symptom that is a direct sequela of a previously experienced complication from IECT. Examples include chronic neurological deficits following ICANS, persistent cytopenias, or long-term organ damage that developed as a result of an IECT-related adverse event. This code is appropriate when the acute complication has resolved, but its effects remain.

• Always sequence this sequela code after the code for the specific manifestation or condition being treated.
• Ensure documentation clearly links the current condition to a prior IECT complication.
• Do not use this code for acute or active complications; use the appropriate acute complication code instead.