ABO incompatibility w hemolytic transfs react, unsp, sequela

This code signifies a long-term or late effect resulting from a hemolytic transfusion reaction caused by an incompatibility in the ABO blood group system. It indicates that the specific type of ABO incompatibility or the precise nature of the sequela is not documented.

Apply this code when a patient presents with a persistent or delayed complication directly attributable to a past ABO incompatible hemolytic transfusion reaction, and the initial acute event has resolved. This is appropriate for follow-up encounters addressing the chronic effects rather than the acute reaction itself.

• Only use this code for sequelae; do not use for the acute hemolytic transfusion reaction.
• Ensure documentation clearly links the current condition to a previous ABO incompatibility transfusion reaction.
• Avoid using this code if a more specific sequela (e.g., renal failure due to hemolytic reaction) can be coded.