Delayed hemolytic transfs react, unsp incompat, sequela

This code signifies the long-term effects or complications arising from a delayed hemolytic transfusion reaction, where the specific cause of the incompatibility is not documented. It indicates that the patient is experiencing residual issues stemming from a prior immune response to transfused blood components, which manifested more than 24 hours post-transfusion.

Use this code when a patient presents with ongoing symptoms or conditions directly attributable to a past delayed hemolytic transfusion reaction, and the medical record does not specify the type of incompatibility that caused the reaction. This typically applies to follow-up encounters for managing chronic sequelae such as persistent anemia, renal dysfunction, or other organ damage linked to the original transfusion event.

• Assign this code only for the sequela of the reaction, not for the acute event itself.
• Ensure documentation clearly links the current condition to a past delayed hemolytic transfusion reaction.
• Do not use if the specific incompatibility (e.g., ABO, Rh) is known and documented; a more specific code would then be appropriate.