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D89.835

Billable

Cytokine release syndrome, grade 5

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A fatal or immediately life-threatening immune reaction with massive cytokine release causing severe multi-organ failure and shock.

Coding Tips

  • •Grade 5 indicates death or imminent death; ensure documentation clearly supports this severity level
  • •Document all interventions attempted and the clinical course leading to this outcome

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