ICD-10-CM Diagnosis code T66

Radiation sickness, unspecified

Coding Guidelines for T66

T66 is a valid ICD-10-CM diagnosis code meaning 'Radiation sickness, unspecified'.

Purely Excluded Conditions

These diag codes should never be used at the same time as T66 because these conditions cannot occur together:

  • specified adverse effects of radiation, such as:
  • burns (T20-T31)
  • leukemia (C91-C95)
  • radiation gastroenteritis and colitis (K52.0)
  • radiation pneumonitis (J70.0)
  • radiation related disorders of the skin and subcutaneous tissue (L55-L59)
  • sunburn (L55.-)

Complications & Comorbid Conditions (CC/MCC) Rules for T66

T66 is not a CC or MCC.

DRG Mapping Rules for T66

T66 doesn't map to any MS-DRGs.

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