Radiation sickness, unspecified T66

The ICD10 code for the diagnosis "Radiation sickness, unspecified" is "T66". T66 is NOT a 'valid' or 'billable' ICD10 code. Please select a more specific diagnosis below.

  • T66 should not be used for reimbursement purposes. Please select a more specific diagnosis below.
  • The 2019 edition of ICD-10-CM T66 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of T66 - other international versions of ICD-10 T66 may differ.
Type 1 Excludes:
  • 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.-)

Codes: = Billable

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.