ICD-10-CM Codes 2026 (USA)

• T66.XXXA	Radiation sickness, unspecified, initial encounter

• T66.XXXA	Radiation sickness, unspecified, initial encounter
  T66.XXXD	Radiation sickness, unspecified, subsequent encounter
  T66.XXXS	Radiation sickness, unspecified, sequela

Created by Peter Blahut, MD