T66: Radiation sickness, unspecified excludes1 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.-) sevenChrNote The appropriate 7th character is to be added to code T66 sevenChrDef A: initial encounter D: subsequent encounter S: sequela |