T66 Radiation sickness, unspecified
Non-billable ICD-10-CM code.
Excludes1 (never code 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.-)
7th character note
- The appropriate 7th character is to be added to code T66
7th character required
- A — initial encounter
- D — subsequent encounter
- S — sequela
Applies from T66 Radiation sickness, unspecified
Excludes1 (never code 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.-)
7th character note
- The appropriate 7th character is to be added to code T66
7th character required
- A — initial encounter
- D — subsequent encounter
- S — sequela
Code annotations containing back-references to T66
Back-references to T66
- Type 2 Excludes:
Z77.123 Contact with and (suspected) exposure to radon and other naturally occurring radiation ("radiation sickness NOS (T66)")
Back-references to T66
- Type 2 Excludes:
Z77.123 Contact with and (suspected) exposure to radon and other naturally occurring radiation ("radiation sickness NOS (T66)")
Diagnosis Index entries for T66
- Effect, adverse › infrared (radiation) (rays) NOS
- Effect, adverse › radiation (diagnostic) (infrared) (natural source) (therapeutic) (ultraviolet) (X-ray) NOS
- Effect, adverse › ultraviolet (radiation) (rays) NOS
- Irradiation effects, adverse
- Radiation › effects NOS
- Radiation › sickness NOS
- Sickness › radiation
Nearby codes
T66 Radiation sickness, unspecified (this code)T66.XXXA Radiation sickness, unspecified, initial encounterT66.XXXD Radiation sickness, unspecified, subsequent encounterT66.XXXS Radiation sickness, unspecified, sequela