Radiation sickness, unspecified, subsequent encounter
Billable / specificPOA exempt
T66.XXXD is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes (from T66)
- Note: Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- Note: The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Excludes1
Not coded here — never report together with this code.
- specified adverse effects of radiation, such as: (from T66)
- burns (T20-T31) (from T66)
- leukemia (C91-C95) (from T66)
- radiation gastroenteritis and colitis (K52.0) (from T66)
- radiation pneumonitis (J70.0) (from T66)
- radiation related disorders of the skin and subcutaneous tissue (L55-L59) (from T66)
- sunburn (L55.-) (from T66)
Excludes2
Not included here — may be reported together when both conditions exist.
Use additional code
Add a code to identify the following, if applicable.
Code also
An additional code may be needed.
- , if applicable, place of occurrence, such as: (from T66)
- highway rest stop (Y92.523) (from T66)
- school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-) (from T66)
- service areas as the place of occurrence of the external cause (Y92.52-) (from T66)
- single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-) (from T66)
- transport vehicle as the place of occurrence of the external cause (Y92.81-) (from T66)
7th character
The 7th character values that apply to this code (defined at T66). Use the placeholder "X" for missing positions.
| Character | Meaning |
|---|---|
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
Parent code
- T66Radiation sickness, unspecifiedNeeds 7th char