T66
Radiation sickness, unspecified
- Release
- FY 2027
- Effective
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files.
Excludes1
specified adverse effects of radiation, such as:
Excludes1
burns (T20-T31)
Excludes1
leukemia (C91-C95)
Excludes1
radiation gastroenteritis and colitis ( K52.0 )
Excludes1
radiation pneumonitis ( J70.0 )
Excludes1
radiation related disorders of the skin and subcutaneous tissue (L55-L59)
Excludes1
sunburn ( L55 .-)
7th Character
The appropriate 7th character is to be added to code T66
7th Character
A - initial encounter
7th Character
D - subsequent encounter
7th Character
S - sequela
More Specific Codes
3 codes under T66
Version History
How T66 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentRadiation sickness, unspecified
-
FY 2026 Effective
UnchangedRadiation sickness, unspecified
Related Codes
Codes whose official notes reference T66
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
MedCodeSearch is an independent reference service and is not affiliated with CMS, CDC, or the U.S. government.
Look up another code
Search ICD-10-CM, ICD-10-PCS and HCPCS Level II by code or description.