T66.XXXA
Radiation sickness, unspecified, initial encounter
- Release
- FY 2027
- Effective
Hierarchy
Where T66.XXXA sits in the official hierarchy. Each level is the code it is classified under.
- T66 Parent Radiation sickness, unspecified
- T66.XXXA This code Radiation sickness, unspecified, initial encounter
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Excludes1
specified adverse effects of radiation, such as:
Inherited from T66 — Radiation sickness, unspecified
Excludes1
radiation gastroenteritis and colitis ( K52.0 )
Inherited from T66 — Radiation sickness, unspecified
Excludes1
radiation related disorders of the skin and subcutaneous tissue (L55-L59)
Inherited from T66 — Radiation sickness, unspecified
7th Character
The appropriate 7th character is to be added to code T66
Inherited from T66 — Radiation sickness, unspecified
Version History
How T66.XXXA appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentRadiation sickness, unspecified, initial encounter
-
FY 2026 Effective
UnchangedRadiation sickness, unspecified, initial encounter
Related Codes
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)
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