T66 is the ICD-10 code for Unspecified effects of radiation. It is a three-character category that is not subdivided further. It belongs to the block T66–T78 (Other and unspecified effects of external causes) in Chapter XIX, Injury, poisoning and certain other consequences of external causes.
- Code type
- Category (3 characters)
- Chapter
- XIX · S00–T98
- Classification
- WHO ICD-10, 2019 version
What T66 includes
Conditions and terms that are coded here.
- Radiation sickness
What T66 excludes
Conditions that look similar but belong under another code.
T66 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
T66Uspesifisert tilstand som skyldes stråling
DT66Skade forårsaget af stråling
- DT669Stråleskade UNS
T66Määrittämättömät säteilyn vaikutukset
T66Nicht näher bezeichnete Schäden durch Strahlung
T66Effets de rayonnements, sans précision
T66niet-gespecificeerde gevolgen van straling
Listed through more specific codes:
- T66.XXXARadiation sickness, unspecified, initial encounter
- T66.XXXDRadiation sickness, unspecified, subsequent encounter
- T66.XXXSRadiation sickness, unspecified, sequela
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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