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ICD-10-CM 2027 · T66-T78

Other and unspecified effects of external causes

Part of chapter 19, injury, poisoning and certain other consequences of external causes.

About T66-T78

Block T66-T78 contains 11 categories and 456 billable codes for FY2027. No codes here changed in the FY2027 update. 0 codes are MCCs and 89 are CCs when reported as secondary diagnoses.

T66Radiation sickness, unspecified

T67Effects of heat and light

T68Hypothermia

T69Other effects of reduced temperature

T70Effects of air pressure and water pressure

T71Asphyxiation

T73Effects of other deprivation

T74Adult and child abuse, neglect and other maltreatment, confirmed

T75Other and unspecified effects of other external causes

T76Adult and child abuse, neglect and other maltreatment, suspected

T78Adverse effects, not elsewhere classified

Block notes

Code also
  • , if applicable, place of occurrence, such as:
  • highway rest stop (Y92.523)
  • school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
  • service areas as the place of occurrence of the external cause (Y92.52-)
  • single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
  • transport vehicle as the place of occurrence of the external cause (Y92.81-)