All ICD10 Codes
Chapter 19

S00–T88: Injury, Poisoning and Certain Other Consequences of External Causes

Injury, Poisoning and Certain Other Consequences of External Causes diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)
All CodesBillable Only
Internal Codes
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  • T23.41—

    Corrosion of unspecified degree of thumb (nail)

  • T23.411—

    Corrosion of unspecified degree of right thumb (nail)

  • T23.411A—

    Corrosion of unspecified degree of right thumb (nail), initial encounter

  • T23.411D—

    Corrosion of unspecified degree of right thumb (nail), subsequent encounter

  • T23.411S—

    Corrosion of unspecified degree of right thumb (nail), sequela

  • T23.412—

    Corrosion of unspecified degree of left thumb (nail)

  • T23.412A—

    Corrosion of unspecified degree of left thumb (nail), initial encounter

  • T23.412D—

    Corrosion of unspecified degree of left thumb (nail), subsequent encounter

  • T23.412S—

    Corrosion of unspecified degree of left thumb (nail), sequela

  • T23.419—

    Corrosion of unspecified degree of unspecified thumb (nail)

  • T23.419A—

    Corrosion of unspecified degree of unspecified thumb (nail), initial encounter

  • T23.419D—

    Corrosion of unspecified degree of unspecified thumb (nail), subsequent encounter

  • T23.419S—

    Corrosion of unspecified degree of unspecified thumb (nail), sequela

  • T23.42—

    Corrosion of unspecified degree of single finger (nail) except thumb

  • T23.421—

    Corrosion of unspecified degree of single right finger (nail) except thumb

  • T23.421A—

    Corrosion of unspecified degree of single right finger (nail) except thumb, initial encounter

  • T23.421D—

    Corrosion of unspecified degree of single right finger (nail) except thumb, subsequent encounter

  • T23.421S—

    Corrosion of unspecified degree of single right finger (nail) except thumb, sequela

  • T23.422—

    Corrosion of unspecified degree of single left finger (nail) except thumb

  • T23.422A—

    Corrosion of unspecified degree of single left finger (nail) except thumb, initial encounter

  • T23.422D—

    Corrosion of unspecified degree of single left finger (nail) except thumb, subsequent encounter

  • T23.422S—

    Corrosion of unspecified degree of single left finger (nail) except thumb, sequela

  • T23.429—

    Corrosion of unspecified degree of unspecified single finger (nail) except thumb

  • T23.429A—

    Corrosion of unspecified degree of unspecified single finger (nail) except thumb, initial encounter

  • T23.429D—

    Corrosion of unspecified degree of unspecified single finger (nail) except thumb, subsequent encounter

  • T23.429S—

    Corrosion of unspecified degree of unspecified single finger (nail) except thumb, sequela

  • T23.43—

    Corrosion of unspecified degree of multiple fingers (nail), not including thumb

  • T23.431—

    Corrosion of unspecified degree of multiple right fingers (nail), not including thumb

  • T23.431A—

    Corrosion of unspecified degree of multiple right fingers (nail), not including thumb, initial encounter

  • T23.431D—

    Corrosion of unspecified degree of multiple right fingers (nail), not including thumb, subsequent encounter

  • T23.431S—

    Corrosion of unspecified degree of multiple right fingers (nail), not including thumb, sequela

  • T23.432—

    Corrosion of unspecified degree of multiple left fingers (nail), not including thumb

  • T23.432A—

    Corrosion of unspecified degree of multiple left fingers (nail), not including thumb, initial encounter

  • T23.432D—

    Corrosion of unspecified degree of multiple left fingers (nail), not including thumb, subsequent encounter

  • T23.432S—

    Corrosion of unspecified degree of multiple left fingers (nail), not including thumb, sequela

  • T23.439—

    Corrosion of unspecified degree of unspecified multiple fingers (nail), not including thumb

  • T23.439A—

    Corrosion of unspecified degree of unspecified multiple fingers (nail), not including thumb, initial encounter

  • T23.439D—

    Corrosion of unspecified degree of unspecified multiple fingers (nail), not including thumb, subsequent encounter

  • T23.439S—

    Corrosion of unspecified degree of unspecified multiple fingers (nail), not including thumb, sequela

  • T23.44—

    Corrosion of unspecified degree of multiple fingers (nail), including thumb

  • T23.441—

    Corrosion of unspecified degree of multiple right fingers (nail), including thumb

  • T23.441A—

    Corrosion of unspecified degree of multiple right fingers (nail), including thumb, initial encounter

  • T23.441D—

    Corrosion of unspecified degree of multiple right fingers (nail), including thumb, subsequent encounter

  • T23.441S—

    Corrosion of unspecified degree of multiple right fingers (nail), including thumb, sequela

  • T23.442—

    Corrosion of unspecified degree of multiple left fingers (nail), including thumb

  • T23.442A—

    Corrosion of unspecified degree of multiple left fingers (nail), including thumb, initial encounter

  • T23.442D—

    Corrosion of unspecified degree of multiple left fingers (nail), including thumb, subsequent encounter

  • T23.442S—

    Corrosion of unspecified degree of multiple left fingers (nail), including thumb, sequela

  • T23.449—

    Corrosion of unspecified degree of unspecified multiple fingers (nail), including thumb

  • T23.449A—

    Corrosion of unspecified degree of unspecified multiple fingers (nail), including thumb, initial encounter

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