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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  • S20.4—

    Other and unspecified superficial injuries of back wall of thorax

  • S20.40—

    Unspecified superficial injuries of back wall of thorax

  • S20.401—

    Unspecified superficial injuries of right back wall of thorax

  • S20.401A—

    Unspecified superficial injuries of right back wall of thorax, initial encounter

  • S20.401D—

    Unspecified superficial injuries of right back wall of thorax, subsequent encounter

  • S20.401S—

    Unspecified superficial injuries of right back wall of thorax, sequela

  • S20.402—

    Unspecified superficial injuries of left back wall of thorax

  • S20.402A—

    Unspecified superficial injuries of left back wall of thorax, initial encounter

  • S20.402D—

    Unspecified superficial injuries of left back wall of thorax, subsequent encounter

  • S20.402S—

    Unspecified superficial injuries of left back wall of thorax, sequela

  • S20.409—

    Unspecified superficial injuries of unspecified back wall of thorax

  • S20.409A—

    Unspecified superficial injuries of unspecified back wall of thorax, initial encounter

  • S20.409D—

    Unspecified superficial injuries of unspecified back wall of thorax, subsequent encounter

  • S20.409S—

    Unspecified superficial injuries of unspecified back wall of thorax, sequela

  • S20.41—

    Abrasion of back wall of thorax

  • S20.411—

    Abrasion of right back wall of thorax

  • S20.411A—

    Abrasion of right back wall of thorax, initial encounter

  • S20.411D—

    Abrasion of right back wall of thorax, subsequent encounter

  • S20.411S—

    Abrasion of right back wall of thorax, sequela

  • S20.412—

    Abrasion of left back wall of thorax

  • S20.412A—

    Abrasion of left back wall of thorax, initial encounter

  • S20.412D—

    Abrasion of left back wall of thorax, subsequent encounter

  • S20.412S—

    Abrasion of left back wall of thorax, sequela

  • S20.419—

    Abrasion of unspecified back wall of thorax

  • S20.419A—

    Abrasion of unspecified back wall of thorax, initial encounter

  • S20.419D—

    Abrasion of unspecified back wall of thorax, subsequent encounter

  • S20.419S—

    Abrasion of unspecified back wall of thorax, sequela

  • S20.42—

    Blister (nonthermal) of back wall of thorax

  • S20.421—

    Blister (nonthermal) of right back wall of thorax

  • S20.421A—

    Blister (nonthermal) of right back wall of thorax, initial encounter

  • S20.421D—

    Blister (nonthermal) of right back wall of thorax, subsequent encounter

  • S20.421S—

    Blister (nonthermal) of right back wall of thorax, sequela

  • S20.422—

    Blister (nonthermal) of left back wall of thorax

  • S20.422A—

    Blister (nonthermal) of left back wall of thorax, initial encounter

  • S20.422D—

    Blister (nonthermal) of left back wall of thorax, subsequent encounter

  • S20.422S—

    Blister (nonthermal) of left back wall of thorax, sequela

  • S20.429—

    Blister (nonthermal) of unspecified back wall of thorax

  • S20.429A—

    Blister (nonthermal) of unspecified back wall of thorax, initial encounter

  • S20.429D—

    Blister (nonthermal) of unspecified back wall of thorax, subsequent encounter

  • S20.429S—

    Blister (nonthermal) of unspecified back wall of thorax, sequela

  • S20.44—

    External constriction of back wall of thorax

  • S20.441—

    External constriction of right back wall of thorax

  • S20.441A—

    External constriction of right back wall of thorax, initial encounter

  • S20.441D—

    External constriction of right back wall of thorax, subsequent encounter

  • S20.441S—

    External constriction of right back wall of thorax, sequela

  • S20.442—

    External constriction of left back wall of thorax

  • S20.442A—

    External constriction of left back wall of thorax, initial encounter

  • S20.442D—

    External constriction of left back wall of thorax, subsequent encounter

  • S20.442S—

    External constriction of left back wall of thorax, sequela

  • S20.449—

    External constriction of unspecified back wall of thorax

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