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.-)
Internal Codes
  • S20.91XS

    Abrasion of unspecified parts of thorax, sequela

  • S20.92

    Blister (nonthermal) of unspecified parts of thorax

  • S20.92XA

    Blister (nonthermal) of unspecified parts of thorax, initial encounter

  • S20.92XD

    Blister (nonthermal) of unspecified parts of thorax, subsequent encounter

  • S20.92XS

    Blister (nonthermal) of unspecified parts of thorax, sequela

  • S20.94

    External constriction of unspecified parts of thorax

  • S20.94XA

    External constriction of unspecified parts of thorax, initial encounter

  • S20.94XD

    External constriction of unspecified parts of thorax, subsequent encounter

  • S20.94XS

    External constriction of unspecified parts of thorax, sequela

  • S20.95

    Superficial foreign body of unspecified parts of thorax

  • S20.95XA

    Superficial foreign body of unspecified parts of thorax, initial encounter

  • S20.95XD

    Superficial foreign body of unspecified parts of thorax, subsequent encounter

  • S20.95XS

    Superficial foreign body of unspecified parts of thorax, sequela

  • S20.96

    Insect bite (nonvenomous) of unspecified parts of thorax

  • S20.96XA

    Insect bite (nonvenomous) of unspecified parts of thorax, initial encounter

  • S20.96XD

    Insect bite (nonvenomous) of unspecified parts of thorax, subsequent encounter

  • S20.96XS

    Insect bite (nonvenomous) of unspecified parts of thorax, sequela

  • S20.97

    Other superficial bite of unspecified parts of thorax

  • S20.97XA

    Other superficial bite of unspecified parts of thorax, initial encounter

  • S20.97XD

    Other superficial bite of unspecified parts of thorax, subsequent encounter

  • S20.97XS

    Other superficial bite of unspecified parts of thorax, sequela

  • S21

    Open wound of thorax

  • S21.0

    Open wound of breast

  • S21.00

    Unspecified open wound of breast

  • S21.001

    Unspecified open wound of right breast

  • S21.001A

    Unspecified open wound of right breast, initial encounter

  • S21.001D

    Unspecified open wound of right breast, subsequent encounter

  • S21.001S

    Unspecified open wound of right breast, sequela

  • S21.002

    Unspecified open wound of left breast

  • S21.002A

    Unspecified open wound of left breast, initial encounter

  • S21.002D

    Unspecified open wound of left breast, subsequent encounter

  • S21.002S

    Unspecified open wound of left breast, sequela

  • S21.009

    Unspecified open wound of unspecified breast

  • S21.009A

    Unspecified open wound of unspecified breast, initial encounter

  • S21.009D

    Unspecified open wound of unspecified breast, subsequent encounter

  • S21.009S

    Unspecified open wound of unspecified breast, sequela

  • S21.01

    Laceration without foreign body of breast

  • S21.011

    Laceration without foreign body of right breast

  • S21.011A

    Laceration without foreign body of right breast, initial encounter

  • S21.011D

    Laceration without foreign body of right breast, subsequent encounter

  • S21.011S

    Laceration without foreign body of right breast, sequela

  • S21.012

    Laceration without foreign body of left breast

  • S21.012A

    Laceration without foreign body of left breast, initial encounter

  • S21.012D

    Laceration without foreign body of left breast, subsequent encounter

  • S21.012S

    Laceration without foreign body of left breast, sequela

  • S21.019

    Laceration without foreign body of unspecified breast

  • S21.019A

    Laceration without foreign body of unspecified breast, initial encounter

  • S21.019D

    Laceration without foreign body of unspecified breast, subsequent encounter

  • S21.019S

    Laceration without foreign body of unspecified breast, sequela

  • S21.02

    Laceration with foreign body of breast

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