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
  • T20.35XS

    Burn of third degree of scalp [any part], sequela

  • T20.36

    Burn of third degree of forehead and cheek

  • T20.36XA

    Burn of third degree of forehead and cheek, initial encounter

  • T20.36XD

    Burn of third degree of forehead and cheek, subsequent encounter

  • T20.36XS

    Burn of third degree of forehead and cheek, sequela

  • T20.37

    Burn of third degree of neck

  • T20.37XA

    Burn of third degree of neck, initial encounter

  • T20.37XD

    Burn of third degree of neck, subsequent encounter

  • T20.37XS

    Burn of third degree of neck, sequela

  • T20.39

    Burn of third degree of multiple sites of head, face, and neck

  • T20.39XA

    Burn of third degree of multiple sites of head, face, and neck, initial encounter

  • T20.39XD

    Burn of third degree of multiple sites of head, face, and neck, subsequent encounter

  • T20.39XS

    Burn of third degree of multiple sites of head, face, and neck, sequela

  • T20.4

    Corrosion of unspecified degree of head, face, and neck

  • T20.40

    Corrosion of unspecified degree of head, face, and neck, unspecified site

  • T20.40XA

    Corrosion of unspecified degree of head, face, and neck, unspecified site, initial encounter

  • T20.40XD

    Corrosion of unspecified degree of head, face, and neck, unspecified site, subsequent encounter

  • T20.40XS

    Corrosion of unspecified degree of head, face, and neck, unspecified site, sequela

  • T20.41

    Corrosion of unspecified degree of ear [any part, except ear drum]

  • T20.411

    Corrosion of unspecified degree of right ear [any part, except ear drum]

  • T20.411A

    Corrosion of unspecified degree of right ear [any part, except ear drum], initial encounter

  • T20.411D

    Corrosion of unspecified degree of right ear [any part, except ear drum], subsequent encounter

  • T20.411S

    Corrosion of unspecified degree of right ear [any part, except ear drum], sequela

  • T20.412

    Corrosion of unspecified degree of left ear [any part, except ear drum]

  • T20.412A

    Corrosion of unspecified degree of left ear [any part, except ear drum], initial encounter

  • T20.412D

    Corrosion of unspecified degree of left ear [any part, except ear drum], subsequent encounter

  • T20.412S

    Corrosion of unspecified degree of left ear [any part, except ear drum], sequela

  • T20.419

    Corrosion of unspecified degree of unspecified ear [any part, except ear drum]

  • T20.419A

    Corrosion of unspecified degree of unspecified ear [any part, except ear drum], initial encounter

  • T20.419D

    Corrosion of unspecified degree of unspecified ear [any part, except ear drum], subsequent encounter

  • T20.419S

    Corrosion of unspecified degree of unspecified ear [any part, except ear drum], sequela

  • T20.42

    Corrosion of unspecified degree of lip(s)

  • T20.42XA

    Corrosion of unspecified degree of lip(s), initial encounter

  • T20.42XD

    Corrosion of unspecified degree of lip(s), subsequent encounter

  • T20.42XS

    Corrosion of unspecified degree of lip(s), sequela

  • T20.43

    Corrosion of unspecified degree of chin

  • T20.43XA

    Corrosion of unspecified degree of chin, initial encounter

  • T20.43XD

    Corrosion of unspecified degree of chin, subsequent encounter

  • T20.43XS

    Corrosion of unspecified degree of chin, sequela

  • T20.44

    Corrosion of unspecified degree of nose (septum)

  • T20.44XA

    Corrosion of unspecified degree of nose (septum), initial encounter

  • T20.44XD

    Corrosion of unspecified degree of nose (septum), subsequent encounter

  • T20.44XS

    Corrosion of unspecified degree of nose (septum), sequela

  • T20.45

    Corrosion of unspecified degree of scalp [any part]

  • T20.45XA

    Corrosion of unspecified degree of scalp [any part], initial encounter

  • T20.45XD

    Corrosion of unspecified degree of scalp [any part], subsequent encounter

  • T20.45XS

    Corrosion of unspecified degree of scalp [any part], sequela

  • T20.46

    Corrosion of unspecified degree of forehead and cheek

  • T20.46XA

    Corrosion of unspecified degree of forehead and cheek, initial encounter

  • T20.46XD

    Corrosion of unspecified degree of forehead and cheek, subsequent encounter

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