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
  • T20.24XS

    Burn of second degree of nose (septum), sequela

  • T20.25

    Burn of second degree of scalp [any part]

  • T20.25XA

    Burn of second degree of scalp [any part], initial encounter

  • T20.25XD

    Burn of second degree of scalp [any part], subsequent encounter

  • T20.25XS

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

  • T20.26

    Burn of second degree of forehead and cheek

  • T20.26XA

    Burn of second degree of forehead and cheek, initial encounter

  • T20.26XD

    Burn of second degree of forehead and cheek, subsequent encounter

  • T20.26XS

    Burn of second degree of forehead and cheek, sequela

  • T20.27

    Burn of second degree of neck

  • T20.27XA

    Burn of second degree of neck, initial encounter

  • T20.27XD

    Burn of second degree of neck, subsequent encounter

  • T20.27XS

    Burn of second degree of neck, sequela

  • T20.29

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

  • T20.29XA

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

  • T20.29XD

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

  • T20.29XS

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

  • T20.3

    Burn of third degree of head, face, and neck

  • T20.30

    Burn of third degree of head, face, and neck, unspecified site

  • T20.30XA

    Burn of third degree of head, face, and neck, unspecified site, initial encounter

  • T20.30XD

    Burn of third degree of head, face, and neck, unspecified site, subsequent encounter

  • T20.30XS

    Burn of third degree of head, face, and neck, unspecified site, sequela

  • T20.31

    Burn of third degree of ear [any part, except ear drum]

  • T20.311

    Burn of third degree of right ear [any part, except ear drum]

  • T20.311A

    Burn of third degree of right ear [any part, except ear drum], initial encounter

  • T20.311D

    Burn of third degree of right ear [any part, except ear drum], subsequent encounter

  • T20.311S

    Burn of third degree of right ear [any part, except ear drum], sequela

  • T20.312

    Burn of third degree of left ear [any part, except ear drum]

  • T20.312A

    Burn of third degree of left ear [any part, except ear drum], initial encounter

  • T20.312D

    Burn of third degree of left ear [any part, except ear drum], subsequent encounter

  • T20.312S

    Burn of third degree of left ear [any part, except ear drum], sequela

  • T20.319

    Burn of third degree of unspecified ear [any part, except ear drum]

  • T20.319A

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

  • T20.319D

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

  • T20.319S

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

  • T20.32

    Burn of third degree of lip(s)

  • T20.32XA

    Burn of third degree of lip(s), initial encounter

  • T20.32XD

    Burn of third degree of lip(s), subsequent encounter

  • T20.32XS

    Burn of third degree of lip(s), sequela

  • T20.33

    Burn of third degree of chin

  • T20.33XA

    Burn of third degree of chin, initial encounter

  • T20.33XD

    Burn of third degree of chin, subsequent encounter

  • T20.33XS

    Burn of third degree of chin, sequela

  • T20.34

    Burn of third degree of nose (septum)

  • T20.34XA

    Burn of third degree of nose (septum), initial encounter

  • T20.34XD

    Burn of third degree of nose (septum), subsequent encounter

  • T20.34XS

    Burn of third degree of nose (septum), sequela

  • T20.35

    Burn of third degree of scalp [any part]

  • T20.35XA

    Burn of third degree of scalp [any part], initial encounter

  • T20.35XD

    Burn of third degree of scalp [any part], subsequent encounter

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