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
  • S80.929A

    Unspecified superficial injury of unspecified lower leg, initial encounter

  • S80.929D

    Unspecified superficial injury of unspecified lower leg, subsequent encounter

  • S80.929S

    Unspecified superficial injury of unspecified lower leg, sequela

  • S81

    Open wound of knee and lower leg

  • S81.0

    Open wound of knee

  • S81.00

    Unspecified open wound of knee

  • S81.001

    Unspecified open wound, right knee

  • S81.001A

    Unspecified open wound, right knee, initial encounter

  • S81.001D

    Unspecified open wound, right knee, subsequent encounter

  • S81.001S

    Unspecified open wound, right knee, sequela

  • S81.002

    Unspecified open wound, left knee

  • S81.002A

    Unspecified open wound, left knee, initial encounter

  • S81.002D

    Unspecified open wound, left knee, subsequent encounter

  • S81.002S

    Unspecified open wound, left knee, sequela

  • S81.009

    Unspecified open wound, unspecified knee

  • S81.009A

    Unspecified open wound, unspecified knee, initial encounter

  • S81.009D

    Unspecified open wound, unspecified knee, subsequent encounter

  • S81.009S

    Unspecified open wound, unspecified knee, sequela

  • S81.01

    Laceration without foreign body of knee

  • S81.011

    Laceration without foreign body, right knee

  • S81.011A

    Laceration without foreign body, right knee, initial encounter

  • S81.011D

    Laceration without foreign body, right knee, subsequent encounter

  • S81.011S

    Laceration without foreign body, right knee, sequela

  • S81.012

    Laceration without foreign body, left knee

  • S81.012A

    Laceration without foreign body, left knee, initial encounter

  • S81.012D

    Laceration without foreign body, left knee, subsequent encounter

  • S81.012S

    Laceration without foreign body, left knee, sequela

  • S81.019

    Laceration without foreign body, unspecified knee

  • S81.019A

    Laceration without foreign body, unspecified knee, initial encounter

  • S81.019D

    Laceration without foreign body, unspecified knee, subsequent encounter

  • S81.019S

    Laceration without foreign body, unspecified knee, sequela

  • S81.02

    Laceration with foreign body of knee

  • S81.021

    Laceration with foreign body, right knee

  • S81.021A

    Laceration with foreign body, right knee, initial encounter

  • S81.021D

    Laceration with foreign body, right knee, subsequent encounter

  • S81.021S

    Laceration with foreign body, right knee, sequela

  • S81.022

    Laceration with foreign body, left knee

  • S81.022A

    Laceration with foreign body, left knee, initial encounter

  • S81.022D

    Laceration with foreign body, left knee, subsequent encounter

  • S81.022S

    Laceration with foreign body, left knee, sequela

  • S81.029

    Laceration with foreign body, unspecified knee

  • S81.029A

    Laceration with foreign body, unspecified knee, initial encounter

  • S81.029D

    Laceration with foreign body, unspecified knee, subsequent encounter

  • S81.029S

    Laceration with foreign body, unspecified knee, sequela

  • S81.03

    Puncture wound without foreign body of knee

  • S81.031

    Puncture wound without foreign body, right knee

  • S81.031A

    Puncture wound without foreign body, right knee, initial encounter

  • S81.031D

    Puncture wound without foreign body, right knee, subsequent encounter

  • S81.031S

    Puncture wound without foreign body, right knee, sequela

  • S81.032

    Puncture wound without foreign body, left knee

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