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
  • S65.992D

    Other specified injury of unspecified blood vessel at wrist and hand of left arm, subsequent encounter

  • S65.992S

    Other specified injury of unspecified blood vessel at wrist and hand of left arm, sequela

  • S65.999

    Other specified injury of unspecified blood vessel at wrist and hand of unspecified arm

  • S65.999A

    Other specified injury of unspecified blood vessel at wrist and hand of unspecified arm, initial encounter

  • S65.999D

    Other specified injury of unspecified blood vessel at wrist and hand of unspecified arm, subsequent encounter

  • S65.999S

    Other specified injury of unspecified blood vessel at wrist and hand of unspecified arm, sequela

  • S66

    Injury of muscle, fascia and tendon at wrist and hand level

  • S66.0

    Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level

  • S66.00

    Unspecified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level

  • S66.001

    Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level

  • S66.001A

    Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter

  • S66.001D

    Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter

  • S66.001S

    Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, sequela

  • S66.002

    Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level

  • S66.002A

    Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter

  • S66.002D

    Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter

  • S66.002S

    Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, sequela

  • S66.009

    Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level

  • S66.009A

    Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter

  • S66.009D

    Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter

  • S66.009S

    Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela

  • S66.01

    Strain of long flexor muscle, fascia and tendon of thumb at wrist and hand level

  • S66.011

    Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level

  • S66.011A

    Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter

  • S66.011D

    Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter

  • S66.011S

    Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, sequela

  • S66.012

    Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level

  • S66.012A

    Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter

  • S66.012D

    Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter

  • S66.012S

    Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, sequela

  • S66.019

    Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level

  • S66.019A

    Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter

  • S66.019D

    Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter

  • S66.019S

    Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela

  • S66.02

    Laceration of long flexor muscle, fascia and tendon of thumb at wrist and hand level

  • S66.021

    Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level

  • S66.021A

    Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter

  • S66.021D

    Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter

  • S66.021S

    Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, sequela

  • S66.022

    Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level

  • S66.022A

    Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter

  • S66.022D

    Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter

  • S66.022S

    Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, sequela

  • S66.029

    Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level

  • S66.029A

    Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter

  • S66.029D

    Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter

  • S66.029S

    Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela

  • S66.09

    Other specified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level

  • S66.091

    Other specified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level

  • S66.091A

    Other specified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter

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