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
  • S56.311

    Strain of extensor or abductor muscles, fascia and tendons of right thumb at forearm level

  • S56.311A

    Strain of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, initial encounter

  • S56.311D

    Strain of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, subsequent encounter

  • S56.311S

    Strain of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, sequela

  • S56.312

    Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level

  • S56.312A

    Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, initial encounter

  • S56.312D

    Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, subsequent encounter

  • S56.312S

    Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, sequela

  • S56.319

    Strain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level

  • S56.319A

    Strain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, initial encounter

  • S56.319D

    Strain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, subsequent encounter

  • S56.319S

    Strain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, sequela

  • S56.32

    Laceration of extensor or abductor muscles, fascia and tendons of thumb at forearm level

  • S56.321

    Laceration of extensor or abductor muscles, fascia and tendons of right thumb at forearm level

  • S56.321A

    Laceration of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, initial encounter

  • S56.321D

    Laceration of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, subsequent encounter

  • S56.321S

    Laceration of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, sequela

  • S56.322

    Laceration of extensor or abductor muscles, fascia and tendons of left thumb at forearm level

  • S56.322A

    Laceration of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, initial encounter

  • S56.322D

    Laceration of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, subsequent encounter

  • S56.322S

    Laceration of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, sequela

  • S56.329

    Laceration of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level

  • S56.329A

    Laceration of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, initial encounter

  • S56.329D

    Laceration of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, subsequent encounter

  • S56.329S

    Laceration of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, sequela

  • S56.39

    Other injury of extensor or abductor muscles, fascia and tendons of thumb at forearm level

  • S56.391

    Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level

  • S56.391A

    Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, initial encounter

  • S56.391D

    Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, subsequent encounter

  • S56.391S

    Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, sequela

  • S56.392

    Other injury of extensor or abductor muscles, fascia and tendons of left thumb at forearm level

  • S56.392A

    Other injury of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, initial encounter

  • S56.392D

    Other injury of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, subsequent encounter

  • S56.392S

    Other injury of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, sequela

  • S56.399

    Other injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level

  • S56.399A

    Other injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, initial encounter

  • S56.399D

    Other injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, subsequent encounter

  • S56.399S

    Other injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, sequela

  • S56.4

    Injury of extensor muscle, fascia and tendon of other and unspecified finger at forearm level

  • S56.40

    Unspecified injury of extensor muscle, fascia and tendon of other and unspecified finger at forearm level

  • S56.401

    Unspecified injury of extensor muscle, fascia and tendon of right index finger at forearm level

  • S56.401A

    Unspecified injury of extensor muscle, fascia and tendon of right index finger at forearm level, initial encounter

  • S56.401D

    Unspecified injury of extensor muscle, fascia and tendon of right index finger at forearm level, subsequent encounter

  • S56.401S

    Unspecified injury of extensor muscle, fascia and tendon of right index finger at forearm level, sequela

  • S56.402

    Unspecified injury of extensor muscle, fascia and tendon of left index finger at forearm level

  • S56.402A

    Unspecified injury of extensor muscle, fascia and tendon of left index finger at forearm level, initial encounter

  • S56.402D

    Unspecified injury of extensor muscle, fascia and tendon of left index finger at forearm level, subsequent encounter

  • S56.402S

    Unspecified injury of extensor muscle, fascia and tendon of left index finger at forearm level, sequela

  • S56.403

    Unspecified injury of extensor muscle, fascia and tendon of right middle finger at forearm level

  • S56.403A

    Unspecified injury of extensor muscle, fascia and tendon of right middle finger at forearm level, initial encounter

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