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
  • S66.329D

    Laceration of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter

  • S66.329S

    Laceration of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela

  • S66.39

    Other injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level

  • S66.390

    Other injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level

  • S66.390A

    Other injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level, initial encounter

  • S66.390D

    Other injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level, subsequent encounter

  • S66.390S

    Other injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level, sequela

  • S66.391

    Other injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level

  • S66.391A

    Other injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter

  • S66.391D

    Other injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter

  • S66.391S

    Other injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level, sequela

  • S66.392

    Other injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level

  • S66.392A

    Other injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, initial encounter

  • S66.392D

    Other injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, subsequent encounter

  • S66.392S

    Other injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, sequela

  • S66.393

    Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level

  • S66.393A

    Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter

  • S66.393D

    Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, subsequent encounter

  • S66.393S

    Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, sequela

  • S66.394

    Other injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level

  • S66.394A

    Other injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, initial encounter

  • S66.394D

    Other injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, subsequent encounter

  • S66.394S

    Other injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, sequela

  • S66.395

    Other injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level

  • S66.395A

    Other injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, initial encounter

  • S66.395D

    Other injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, subsequent encounter

  • S66.395S

    Other injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, sequela

  • S66.396

    Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level

  • S66.396A

    Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter

  • S66.396D

    Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter

  • S66.396S

    Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, sequela

  • S66.397

    Other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level

  • S66.397A

    Other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, initial encounter

  • S66.397D

    Other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, subsequent encounter

  • S66.397S

    Other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, sequela

  • S66.398

    Other injury of extensor muscle, fascia and tendon of other finger at wrist and hand level

  • S66.398A

    Other injury of extensor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter

  • S66.398D

    Other injury of extensor muscle, fascia and tendon of other finger at wrist and hand level, subsequent encounter

  • S66.398S

    Other injury of extensor muscle, fascia and tendon of other finger at wrist and hand level, sequela

  • S66.399

    Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level

  • S66.399A

    Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, initial encounter

  • S66.399D

    Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter

  • S66.399S

    Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela

  • S66.4

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

  • S66.40

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

  • S66.401

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

  • S66.401A

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

  • S66.401D

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

  • S66.401S

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

  • S66.402

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

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