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
  • S66.193S

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

  • S66.194

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

  • S66.194A

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

  • S66.194D

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

  • S66.194S

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

  • S66.195

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

  • S66.195A

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

  • S66.195D

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

  • S66.195S

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

  • S66.196

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

  • S66.196A

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

  • S66.196D

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

  • S66.196S

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

  • S66.197

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

  • S66.197A

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

  • S66.197D

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

  • S66.197S

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

  • S66.198

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

  • S66.198A

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

  • S66.198D

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

  • S66.198S

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

  • S66.199

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

  • S66.199A

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

  • S66.199D

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

  • S66.199S

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

  • S66.2

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

  • S66.20

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

  • S66.201

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

  • S66.201A

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

  • S66.201D

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

  • S66.201S

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

  • S66.202

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

  • S66.202A

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

  • S66.202D

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

  • S66.202S

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

  • S66.209

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

  • S66.209A

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

  • S66.209D

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

  • S66.209S

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

  • S66.21

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

  • S66.211

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

  • S66.211A

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

  • S66.211D

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

  • S66.211S

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

  • S66.212

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

  • S66.212A

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

  • S66.212D

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

  • S66.212S

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

  • S66.219

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

  • S66.219A

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

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