| ICD-10 Code | Description |
| 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 |
| S66.402A | Unspecified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter |
| S66.402D | Unspecified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter |
| S66.402S | Unspecified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, sequela |
| S66.409A | Unspecified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter |
| S66.409D | Unspecified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter |
| S66.409S | Unspecified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela |
| S66.411A | Strain of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter |
| S66.411D | Strain of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter |
| S66.411S | Strain of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, sequela |
| S66.412A | Strain of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter |
| S66.412D | Strain of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter |
| S66.412S | Strain of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, sequela |
| S66.419A | Strain of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter |
| S66.419D | Strain of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter |
| S66.419S | Strain of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela |
| S66.421A | Laceration of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter |
| S66.421D | Laceration of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter |
| S66.421S | Laceration of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, sequela |
| S66.422A | Laceration of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter |
| S66.422D | Laceration of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter |
| S66.422S | Laceration of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, sequela |
| S66.429A | Laceration of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter |
| S66.429D | Laceration of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter |
| S66.429S | Laceration of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela |
| S66.491A | Other specified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter |
| S66.491D | Other specified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter |
| S66.491S | Other specified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, sequela |
| S66.492A | Other specified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter |
| S66.492D | Other specified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter |
| S66.492S | Other specified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, sequela |
| S66.499A | Other specified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter |
| S66.499D | Other specified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter |
| S66.499S | Other specified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela |
