| S66.00 | Unspecified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.001 | Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.001A | Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.001D | Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.001S | Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.002 | Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.002A | Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.002D | Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.002S | Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.009 | Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.009A | Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.009D | Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.009S | Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.01 | Strain of long flexor muscle, fascia and tendon of thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.011 | Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.011A | Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.011D | Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.011S | Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.012 | Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.012A | Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.012D | Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.012S | Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.019 | Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.019A | Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.019D | Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.019S | Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.02 | Laceration of long flexor muscle, fascia and tendon of thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.021 | Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.021A | Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.021D | Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.021S | Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.022 | Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.022A | Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.022D | Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.022S | Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.029 | Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.029A | Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.029D | Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.029S | Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.09 | Other specified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.091 | Other specified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.091A | Other specified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.091D | Other specified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.091S | Other specified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.092 | Other specified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.092A | Other specified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.092D | Other specified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.092S | Other specified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, sequela | BILLABLE CODE |
| S66.099 | Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level | NON-BILLABLE CODE |
| S66.099A | Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter | BILLABLE CODE |
| S66.099D | Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter | BILLABLE CODE |
| S66.099S | Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela | BILLABLE CODE |
