| S56.011 | Strain of flexor muscle, fascia and tendon of right thumb at forearm level | NON-BILLABLE CODE |
| S56.011A | Strain of flexor muscle, fascia and tendon of right thumb at forearm level, initial encounter | BILLABLE CODE |
| S56.011D | Strain of flexor muscle, fascia and tendon of right thumb at forearm level, subsequent encounter | BILLABLE CODE |
| S56.011S | Strain of flexor muscle, fascia and tendon of right thumb at forearm level, sequela | BILLABLE CODE |
| S56.012 | Strain of flexor muscle, fascia and tendon of left thumb at forearm level | NON-BILLABLE CODE |
| S56.012A | Strain of flexor muscle, fascia and tendon of left thumb at forearm level, initial encounter | BILLABLE CODE |
| S56.012D | Strain of flexor muscle, fascia and tendon of left thumb at forearm level, subsequent encounter | BILLABLE CODE |
| S56.012S | Strain of flexor muscle, fascia and tendon of left thumb at forearm level, sequela | BILLABLE CODE |
| S56.019 | Strain of flexor muscle, fascia and tendon of unspecified thumb at forearm level | NON-BILLABLE CODE |
| S56.019A | Strain of flexor muscle, fascia and tendon of unspecified thumb at forearm level, initial encounter | BILLABLE CODE |
| S56.019D | Strain of flexor muscle, fascia and tendon of unspecified thumb at forearm level, subsequent encounter | BILLABLE CODE |
| S56.019S | Strain of flexor muscle, fascia and tendon of unspecified thumb at forearm level, sequela | BILLABLE CODE |
