S66.00
S66.00: Unspecified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level
Non-billable headerICD-10-CMunspecified
S66.00 is a non-billable header ICD-10-CM code for unspecified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category S66
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead S66.00
3 child codes. Green means billable.
- S66.001Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level
- S66.002Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level
- S66.009Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level