S66.999
S66.999: Other injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand
Non-billable headerICD-10-CMunspecified
S66.999 is a non-billable header ICD-10-CM code for other injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand. 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 S66.999
3 child codes. Green means billable.
- S66.999AOther injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand, initial encounter
- S66.999DOther injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand, subsequent encounter
- S66.999SOther injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand, sequela