S66.991 — Other injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand
Is S66.991 billable?
No — S66.991 is a non-billable header code. S66.991 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath S66.991.
Billable codes under this header
- S66.991AOther injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, initial encounter
- S66.991DOther injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, subsequent encounter
- S66.991SOther injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, sequela
S66.991 at a glance
| Code | S66.991 |
|---|---|
| Description | Other injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S66.991 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S66.99, the nearest indexed parent of S66.991. Use them to find the family, then select the specific code.
- Injury › muscle › hand › specified › type NEC
Use additional code — inherited from Chapter 19
Report an additional code alongside S66.991 to fully describe the condition. S66.991 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S66.991, but a patient may have both at the same time. When documentation supports it, S66.991 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S60-S69
The conditions below are not part of S66.991, but a patient may have both at the same time. When documentation supports it, S66.991 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S66
The conditions below are not part of S66.991, but a patient may have both at the same time. When documentation supports it, S66.991 and the excluded code may both be reported.
- sprain of joints and ligaments of wrist and hand (S63.-)
Code also — inherited from S66
Two codes may be needed to describe the condition fully. Whether S66.991 is sequenced first depends on the reason for the encounter.
- any associated open wound (S61.-)
What codes fall under S66.991? (3)
- S66.991AOther injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, initial encounter
- S66.991DOther injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, subsequent encounter
- S66.991SOther injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, sequela
How long has S66.991 existed?
S66.991 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.