S66.899 — Other injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand
Is S66.899 billable?
No — S66.899 is a non-billable header code. S66.899 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 S66.899.
Billable codes under this header
- S66.899AOther injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand, initial encounter
- S66.899DOther injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand, subsequent encounter
- S66.899SOther injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand, sequela
S66.899 at a glance
| Code | S66.899 |
|---|---|
| Description | Other injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S66.899 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S66.89, the nearest indexed parent of S66.899. Use them to find the family, then select the specific code.
- Injury › muscle › hand › specified › site NEC › specified type NEC
Use additional code — inherited from Chapter 19
Report an additional code alongside S66.899 to fully describe the condition. S66.899 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 S66.899, but a patient may have both at the same time. When documentation supports it, S66.899 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S60-S69
The conditions below are not part of S66.899, but a patient may have both at the same time. When documentation supports it, S66.899 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S66
The conditions below are not part of S66.899, but a patient may have both at the same time. When documentation supports it, S66.899 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 S66.899 is sequenced first depends on the reason for the encounter.
- any associated open wound (S61.-)
What codes fall under S66.899? (3)
- S66.899AOther injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand, initial encounter
- S66.899DOther injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand, subsequent encounter
- S66.899SOther injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand, sequela
How long has S66.899 existed?
S66.899 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.