S66.2 — Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level
Not billable
Is S66.2 billable?
No — S66.2 is a non-billable header code. S66.2 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 36 billable codes beneath S66.2.
Billable codes under this header
- S66.201AUnspecified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter
- S66.201DUnspecified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter
- S66.201SUnspecified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level, sequela
- S66.202AUnspecified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter
- S66.202DUnspecified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter
- S66.202SUnspecified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand level, sequela
- S66.209AUnspecified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter
- S66.209DUnspecified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter
- S66.209SUnspecified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela
- S66.211AStrain of extensor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter
- S66.211DStrain of extensor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter
- S66.211SStrain of extensor muscle, fascia and tendon of right thumb at wrist and hand level, sequela
- S66.212AStrain of extensor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter
- S66.212DStrain of extensor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter
- S66.212SStrain of extensor muscle, fascia and tendon of left thumb at wrist and hand level, sequela
- S66.219AStrain of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter
- S66.219DStrain of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter
- S66.219SStrain of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela
- S66.221ALaceration of extensor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter
- S66.221DLaceration of extensor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter
- S66.221SLaceration of extensor muscle, fascia and tendon of right thumb at wrist and hand level, sequela
- S66.222ALaceration of extensor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter
- S66.222DLaceration of extensor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter
- S66.222SLaceration of extensor muscle, fascia and tendon of left thumb at wrist and hand level, sequela
- S66.229ALaceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter
- S66.229DLaceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter
- S66.229SLaceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela
- S66.291AOther specified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter
- S66.291DOther specified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter
- S66.291SOther specified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level, sequela
- S66.292AOther specified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter
- S66.292DOther specified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter
- S66.292SOther specified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand level, sequela
- S66.299AOther specified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter
- S66.299DOther specified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter
- S66.299SOther specified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela
S66.2 at a glance
| Code | S66.2 |
|---|---|
| Description | Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Use additional code — inherited from Chapter 19
Report an additional code alongside S66.2 to fully describe the condition. S66.2 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 S66.2, but a patient may have both at the same time. When documentation supports it, S66.2 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S60-S69
The conditions below are not part of S66.2, but a patient may have both at the same time. When documentation supports it, S66.2 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S66
The conditions below are not part of S66.2, but a patient may have both at the same time. When documentation supports it, S66.2 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 S66.2 is sequenced first depends on the reason for the encounter.
- any associated open wound (S61.-)
What codes fall under S66.2? (4)
- S66.20Unspecified injury of extensor muscle, fascia and tendon of thumb at wrist and hand levelnot billable
- S66.21Strain of extensor muscle, fascia and tendon of thumb at wrist and hand levelnot billable
- S66.22Laceration of extensor muscle, fascia and tendon of thumb at wrist and hand levelnot billable
- S66.29Other specified injury of extensor muscle, fascia and tendon of thumb at wrist and hand levelnot billable
How long has S66.2 existed?
S66.2 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.
What other codes are in the S66 family? (7)
- S66.0Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand levelnot billable
- S66.1Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.3Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.4Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand levelnot billable
- S66.5Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.8Injury of other specified muscles, fascia and tendons at wrist and hand levelnot billable
- S66.9Injury of unspecified muscle, fascia and tendon at wrist and hand levelnot billable