S66.3 — Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level
Not billable
Is S66.3 billable?
No — S66.3 is a non-billable header code. S66.3 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 60 billable codes beneath S66.3.
Billable codes under this header
- S66.300AUnspecified injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level, initial encounter
- S66.300DUnspecified injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level, subsequent encounter
- S66.300SUnspecified injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level, sequela
- S66.301AUnspecified injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter
- S66.301DUnspecified injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter
- S66.301SUnspecified injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level, sequela
- S66.302AUnspecified injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, initial encounter
- S66.302DUnspecified injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, subsequent encounter
- S66.302SUnspecified injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, sequela
- S66.303AUnspecified injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter
- S66.303DUnspecified injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, subsequent encounter
- S66.303SUnspecified injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, sequela
- S66.304AUnspecified injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, initial encounter
- S66.304DUnspecified injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, subsequent encounter
- S66.304SUnspecified injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, sequela
- S66.305AUnspecified injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, initial encounter
- S66.305DUnspecified injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, subsequent encounter
- S66.305SUnspecified injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, sequela
- S66.306AUnspecified injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter
- S66.306DUnspecified injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter
- S66.306SUnspecified injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level, sequela
- S66.307AUnspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, initial encounter
- S66.307DUnspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, subsequent encounter
- S66.307SUnspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, sequela
- S66.308AUnspecified injury of extensor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter
- S66.308DUnspecified injury of extensor muscle, fascia and tendon of other finger at wrist and hand level, subsequent encounter
- S66.308SUnspecified injury of extensor muscle, fascia and tendon of other finger at wrist and hand level, sequela
- S66.309AUnspecified injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, initial encounter
- S66.309DUnspecified injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter
- S66.309SUnspecified injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela
- S66.310AStrain of extensor muscle, fascia and tendon of right index finger at wrist and hand level, initial encounter
- S66.310DStrain of extensor muscle, fascia and tendon of right index finger at wrist and hand level, subsequent encounter
- S66.310SStrain of extensor muscle, fascia and tendon of right index finger at wrist and hand level, sequela
- S66.311AStrain of extensor muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter
- S66.311DStrain of extensor muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter
- S66.311SStrain of extensor muscle, fascia and tendon of left index finger at wrist and hand level, sequela
- S66.312AStrain of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, initial encounter
- S66.312DStrain of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, subsequent encounter
- S66.312SStrain of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, sequela
- S66.313AStrain of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter
- S66.313DStrain of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, subsequent encounter
- S66.313SStrain of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, sequela
- S66.314AStrain of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, initial encounter
- S66.314DStrain of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, subsequent encounter
- S66.314SStrain of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, sequela
- S66.315AStrain of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, initial encounter
- S66.315DStrain of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, subsequent encounter
- S66.315SStrain of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, sequela
- S66.316AStrain of extensor muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter
- S66.316DStrain of extensor muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter
- S66.316SStrain of extensor muscle, fascia and tendon of right little finger at wrist and hand level, sequela
- S66.317AStrain of extensor muscle, fascia and tendon of left little finger at wrist and hand level, initial encounter
- S66.317DStrain of extensor muscle, fascia and tendon of left little finger at wrist and hand level, subsequent encounter
- S66.317SStrain of extensor muscle, fascia and tendon of left little finger at wrist and hand level, sequela
- S66.318AStrain of extensor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter
- S66.318DStrain of extensor muscle, fascia and tendon of other finger at wrist and hand level, subsequent encounter
- S66.318SStrain of extensor muscle, fascia and tendon of other finger at wrist and hand level, sequela
- S66.319AStrain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, initial encounter
- S66.319DStrain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter
- S66.319SStrain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela
S66.3 at a glance
| Code | S66.3 |
|---|---|
| Description | Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here
The conditions below are not part of S66.3, but a patient may have both at the same time. When documentation supports it, S66.3 and the excluded code may both be reported.
- Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level (S66.2-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S66.3 to fully describe the condition. S66.3 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 S66.3, but a patient may have both at the same time. When documentation supports it, S66.3 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S60-S69
The conditions below are not part of S66.3, but a patient may have both at the same time. When documentation supports it, S66.3 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S66
The conditions below are not part of S66.3, but a patient may have both at the same time. When documentation supports it, S66.3 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 S66.3 is sequenced first depends on the reason for the encounter.
- any associated open wound (S61.-)
What codes fall under S66.3? (4)
- S66.30Unspecified injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.31Strain of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.32Laceration of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.39Other injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
How long has S66.3 existed?
S66.3 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
- S66.2Injury of extensor muscle, fascia and tendon of thumb 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