S66.11 — Strain of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level
Is S66.11 billable?
No — S66.11 is a non-billable header code. S66.11 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 30 billable codes beneath S66.11.
Billable codes under this header
- S66.110AStrain of flexor muscle, fascia and tendon of right index finger at wrist and hand level, initial encounter
- S66.110DStrain of flexor muscle, fascia and tendon of right index finger at wrist and hand level, subsequent encounter
- S66.110SStrain of flexor muscle, fascia and tendon of right index finger at wrist and hand level, sequela
- S66.111AStrain of flexor muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter
- S66.111DStrain of flexor muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter
- S66.111SStrain of flexor muscle, fascia and tendon of left index finger at wrist and hand level, sequela
- S66.112AStrain of flexor muscle, fascia and tendon of right middle finger at wrist and hand level, initial encounter
- S66.112DStrain of flexor muscle, fascia and tendon of right middle finger at wrist and hand level, subsequent encounter
- S66.112SStrain of flexor muscle, fascia and tendon of right middle finger at wrist and hand level, sequela
- S66.113AStrain of flexor muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter
- S66.113DStrain of flexor muscle, fascia and tendon of left middle finger at wrist and hand level, subsequent encounter
- S66.113SStrain of flexor muscle, fascia and tendon of left middle finger at wrist and hand level, sequela
- S66.114AStrain of flexor muscle, fascia and tendon of right ring finger at wrist and hand level, initial encounter
- S66.114DStrain of flexor muscle, fascia and tendon of right ring finger at wrist and hand level, subsequent encounter
- S66.114SStrain of flexor muscle, fascia and tendon of right ring finger at wrist and hand level, sequela
- S66.115AStrain of flexor muscle, fascia and tendon of left ring finger at wrist and hand level, initial encounter
- S66.115DStrain of flexor muscle, fascia and tendon of left ring finger at wrist and hand level, subsequent encounter
- S66.115SStrain of flexor muscle, fascia and tendon of left ring finger at wrist and hand level, sequela
- S66.116AStrain of flexor muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter
- S66.116DStrain of flexor muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter
- S66.116SStrain of flexor muscle, fascia and tendon of right little finger at wrist and hand level, sequela
- S66.117AStrain of flexor muscle, fascia and tendon of left little finger at wrist and hand level, initial encounter
- S66.117DStrain of flexor muscle, fascia and tendon of left little finger at wrist and hand level, subsequent encounter
- S66.117SStrain of flexor muscle, fascia and tendon of left little finger at wrist and hand level, sequela
- S66.118AStrain of flexor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter
- S66.118DStrain of flexor muscle, fascia and tendon of other finger at wrist and hand level, subsequent encounter
- S66.118SStrain of flexor muscle, fascia and tendon of other finger at wrist and hand level, sequela
- S66.119AStrain of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level, initial encounter
- S66.119DStrain of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter
- S66.119SStrain of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela
S66.11 at a glance
| Code | S66.11 |
|---|---|
| Description | Strain of flexor 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 |
How is S66.11 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to S66.11. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Injury › muscle › finger › index › flexor › hand level › strain
- Injury › muscle › finger › little › flexor › hand level › strain
- Injury › muscle › finger › middle › flexor › hand level › strain
- Injury › muscle › finger › ring › flexor › hand level › strain
Use additional code — inherited from Chapter 19
Report an additional code alongside S66.11 to fully describe the condition. S66.11 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 S66.11, but a patient may have both at the same time. When documentation supports it, S66.11 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S60-S69
The conditions below are not part of S66.11, but a patient may have both at the same time. When documentation supports it, S66.11 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S66
The conditions below are not part of S66.11, but a patient may have both at the same time. When documentation supports it, S66.11 and the excluded code may both be reported.
- sprain of joints and ligaments of wrist and hand (S63.-)
Excludes2 — not included here — inherited from S66.1
The conditions below are not part of S66.11, but a patient may have both at the same time. When documentation supports it, S66.11 and the excluded code may both be reported.
- Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level (S66.0-)
Code also — inherited from S66
Two codes may be needed to describe the condition fully. Whether S66.11 is sequenced first depends on the reason for the encounter.
- any associated open wound (S61.-)
What codes fall under S66.11? (10)
- S66.110Strain of flexor muscle, fascia and tendon of right index finger at wrist and hand levelnot billable
- S66.111Strain of flexor muscle, fascia and tendon of left index finger at wrist and hand levelnot billable
- S66.112Strain of flexor muscle, fascia and tendon of right middle finger at wrist and hand levelnot billable
- S66.113Strain of flexor muscle, fascia and tendon of left middle finger at wrist and hand levelnot billable
- S66.114Strain of flexor muscle, fascia and tendon of right ring finger at wrist and hand levelnot billable
- S66.115Strain of flexor muscle, fascia and tendon of left ring finger at wrist and hand levelnot billable
- S66.116Strain of flexor muscle, fascia and tendon of right little finger at wrist and hand levelnot billable
- S66.117Strain of flexor muscle, fascia and tendon of left little finger at wrist and hand levelnot billable
- S66.118Strain of flexor muscle, fascia and tendon of other finger at wrist and hand levelnot billable
- S66.119Strain of flexor muscle, fascia and tendon of unspecified finger at wrist and hand levelnot billable
How long has S66.11 existed?
S66.11 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 S66.1 family? (3)
- S66.10Unspecified injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.12Laceration of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.19Other injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable