Is S66.311 a billable code?
No. S66.311 is a header code that groups 3 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
S66.311: Strain of extensor muscle, fascia and tendon of left index finger at wrist and hand level
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
S66.311 groups related diagnoses under strain of extensor muscle, fascia and tendon of left index finger at wrist and hand level. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under S66.311
- 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
Other codes in S66.31 Strain of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level
- S66.310Strain of extensor muscle, fascia and tendon of right index finger at wrist and hand levelheader
- S66.312Strain of extensor muscle, fascia and tendon of right middle finger at wrist and hand levelheader
- S66.313Strain of extensor muscle, fascia and tendon of left middle finger at wrist and hand levelheader
- S66.314Strain of extensor muscle, fascia and tendon of right ring finger at wrist and hand levelheader
- S66.315Strain of extensor muscle, fascia and tendon of left ring finger at wrist and hand levelheader
- S66.316Strain of extensor muscle, fascia and tendon of right little finger at wrist and hand levelheader
- S66.317Strain of extensor muscle, fascia and tendon of left little finger at wrist and hand levelheader
- S66.318Strain of extensor muscle, fascia and tendon of other finger at wrist and hand levelheader
- S66.319Strain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand levelheader
S66.311 questions
What does S66.311 mean?
S66.311 is the ICD-10-CM code for Strain of extensor muscle, fascia and tendon of left index finger at wrist and hand level. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.