Is S66.591 a billable code?
No. S66.591 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
S66.591: Other injury of intrinsic 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
S66.591 groups related diagnoses under other injury of intrinsic 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 S66.591
- S66.591AOther injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter
- S66.591DOther injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter
- S66.591SOther injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, sequela
Other codes in S66.59 Other injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level
- S66.590Other injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand levelheader
- S66.592Other injury of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand levelheader
- S66.593Other injury of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand levelheader
- S66.594Other injury of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand levelheader
- S66.595Other injury of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand levelheader
- S66.596Other injury of intrinsic muscle, fascia and tendon of right little finger at wrist and hand levelheader
- S66.597Other injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand levelheader
- S66.598Other injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand levelheader
- S66.599Other injury of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand levelheader
S66.591 questions
What does S66.591 mean?
S66.591 is the ICD-10-CM code for Other injury of intrinsic 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.