Is S66.401 a billable code?
No. S66.401 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
S66.401: Unspecified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
S66.401 groups related diagnoses under unspecified injury of intrinsic muscle, fascia and tendon of right thumb 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 S66.401
- S66.401AUnspecified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter
- S66.401DUnspecified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter
- S66.401SUnspecified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level, sequela
Other codes in S66.40 Unspecified injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
S66.401 questions
What does S66.401 mean?
S66.401 is the ICD-10-CM code for Unspecified injury of intrinsic muscle, fascia and tendon of right thumb 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.