Is S66.099S a billable code?
Yes. S66.099S is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
S66.099S: Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
S66.099S is a billable ICD-10-CM diagnosis code for other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with S66.099S already added.Good Faith EstimateStart a cost estimate with S66.099S already added.CMS-1500 Claim FormFill a claim form with S66.099S in box 21.
Other codes in S66.099 Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level
S66.099S questions
What does S66.099S mean?
S66.099S is the ICD-10-CM code for Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela. 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.