Is S66.399D a billable code?
Yes. S66.399D 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
S66.399D: Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
S66.399D is a billable ICD-10-CM diagnosis code for other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with S66.399D already added.Good Faith EstimateStart a cost estimate with S66.399D already added.CMS-1500 Claim FormFill a claim form with S66.399D in box 21.
Other codes in S66.399 Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level
S66.399D questions
What does S66.399D mean?
S66.399D is the ICD-10-CM code for Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter. 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.