S66.397Other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level

S66.397 is the ICD-10-CM diagnosis code for other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level. It belongs to category S66 (injury of muscle, fascia and tendon at wrist and hand level), block S60-S69 (injuries to the wrist, hand and fingers) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S66.39 (other injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level), S66.397 is specifically for other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level. Related codes cover right index finger at wrist and hand level (S66.390), left index finger at wrist and hand level (S66.391), right middle finger at wrist and hand level (S66.392), left middle finger at wrist and hand level (S66.393), right ring finger at wrist and hand level (S66.394), left ring finger at wrist and hand level (S66.395), right little finger at wrist and hand level (S66.396), other finger at wrist and hand level (S66.398) and 1 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.