S63.103Unspecified subluxation of unspecified thumb

S63.103 is the ICD-10-CM diagnosis code for unspecified subluxation of unspecified thumb. It belongs to category S63 (dislocation and sprain of joints and ligaments 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 S63.10, choose S63.103 (subluxation of unspecified thumb) only when documentation doesn't support a more specific option: subluxation of right thumb (S63.101), subluxation of left thumb (S63.102), dislocation of right thumb (S63.104), dislocation of left thumb (S63.105) and dislocation of unspecified thumb (S63.106).

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.