S64.0Injury of ulnar nerve at wrist and hand level

S64.0 is the ICD-10-CM diagnosis code for injury of ulnar nerve at wrist and hand level. It belongs to category S64 (injury of nerves 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 S64 (injury of nerves at wrist and hand level), S64.0 is specifically for injury of ulnar nerve at wrist and hand level. Related codes cover median nerve at wrist and hand level (S64.1), radial nerve at wrist and hand level (S64.2), digital nerve of thumb (S64.3), digital nerve of other and unspecified finger (S64.4), other nerves at wrist and hand level (S64.8) and unspecified nerve at wrist and hand level (S64.9).

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.