M25.64Stiffness of hand, not elsewhere classified

M25.64 is the ICD-10-CM diagnosis code for Stiffness of hand, not elsewhere classified. It belongs to category M25 (other joint disorder, not elsewhere classified), block M20-M25 (other joint disorders) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within M25.6 (Stiffness of joint, not elsewhere classified), M25.64 is specifically for Stiffness of hand, not elsewhere classified. Related codes cover unspecified joint, not elsewhere classified (M25.60), shoulder, not elsewhere classified (M25.61), elbow, not elsewhere classified (M25.62), wrist, not elsewhere classified (M25.63), hip, not elsewhere classified (M25.65), knee, not elsewhere classified (M25.66), ankle and foot, not elsewhere classified (M25.67) and other specified joint, not elsewhere classified (M25.69).

To report this condition, pick the subcode that matches the documentation: M25.641 (classified), M25.642 (classified) and M25.649 (classified).

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