M24.0Loose body in joint

M24.0 is the ICD-10-CM diagnosis code for Loose body in joint. It belongs to category M24 (other specific joint derangements), 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 8 subcodes must be used instead.

Within M24 (other specific joint derangements), M24.0 is specifically for Loose body in joint. Related codes cover other articular cartilage disorders (M24.1), disorder of ligament (M24.2), pathological dislocation of joint, not elsewhere classified (M24.3), recurrent dislocation of joint (M24.4), contracture of joint (M24.5), ankylosis of joint (M24.6), Protrusio acetabuli (M24.7), not elsewhere classified (M24.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: M24.00 (joint), M24.01 (shoulder), M24.02 (elbow), M24.03 (wrist), M24.04 (joints), M24.05 (hip), M24.07 (joints) and M24.08 (site).

The conditions in its Excludes2 note aren't part of M24.0, but may be coded alongside it if the patient has both: loose body in knee (M23.4).

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