M84.459Pathological fracture, hip, unspecified

M84.459 is the ICD-10-CM diagnosis code for pathological fracture, hip, unspecified. It belongs to category M84 (disorder of continuity of bone), block M80-M85 (disorders of bone density and structure) 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 6 subcodes must be used instead.

Within M84.45, choose M84.459 (hip, unspecified) only when documentation doesn't support a more specific option: right femur (M84.451), left femur (M84.452), unspecified femur (M84.453) and pelvis (M84.454).

Codes in this range require a 7th character: A for initial encounter for fracture, D for subsequent encounter for fracture with routine healing, G for subsequent encounter for fracture with delayed healing, K for subsequent encounter for fracture with nonunion, P for subsequent encounter for fracture with malunion 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.