Pathological fracture in other disease, other site, sequela

This code signifies a pathological fracture occurring in an anatomical location not specified elsewhere, where the fracture is a long-term consequence or late effect of an underlying disease process. This implies the fracture is not acute but rather a residual condition from a prior pathological fracture event.

Apply this code when documenting a healed or healing pathological fracture in an "other site" (e.g., rib, sternum, scapula) that is a sequela of a systemic disease such as osteoporosis, metastatic cancer, or Paget's disease. Documentation should clearly indicate the fracture is a late effect and specify the underlying disease.

• Always sequence the underlying disease causing the pathological fracture first, if still active.
• Distinguish from acute pathological fractures (M84.5- series) and stress fractures (M84.3- series).
• Ensure documentation specifies "sequela" or "late effect" to support the 7th character 'S'.