Unsp fx head of l femur, subs for opn fx type I/2 w nonunion

This code describes a situation where the top part of the left thigh bone, near the hip joint, has an unspecific break that has not healed properly. This particular nonunion is being addressed during a follow-up visit for an initial open fracture classified as Type I or II.

This code is appropriate for subsequent encounters when a patient is receiving ongoing treatment for a nonunion of an unstated fracture of the left femoral head, specifically when the initial injury was an open fracture of Gustilo-Anderson Type I or II. This would apply during follow-up appointments, surgical revisions for nonunion, or other ongoing management of the unhealed fracture.

• Ensure documentation clearly states "nonunion" and specifies the left femoral head.
• Verify the original injury was an open fracture, Type I or II, as this impacts the "M" seventh character.
• Do not use for initial encounters or for fractures that are healing normally.