Unsp fx low end l femr, subs for opn fx type I/2 w nonunion

This code describes a situation where the lower part of the left thigh bone (femur) has an unspecific fracture that has not healed properly (nonunion). This is being addressed during a subsequent encounter, and the original fracture was an open fracture of either Type I or Type II.

Use this code for follow-up visits or hospitalizations where a patient is receiving treatment for a nonunion of an unspecified fracture of the distal left femur. The initial injury must have been an open fracture classified as Type I or Type II, and the current encounter is for ongoing management of the nonunion.

• Ensure documentation clearly states "nonunion" and specifies the "subsequent encounter" for this specific fracture.
• Verify that the original fracture was documented as an open fracture, Type I or II, to justify the "M" seventh character.
• Do not use for initial encounters or for closed fractures.