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

This code describes a situation where a patient has a non-healing fracture of the trochanteric region of the left femur, which was initially an open fracture of Type I or II. The "subsequent encounter" indicates that the patient is receiving routine care during the healing or recovery phase, rather than initial treatment.

This code is appropriate for follow-up visits where a patient is being managed for a previously diagnosed open trochanteric fracture of the left femur that has failed to unite. This includes scenarios such as cast changes, wound care, or monitoring for complications related to the nonunion, after the initial definitive treatment has been rendered.

• Ensure documentation clearly specifies "left femur" and "trochanteric" region.
• Verify the original fracture was an "open fracture type I or II" and that "nonunion" is explicitly documented.
• Confirm this is a subsequent encounter, not the initial treatment or a sequela encounter.