Unsp fx r low leg, subs for opn fx type I/2 w delay heal

This code indicates a fracture of the right lower leg, where the specific bone involved (tibia, fibula, or ankle) is not documented, and the fracture was initially an open fracture of Gustilo type I or II. The patient is in a subsequent phase of care, and the fracture is exhibiting delayed healing.

Use this code for follow-up encounters when a patient with a previously diagnosed open type I or II right lower leg fracture (site unspecified) is presenting with evidence of delayed union or prolonged healing. This applies after the initial acute treatment phase, but before definitive healing or nonunion is established.

• Requires documentation of an open fracture (Type I or II) at the initial injury and current delayed healing.
• Ensure laterality (right) and the "unspecified" nature of the lower leg fracture are clearly supported.
• Do not use for initial encounter or for closed fractures; also, differentiate from nonunion.