Unsp fracture of unsp foot, subs for fx w nonunion

This code signifies an unconfirmed fracture in an unspecified bone of the foot that has failed to heal properly after initial treatment. The patient is presenting for ongoing care related to this persistent nonunion.

This code is appropriate when documentation indicates a foot fracture, but the specific bone involved is not identified, and the fracture has not united. It is used for follow-up visits where the nonunion is the primary focus of the encounter, such as for evaluation of healing progress, pain management, or planning for further intervention.

• Ensure the documentation clearly states "nonunion" and that the encounter is subsequent to the initial treatment.
• Avoid using this code if a more specific foot bone (e.g., metatarsal, calcaneus) is identified; instead, use the appropriate specific fracture code with the nonunion seventh character.
• If the laterality (left or right foot) is known, a more specific code should be selected.