Fx unsp metatarsal bone(s), unsp foot, init for opn fx

This code signifies a break in one or more of the long bones in the midfoot, where the skin and soft tissue are also compromised, exposing the bone to the outside environment. The specific metatarsal bone affected is not documented, nor is the laterality of the foot. This code is used for the initial treatment of such an injury.

Apply this code when documentation clearly indicates an open fracture of an unspecified metatarsal bone in an unspecified foot, and the patient is receiving initial active treatment for the injury. This is appropriate for emergency department visits, initial surgical interventions, or the first encounter for definitive care.

• Ensure the documentation explicitly states "open fracture" and that the specific metatarsal bone(s) or foot laterality are not identified.
• Confirm this is the patient's initial encounter for this specific injury; subsequent encounters will require a different seventh character.
• Always sequence this code as the primary diagnosis if it is the reason for the encounter.