Nondisp fx of base of 4th MC bone, r hand, init for opn fx

This code signifies a break in the base of the fourth metacarpal bone in the right hand that has not shifted from its normal anatomical position. Importantly, this fracture is an open type, meaning there is a wound communicating with the fracture site, and this is the patient's first presentation for treatment of this injury.

Apply this code for patients presenting with an acute, open fracture at the base of the right fourth metacarpal. This is appropriate when the fracture fragments remain aligned and the patient is receiving initial active treatment for the injury, such as surgical repair or initial wound management.

• Ensure documentation specifies "nondisplaced" and "open fracture" at the base of the fourth metacarpal, right hand.
• Confirm this is the initial encounter for active treatment of the fracture; subsequent care would use a different encounter character.
• Always code open fractures with an additional external cause code to describe the mechanism of injury.