Oth disp fx of base of 1st MC bone, unsp hand, 7thB

This code signifies a fracture at the base of the first metacarpal bone (thumb) that is displaced, meaning the bone fragments are not properly aligned. It specifically refers to an open fracture, where the bone has broken through the skin, and is being treated for the first time. The affected hand is not specified.

Use this code for a patient presenting with an open, displaced fracture at the base of their first metacarpal bone, regardless of which hand is injured, during their initial treatment encounter. This applies to situations where the fracture has created an open wound, exposing the bone.

• Ensure documentation clearly states "displaced" and "open fracture" for the base of the first metacarpal.
• The "unspecified hand" component means this code is used when the medical record does not specify left or right.
• "Initial encounter" is crucial; subsequent care for this fracture will require a different encounter character.