Nondisp fx of base of unsp metacarpal bone, init for opn fx

This code describes a break at the bottom portion of an unknown metacarpal bone in the hand that has not shifted out of its normal alignment. This specific code is used when the fracture is an open type, meaning the skin has been broken, and it represents the initial treatment encounter for this injury.

Apply this code for a patient presenting for the first treatment of a metacarpal base fracture where the specific metacarpal (e.g., first, second) is not documented. It is crucial that the documentation clearly indicates the fracture is nondisplaced and that there is an open wound communicating with the fracture site.

• Ensure documentation specifies "open fracture" and "initial encounter" for accurate code assignment.
• If the specific metacarpal bone is identified (e.g., base of first metacarpal), a more specific code should be chosen.
• Verify that the fracture is indeed nondisplaced; displaced fractures require different codes.