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

This code signifies a break at the base of any metacarpal bone in the hand that has not shifted from its normal anatomical position. It indicates the initial treatment for a fracture where the skin remains intact over the injury site.

Apply this code for a patient presenting with a newly diagnosed, non-displaced fracture at the base of any metacarpal bone (e.g., due to a fall or direct impact) when the skin is not broken. This is appropriate for the initial evaluation and management of such an injury.

• Ensure documentation specifies "nondisplaced" and "base of metacarpal" for accurate code assignment.
• Confirm the encounter is "initial" and the fracture is "closed" to justify the 7th character 'A'.
• If the specific metacarpal bone is known, a more precise code (e.g., S62.341A for the second metacarpal) should be used instead of this "unspecified" code.