Oth nondisp fx of base of first MC bone, right hand, init

This code signifies a break at the very bottom of the first metacarpal bone (the thumb bone closest to the wrist) in the right hand. The bone fragments remain in their normal anatomical position, meaning there is no significant displacement. This diagnosis is for the initial treatment of a closed fracture, where the skin remains intact over the injury.

Use this code for patients presenting with a newly diagnosed, non-displaced fracture of the base of the right first metacarpal. This typically occurs after a direct impact or fall onto the thumb. It is appropriate for the initial encounter where definitive treatment, such as splinting or casting, is being initiated.

• Confirm the fracture is specifically of the base of the first metacarpal and not another part of the bone.
• Verify the fracture is nondisplaced and closed to ensure accurate coding.
• The "A" at the end of the code indicates an initial encounter for this specific injury. Subsequent encounters will require different seventh characters.