Nondisp fx of proximal phalanx of left thumb, init

This code signifies a break in the bone of the thumb's first segment (closest to the hand) on the left side. The bone fragments remain in their normal anatomical alignment, and the skin over the fracture site is intact.

This code is appropriate for the initial treatment of a patient presenting with a newly diagnosed, non-displaced closed fracture of the proximal phalanx of the left thumb. This includes emergency department visits, initial orthopedic consultations, or primary care evaluations where the fracture is first identified and managed.

• Ensure documentation specifies "nondisplaced" and "closed" to support this specific code.
• The "A" at the end indicates an initial encounter for the fracture, regardless of subsequent visits for the same injury.
• Later encounters for routine healing or follow-up would require a different seventh character.