Disp fx of proximal phalanx of left thumb, init for opn fx

This code signifies a break in the upper part of the thumb bone closest to the hand on the left side, where the bone fragments are not properly aligned. The fracture has broken through the skin, exposing the bone to the outside environment.

Apply this code for the initial treatment of a patient presenting with an open, displaced fracture of the proximal phalanx of the left thumb. This is appropriate for the first encounter where definitive treatment, such as surgical repair or initial wound management, is provided.

• Ensure documentation clearly specifies "displaced" and "open" for accurate code assignment.
• Verify the laterality (left thumb) and the specific bone (proximal phalanx) are documented.
• Remember the "B" seventh character indicates an initial encounter for an open fracture.