Disp fx of distal phalanx of unsp thumb, init for opn fx

This code signifies a break in the outermost bone of the thumb, where the bone fragments are no longer in their normal alignment. The fracture has broken through the skin, exposing the bone to the outside environment. This code is used for the initial treatment phase of such an injury.

This code is appropriate for documenting the initial presentation and treatment of a patient who has sustained an open, displaced fracture of the distal phalanx of either the right or left thumb. This includes situations like a crush injury or a laceration with an underlying bone break where the bone is visible.

• Ensure documentation clearly states "open" and "displaced" for the distal phalanx of the thumb.
• Verify laterality (right or left) if specified; otherwise, "unspecified" is appropriate.
• This "B" extension indicates an initial encounter for an open fracture; subsequent encounters will require different seventh characters.