Disp fx of pisiform, unsp wrist, init for opn fx

This code signifies a break in the pisiform bone, one of the small carpal bones in the wrist, where the bone fragments are no longer in their normal alignment. The fracture is located in an unspecified wrist and is an open fracture, meaning the skin and soft tissues have been compromised, exposing the bone. This code is used for the initial treatment of such an injury.

This code is appropriate for documenting the initial encounter for a patient presenting with an open, displaced fracture of the pisiform bone, where the specific wrist (left or right) is not documented. This would typically be used in emergency department settings or during the initial hospitalization for surgical repair or definitive management of the open fracture.

• Ensure documentation clearly specifies "displaced" and "open fracture" of the pisiform.
• If the laterality (left or right wrist) is known, a more specific code should be used.
• This "initial encounter" code is only for the period of active treatment for the fracture. Subsequent care would use a different encounter type.