Nondisp longitud fx unsp patella, init for opn fx type I/2

This code describes a fracture of the kneecap (patella) that runs lengthwise (longitudinal) and where the bone fragments have not shifted out of alignment (nondisplaced). It specifically applies when the fracture is open, meaning the skin has been broken, and is classified as a Type I or Type II open fracture according to the Gustilo-Anderson classification.

Use this code for initial treatment encounters of patients presenting with a newly diagnosed nondisplaced longitudinal patellar fracture that is open. This includes situations where the bone has broken through the skin or there is a wound communicating with the fracture site, but the soft tissue damage is minimal (Type I) or moderate (Type II).

• Ensure documentation specifies "nondisplaced" and "longitudinal" for the patellar fracture.
• Confirm the open nature of the fracture and the Gustilo-Anderson classification (Type I or II) is clearly documented.
• This "B" seventh character indicates an initial encounter for an open fracture; subsequent care would require a different seventh character.