Cystic meniscus, posterior horn of lat mensc, left knee

This code signifies the presence of a cystic lesion within the posterior horn of the lateral meniscus in the left knee. These cysts are typically benign, fluid-filled sacs that develop adjacent to or within the meniscal tissue, often associated with meniscal tears or degeneration.

This code is appropriate when diagnostic imaging (e.g., MRI) confirms a meniscal cyst specifically located in the posterior horn of the left lateral meniscus. Documentation should clearly specify the knee (left), the meniscal component (lateral), and the horn (posterior) affected by the cyst.

• Ensure documentation specifies "left knee" and "posterior horn of lateral meniscus" to support this specific code.
• Do not use this code for meniscal cysts in other locations or for meniscal tears without an associated cyst.
• Consider co-reporting with codes for any underlying meniscal tears if documented and clinically relevant.