--- M23.000 Cystic meniscus, unspecified lateral meniscus, right knee

--- M23.001 Cystic meniscus, unspecified lateral meniscus, left knee

--- M23.002 Cystic meniscus, unspecified lateral meniscus, unspecified knee

--- M23.003 Cystic meniscus, unspecified medial meniscus, right knee

--- M23.004 Cystic meniscus, unspecified medial meniscus, left knee

--- M23.005 Cystic meniscus, unspecified medial meniscus, unspecified knee

--- M23.006 Cystic meniscus, unspecified meniscus, right knee

--- M23.007 Cystic meniscus, unspecified meniscus, left knee

--- M23.009 Cystic meniscus, unspecified meniscus, unspecified knee