M23.32 - Other meniscus derangements, posterior horn of medial meniscus M23.3 - Other meniscus derangements M23.32 - Other meniscus derangements, posterior horn of medial meniscus
M23.321 - Other meniscus derangements, posterior horn of medial meniscus, right knee M23.322 - Other meniscus derangements, posterior horn of medial meniscus, left knee M23.329 - Other meniscus derangements, posterior horn of medial meniscus, unspecified knee