ICD-10-CM > M00-M99 > M20-M25 > M23 > M23.2 > M23.24 M23.24 Derangement of anterior horn of lateral meniscus due to old tear or injury Non-Billable/Non-Specific Codes M23.241Derangement of anterior horn of lateral meniscus due to old tear or injury, right kneeM23.242Derangement of anterior horn of lateral meniscus due to old tear or injury, left kneeM23.249Derangement of anterior horn of lateral meniscus due to old tear or injury, unspecified knee