M23.21

Non-Billable

Derangement of anterior horn of medial meniscus due to old tear or injury

M23.21 should not be used for reimbursement purposes as there are multiple sub-diagnoses that fall under this code. Please refer to the sub-diagnoses below.

Related Diagnoses

  • M23.211Derangement of anterior horn of medial meniscus due to old tear or injury, right knee
  • M23.212Derangement of anterior horn of medial meniscus due to old tear or injury, left knee
  • M23.219Derangement of anterior horn of medial meniscus due to old tear or injury, unspecified knee
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