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M23.005

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

Billable / specific codeICD-10-CMunspecified

M23.005 is a billable, specific ICD-10-CM code for cystic meniscus, unspecified medial meniscus, unspecified knee. It is valid for submission on a claim.

Check M23.005 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above M23.005

A category’s note binds every code beneath it.

Written on M23: Internal derangement of knee

  • ankylosis (M24.66)
  • deformity of knee (M21.-)
  • osteochondritis dissecans (M93.2)

Excludes2 inherited from the categories above M23.005

Not part of this code, but both may be coded when both are present.

Written on M23: Internal derangement of knee

  • current injury - see injury of knee and lower leg (S80-S89)
  • recurrent dislocation or subluxation of joints (M24.4)
  • recurrent dislocation or subluxation of patella (M22.0-M22.1)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

M23.005 is named in 7 Medicare coverage policies: 0 listing it as supporting medical necessity, and 7 listing it as NOT covered. Which one applies depends on your Medicare contractor.

  • A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A58883Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered

Alphabetic index entries that lead here

  • Derangement›knee›meniscus›cystic›medial

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under M23.00

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.