M23.00

M23.00: Cystic meniscus, unspecified meniscus

Non-billable headerICD-10-CM

M23.00 is a non-billable header ICD-10-CM code for cystic meniscus, unspecified meniscus. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Cystic meniscus, unspecified lateral meniscus
Cystic meniscus, unspecified medial meniscus

Excludes1 inherited from the categories above M23.00

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 M23.00

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.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead M23.00

9 child codes. Green means billable.