2021 ICD-10-CM Diagnosis Code M22

Disorder of patella

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • M22 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM M22 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of M22 - other international versions of ICD-10 M22 may differ.
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (M22) and the excluded code together.
  • traumatic dislocation of patella (
    ICD-10-CM Diagnosis Code S83.0

    Subluxation and dislocation of patella

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    S83.0-
    )
The following code(s) above M22 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to M22:
  • M00-M99
    2021 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the musculoskeletal system and connective tissue
  • M20-M25
    2021 ICD-10-CM Range M20-M25

    Other joint disorders

    Type 2 Excludes
    Other joint disorders
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To M22
M21.942 …… left hand
M21.949 …… unspecified hand
M21.95 Unspecified acquired deformity of thigh
M21.951 Unspecified acquired deformity of right thigh
M21.952 Unspecified acquired deformity of left thigh
M21.959 Unspecified acquired deformity of unspecified thigh
M21.96 Unspecified acquired deformity of lower leg
M21.961 Unspecified acquired deformity of right lower leg
M21.962 Unspecified acquired deformity of left lower leg
M21.969 Unspecified acquired deformity of unspecified lower leg
M22 Disorder of patella
M22.0 Recurrent dislocation of patella
M22.00 …… unspecified knee
M22.01 …… right knee
M22.02 …… left knee
M22.1 Recurrent subluxation of patella
M22.10 …… unspecified knee
M22.11 …… right knee
M22.12 …… left knee
M22.2 Patellofemoral disorders
M22.2X Patellofemoral disorders

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.