2021 ICD-10-CM Diagnosis Code M20.5X9

Other deformities of toe(s) (acquired), unspecified foot

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • M20.5X9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM M20.5X9 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of M20.5X9 - other international versions of ICD-10 M20.5X9 may differ.
The following code(s) above M20.5X9 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 M20.5X9:
  • 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
  • M20
    ICD-10-CM Diagnosis Code M20

    Acquired deformities of fingers and toes

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • acquired absence of fingers and toes (Z89.-)
    • congenital absence of fingers and toes (Q71.3-, Q72.3-)
    • congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-)
    Acquired deformities of fingers and toes
Approximate Synonyms
  • Acquired claw toes
  • Acquired hallux rigidus
  • Acquired mallet toe
  • Claw toe, acquired
  • Hallux rigidus, acquired
  • Mallet toe, acquired
ICD-10-CM M20.5X9 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 564 Other musculoskeletal system and connective tissue diagnoses with mcc
  • 565 Other musculoskeletal system and connective tissue diagnoses with cc
  • 566 Other musculoskeletal system and connective tissue diagnoses without cc/mcc

Convert M20.5X9 to ICD-9-CM

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 M20.5X9
M20.31 …… right foot
M20.32 …… left foot
M20.4 Other hammer toe(s) (acquired)
M20.40 …… unspecified foot
M20.41 …… right foot
M20.42 …… left foot
M20.5 Other deformities of toe(s) (acquired)
M20.5X Other deformities of toe(s) (acquired)
M20.5X1 …… right foot
M20.5X2 …… left foot
M20.5X9 …… unspecified foot
M20.6 Acquired deformities of toe(s), unspecified
M20.60 …… unspecified foot
M20.61 …… right foot
M20.62 …… left foot
M21 Other acquired deformities of limbs
M21.0 Valgus deformity, not elsewhere classified
M21.00 …… unspecified site
M21.02 Valgus deformity, not elsewhere classified, elbow
M21.021 Valgus deformity, not elsewhere classified, right elbow
M21.022 Valgus deformity, not elsewhere classified, left elbow

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