2021 ICD-10-CM Diagnosis Code M66.871

Spontaneous rupture of other tendons, right ankle and foot

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • M66.871 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 M66.871 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of M66.871 - other international versions of ICD-10 M66.871 may differ.
The following code(s) above M66.871 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 M66.871:
  • 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
  • M66
    ICD-10-CM Diagnosis Code M66

    Spontaneous rupture of synovium and tendon

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Includes
    • rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength
    Type 2 Excludes
    • rotator cuff syndrome (M75.1-)
    • rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region
    Spontaneous rupture of synovium and tendon
Approximate Synonyms
  • Non-traumatic rupture of right achilles tendon
  • Nontraumatic rupture of bilateral achilles tendons
  • Nontraumatic rupture of right achilles tendon
ICD-10-CM M66.871 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 557 Tendonitis, myositis and bursitis with mcc
  • 558 Tendonitis, myositis and bursitis without mcc

Convert M66.871 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 M66.871
M66.849 Spontaneous rupture of other tendons, unspecified hand
M66.85 Spontaneous rupture of other tendons, thigh
M66.851 Spontaneous rupture of other tendons, right thigh
M66.852 Spontaneous rupture of other tendons, left thigh
M66.859 Spontaneous rupture of other tendons, unspecified thigh
M66.86 Spontaneous rupture of other tendons, lower leg
M66.861 Spontaneous rupture of other tendons, right lower leg
M66.862 Spontaneous rupture of other tendons, left lower leg
M66.869 Spontaneous rupture of other tendons, unspecified lower leg
M66.87 Spontaneous rupture of other tendons, ankle and foot
M66.871 Spontaneous rupture of other tendons, right ankle and foot
M66.872 Spontaneous rupture of other tendons, left ankle and foot
M66.879 Spontaneous rupture of other tendons, unspecified ankle and foot
M66.88 …… other sites
M66.89 …… multiple sites
M66.9 Spontaneous rupture of unspecified tendon
M67 Other disorders of synovium and tendon
M67.0 Short Achilles tendon (acquired)
M67.00 …… unspecified ankle
M67.01 …… right ankle
M67.02 …… left ankle

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