2020

  1. ICD-10-CM Codes
    2. ›
  2. M00-M99 Diseases of the musculoskeletal system and connective tissue
    3. ›
  3. M65-M67 Disorders of synovium and tendon
    4. ›
  4. M66- Spontaneous rupture of synovium and tendon
    5. ›
  5. 2020 ICD-10-CM Diagnosis Code M66.0

2020 ICD-10-CM Diagnosis Code M66.0

Rupture of popliteal cyst

    2016 2017 2018 2019 2020 Billable/Specific Code
  • M66.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM M66.0 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M66.0 - other international versions of ICD-10 M66.0 may differ.
The following code(s) above M66.0 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 M66.0:
  • M00-M99
    2020 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 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
  • Rupture of bilateral popliteal cyst
  • Rupture of bilateral popliteal cysts
  • Rupture of left popliteal cyst
  • Rupture of popliteal cyst of left knee region
  • Rupture of popliteal cyst of right knee region
  • Rupture of popliteal space synovial cyst
  • Rupture of right popliteal cyst
ICD-10-CM M66.0 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 557 Tendonitis, myositis and bursitis with mcc
  • 558 Tendonitis, myositis and bursitis without mcc

Convert M66.0 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
Code annotations containing back-references to M66.0:
  • Type 1 Excludes: M71.2
    ICD-10-CM Diagnosis Code M71.2

    Synovial cyst of popliteal space [Baker]

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • synovial cyst of popliteal space with rupture (M66.0)
  • Type 2 Excludes: M66.1
    ICD-10-CM Diagnosis Code M66.1

    Rupture of synovium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Rupture of synovial cyst
    Type 2 Excludes
    • rupture of popliteal cyst (M66.0)

Diagnosis Index entries containing back-references to M66.0:
  • Cyst (colloid) (mucous) (simple) (retention)
    • Baker's M71.2-
      ICD-10-CM Diagnosis Code M71.2-

      Synovial cyst of popliteal space [Baker]

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Type 1 Excludes
      • synovial cyst of popliteal space with rupture (M66.0)
      • ruptured M66.0

ICD-10-CM Codes Adjacent To M66.0
M65.862 Other synovitis and tenosynovitis, left lower leg
M65.869 Other synovitis and tenosynovitis, unspecified lower leg
M65.87 Other synovitis and tenosynovitis, ankle and foot
M65.871 Other synovitis and tenosynovitis, right ankle and foot
M65.872 Other synovitis and tenosynovitis, left ankle and foot
M65.879 Other synovitis and tenosynovitis, unspecified ankle and foot
M65.88 …… other site
M65.89 …… multiple sites
M65.9 Synovitis and tenosynovitis, unspecified
M66 Spontaneous rupture of synovium and tendon
M66.0 Rupture of popliteal cyst
M66.1 Rupture of synovium
M66.10 …… unspecified joint
M66.11 Rupture of synovium, shoulder
M66.111 Rupture of synovium, right shoulder
M66.112 Rupture of synovium, left shoulder
M66.119 Rupture of synovium, unspecified shoulder
M66.12 Rupture of synovium, elbow
M66.121 Rupture of synovium, right elbow
M66.122 Rupture of synovium, left elbow
M66.129 Rupture of synovium, unspecified elbow

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

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