2021 ICD-10-CM Diagnosis Code M85.09

Fibrous dysplasia (monostotic), multiple sites

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • M85.09 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 M85.09 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of M85.09 - other international versions of ICD-10 M85.09 may differ.
The following code(s) above M85.09 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 M85.09:
  • 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
  • M85
    ICD-10-CM Diagnosis Code M85

    Other disorders of bone density and structure

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • osteogenesis imperfecta (Q78.0)
    • osteopetrosis (Q78.2)
    • osteopoikilosis (Q78.8)
    • polyostotic fibrous dysplasia (Q78.1)
    Other disorders of bone density and structure
  • M85.0
    ICD-10-CM Diagnosis Code M85.0

    Fibrous dysplasia (monostotic)

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • fibrous dysplasia of jaw (M27.8)
    Fibrous dysplasia (monostotic)
Approximate Synonyms
  • Monostotic fibrous dysplasia of multiple sites
Clinical Information
  • Fibrous dysplasia of bone involving only one bone.
ICD-10-CM M85.09 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 553 Bone diseases and arthropathies with mcc
  • 554 Bone diseases and arthropathies without mcc

Convert M85.09 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

Diagnosis Index entries containing back-references to M85.09:
  • Dysplasia - see also Anomaly
    • fibrous
      • bone NEC (monostotic) M85.00
        ICD-10-CM Diagnosis Code M85.00

        Fibrous dysplasia (monostotic), unspecified site

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        • multiple site M85.09

ICD-10-CM Codes Adjacent To M85.09
M85.059 Fibrous dysplasia (monostotic), unspecified thigh
M85.06 Fibrous dysplasia (monostotic), lower leg
M85.061 Fibrous dysplasia (monostotic), right lower leg
M85.062 Fibrous dysplasia (monostotic), left lower leg
M85.069 Fibrous dysplasia (monostotic), unspecified lower leg
M85.07 Fibrous dysplasia (monostotic), ankle and foot
M85.071 Fibrous dysplasia (monostotic), right ankle and foot
M85.072 Fibrous dysplasia (monostotic), left ankle and foot
M85.079 Fibrous dysplasia (monostotic), unspecified ankle and foot
M85.08 …… other site
M85.09 …… multiple sites
M85.1 Skeletal fluorosis
M85.10 …… unspecified site
M85.11 Skeletal fluorosis, shoulder
M85.111 Skeletal fluorosis, right shoulder
M85.112 Skeletal fluorosis, left shoulder
M85.119 Skeletal fluorosis, unspecified shoulder
M85.12 Skeletal fluorosis, upper arm
M85.121 Skeletal fluorosis, right upper arm
M85.122 Skeletal fluorosis, left upper arm
M85.129 Skeletal fluorosis, unspecified upper arm

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