2021

  1. ICD-10-CM Codes
    2. ›
  2. M00-M99 Diseases of the musculoskeletal system and connective tissue
    3. ›
  3. M80-M85 Disorders of bone density and structure
    4. ›
  4. M85- Other disorders of bone density and structure
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code M85.8

2021 ICD-10-CM Diagnosis Code M85.8

Other specified disorders of bone density and structure

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • M85.8 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 M85.8 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of M85.8 - other international versions of ICD-10 M85.8 may differ.
Applicable To
  • Hyperostosis of bones, except skull
  • Osteosclerosis, acquired
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as M85.8. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • diffuse idiopathic skeletal hyperostosis [DISH] (
    ICD-10-CM Diagnosis Code M48.1

    Ankylosing hyperostosis [Forestier]

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Diffuse idiopathic skeletal hyperostosis [DISH]
    M48.1
    )
  • osteosclerosis congenita (
    ICD-10-CM Diagnosis Code Q77.4

    Achondroplasia

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Hypochondroplasia
    • Osteosclerosis congenita
    Q77.4
    )
  • osteosclerosis fragilitas (generalista) (
    ICD-10-CM Diagnosis Code Q78.2

    Osteopetrosis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Albers-Schönberg syndrome
    • Osteosclerosis NOS
    Q78.2
    )
  • osteosclerosis myelofibrosis (
    ICD-10-CM Diagnosis Code D75.81

    Myelofibrosis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
    Applicable To
    • Myelofibrosis NOS
    • Secondary myelofibrosis NOS
    Code First
    • the underlying disorder, such as:
    • malignant neoplasm of breast (C50.-)
    Type 1 Excludes
    • acute myelofibrosis (C94.4-)
    • idiopathic myelofibrosis (D47.1)
    • leukoerythroblastic anemia (D61.82)
    • myelofibrosis with myeloid metaplasia (D47.4)
    • myelophthisic anemia (D61.82)
    • myelophthisis (D61.82)
    • primary myelofibrosis (D47.1)
    Use Additional
    • code, if applicable, for associated therapy-related myelodysplastic syndrome (D46.-)
    D75.81
    )
The following code(s) above M85.8 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 M85.8:
  • 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
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 M85.8:
  • Borderline
    • osteopenia M85.8-
  • Disorder (of) - see also Disease
    • bone M89.9
      ICD-10-CM Diagnosis Code M89.9

      Disorder of bone, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • Osteopenia M85.8-
    • borderline M85.8-
  • Osteosclerosis Q78.2
    ICD-10-CM Diagnosis Code Q78.2

    Osteopetrosis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Albers-Schönberg syndrome
    • Osteosclerosis NOS
    • acquired M85.8-

ICD-10-CM Codes Adjacent To M85.8
M85.66 Other cyst of bone, lower leg
M85.661 Other cyst of bone, right lower leg
M85.662 Other cyst of bone, left lower leg
M85.669 Other cyst of bone, unspecified lower leg
M85.67 Other cyst of bone, ankle and foot
M85.671 Other cyst of bone, right ankle and foot
M85.672 Other cyst of bone, left ankle and foot
M85.679 Other cyst of bone, unspecified ankle and foot
M85.68 …… other site
M85.69 …… multiple sites
M85.8 Other specified disorders of bone density and structure
M85.80 …… unspecified site
M85.81 Other specified disorders of bone density and structure, shoulder
M85.811 Other specified disorders of bone density and structure, right shoulder
M85.812 Other specified disorders of bone density and structure, left shoulder
M85.819 Other specified disorders of bone density and structure, unspecified shoulder
M85.82 Other specified disorders of bone density and structure, upper arm
M85.821 Other specified disorders of bone density and structure, right upper arm
M85.822 Other specified disorders of bone density and structure, left upper arm
M85.829 Other specified disorders of bone density and structure, unspecified upper arm
M85.83 Other specified disorders of bone density and structure, forearm

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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