M85.8

ICD-10Non-billable category

Other specified disorders of bone density and structure

Official ICD-10-CM descriptor (FY2026)

Other specified disorders of bone density and structure

M85.8 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Inclusion terms

  • Hyperostosis of bones, except skull
  • Osteosclerosis, acquired

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • diffuse idiopathic skeletal hyperostosis [DISH] (M48.1)
  • osteosclerosis congenita (Q77.4)
  • osteosclerosis fragilitas (generalista) (Q78.2)
  • osteosclerosis myelofibrosis (D75.81)

ICD-10-CM FY2026 defines 10 codes beneath M85.8. See the ICD-10-CM index for what this site publishes.

Related codes in M85

Where this code sits

Parent code
M85

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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