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M85.8

Non-billable

Other specified disorders of bone density and structure

M85.8 is the ICD-10-CM code for Other specified disorders of bone density and structure. It is a non-billable category code — use a more specific child code such as M85.80 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M85
Subcodes
10
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

Includes

  • •Hyperostosis of bones, except skull
  • •Osteosclerosis, acquired

Excludes1 — not coded here

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

Frequently asked questions

What is ICD-10 code M85.8?
M85.8 is the ICD-10-CM code for "Other specified disorders of bone density and structure". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M85.8 a billable code?
No — M85.8 is a non-billable header code. Use a more specific child code (such as M85.80) for billing.
What are the subcodes of M85.8?
M85.8 has 10 more specific child codes, including M85.80, M85.81, M85.82.
What is excluded from M85.8?
Excludes1 (not coded here): diffuse idiopathic skeletal hyperostosis [DISH] (M48.1); osteosclerosis congenita (Q77.4); osteosclerosis fragilitas (generalista) (Q78.2); osteosclerosis myelofibrosis (D75.81).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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