M85

Non-billable

Other disorders of bone density and structure

M85 is the ICD-10-CM code for Other disorders of bone density and structure. It is a non-billable category code — use a more specific child code such as M85.0 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Subcodes
9
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

Excludes1 — not coded here

  • osteogenesis imperfecta (Q78.0)
  • osteopetrosis (Q78.2)
  • osteopoikilosis (Q78.8)
  • polyostotic fibrous dysplasia (Q78.1)

Frequently asked questions

What is ICD-10 code M85?
M85 is the ICD-10-CM code for "Other disorders of bone density and structure". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M85 a billable code?
No — M85 is a non-billable header code. Use a more specific child code (such as M85.0) for billing.
What are the subcodes of M85?
M85 has 9 more specific child codes, including M85.0, M85.1, M85.2.
What is excluded from M85?
Excludes1 (not coded here): osteogenesis imperfecta (Q78.0); osteopetrosis (Q78.2); osteopoikilosis (Q78.8); polyostotic fibrous dysplasia (Q78.1).

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

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