M85.85 – Other specified disorders of bone density and structure, thigh

ICD-10-CM 2027 diagnosis code · Disorders of bone density and structure

Non-billable header

ICD-10-CM code M85.85
Code
M85.85 (claims format: M8585)
Description
Other specified disorders of bone density and structure, thigh
Short description
Oth disrd of bone density and structure, thigh
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block
M80-M85 Disorders of bone density and structure
Parent codes
M85 › M85.8

Billable codes under M85.85

M85.85 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M85 – Other disorders of bone density and structure

Excludes1 (not coded here):
  • osteogenesis imperfecta (Q78.0)
  • osteopetrosis (Q78.2)
  • osteopoikilosis (Q78.8)
  • polyostotic fibrous dysplasia (Q78.1)

M85.8 – Other specified disorders of bone density and structure

Applicable to:
  • 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)

Index terms for M85.85

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in M85.8

Frequently asked questions

What is ICD-10 code M85.85?

M85.85 is the ICD-10-CM code for other specified disorders of bone density and structure, thigh, in the block M80-M85 (Disorders of bone density and structure).

Is M85.85 a billable code?

No. M85.85 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M85.85 belong to?

It belongs to category M85 – Other disorders of bone density and structure.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.