M85.08 – Fibrous dysplasia (monostotic), other site
ICD-10-CM 2027 diagnosis code · Disorders of bone density and structure
ICD-10-CM code
M85.08
- Code
M85.08(claims format:M8508)- Description
- Fibrous dysplasia (monostotic), other site
- Billable
- Yes – valid for HIPAA-covered transactions
- 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 › M85.0
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):
M85.0 – Fibrous dysplasia (monostotic)
Excludes2 (not included here):
- fibrous dysplasia of jaw (M27.8)
Index terms for M85.08
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in M85.0
- M85.00 – Fibrous dysplasia (monostotic), unspecified siteBillable
- M85.01 – Fibrous dysplasia (monostotic), shoulderHeader
- M85.02 – Fibrous dysplasia (monostotic), upper armHeader
- M85.03 – Fibrous dysplasia (monostotic), forearmHeader
- M85.04 – Fibrous dysplasia (monostotic), handHeader
- M85.05 – Fibrous dysplasia (monostotic), thighHeader
- M85.06 – Fibrous dysplasia (monostotic), lower legHeader
- M85.07 – Fibrous dysplasia (monostotic), ankle and footHeader
- M85.09 – Fibrous dysplasia (monostotic), multiple sitesBillable
Frequently asked questions
What is ICD-10 code M85.08?
M85.08 is the ICD-10-CM code for fibrous dysplasia (monostotic), other site, in the block M80-M85 (Disorders of bone density and structure).
Is M85.08 a billable code?
Yes. M85.08 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M85.08 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.