M85.0
Header — not billableFibrous dysplasia (monostotic)
The ICD-10 code for fibrous dysplasia (monostotic) is M85.0.
M85.0 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 10 more specific codes below.
Clinical notes
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
- fibrous dysplasia of jaw (M27.8)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under M85.0
- M85.00Fibrous dysplasia (monostotic), unspecified site
- M85.01Fibrous dysplasia (monostotic), shouldernon-billable header
- M85.02Fibrous dysplasia (monostotic), upper armnon-billable header
- M85.03Fibrous dysplasia (monostotic), forearmnon-billable header
- M85.04Fibrous dysplasia (monostotic), handnon-billable header
- M85.05Fibrous dysplasia (monostotic), thighnon-billable header
- M85.06Fibrous dysplasia (monostotic), lower legnon-billable header
- M85.07Fibrous dysplasia (monostotic), ankle and footnon-billable header
- M85.08Fibrous dysplasia (monostotic), other site
- M85.09Fibrous dysplasia (monostotic), multiple sites
Related codes in this category
- M85.1Skeletal fluorosisnon-billable header
- M85.2Hyperostosis of skull
- M85.3Osteitis condensansnon-billable header
- M85.4Solitary bone cystnon-billable header
- M85.5Aneurysmal bone cystnon-billable header
- M85.6Other cyst of bonenon-billable header
- M85.8Other specified disorders of bone density and structurenon-billable header
- M85.9Disorder of bone density and structure, unspecified
- M85.0Fibrous dysplasia (monostotic)non-billable header