M85
Header — not billableOther disorders of bone density and structure
The ICD-10 code for other disorders of bone density and structure is M85.
M85 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 9 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
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.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under M85
- M85.0Fibrous dysplasia (monostotic)non-billable header
- 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
Related codes in this category
- M80Osteoporosis with current pathological fracturenon-billable header
- M81Osteoporosis without current pathological fracturenon-billable header
- M83Adult osteomalacianon-billable header
- M84Disorder of continuity of bonenon-billable header
- M85Other disorders of bone density and structurenon-billable header