M85.4
Header — not billableSolitary bone cyst
The ICD-10 code for solitary bone cyst is M85.4.
M85.4 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
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.
- solitary cyst of jaw (M27.4)
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 M85.4
- M85.40Solitary bone cyst, unspecified site
- M85.41Solitary bone cyst, shouldernon-billable header
- M85.42Solitary bone cyst, humerusnon-billable header
- M85.43Solitary bone cyst, ulna and radiusnon-billable header
- M85.44Solitary bone cyst, handnon-billable header
- M85.45Solitary bone cyst, pelvisnon-billable header
- M85.46Solitary bone cyst, tibia and fibulanon-billable header
- M85.47Solitary bone cyst, ankle and footnon-billable header
- M85.48Solitary bone cyst, other site
Related codes in this category
- M85.0Fibrous dysplasia (monostotic)non-billable header
- M85.1Skeletal fluorosisnon-billable header
- M85.2Hyperostosis of skull
- M85.3Osteitis condensansnon-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
- M85.4Solitary bone cystnon-billable header