M85.2
Billable codeHyperostosis of skull
The ICD-10 code for hyperostosis of skull is M85.2.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M85.0Fibrous dysplasia (monostotic)non-billable header
- M85.1Skeletal fluorosisnon-billable header
- 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
- M85.2Hyperostosis of skull
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 7333
Associated MS-DRGs
M85.2 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.