M85.2

M85.2: Hyperostosis of skull

Billable / specific codeICD-10-CM

M85.2 is a billable, specific ICD-10-CM code for hyperostosis of skull. It is valid for submission on a claim.

Check M85.2 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above M85.2

A category’s note binds every code beneath it.

Written on M85: Other disorders of bone density and structure

osteogenesis imperfecta (Q78.0)
osteopetrosis (Q78.2)
osteopoikilosis (Q78.8)
polyostotic fibrous dysplasia (Q78.1)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

M85.2 is named in 8 Medicare coverage policies: 1 listing it as supporting medical necessity, and 7 listing it as NOT covered. Which one applies depends on your Medicare contractor.

A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
A58883Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered

Alphabetic index entries that lead here

Buchem's syndrome(hyperostosis corticalis)
Craniopathy, metabolic
Morel syndrome(-Stewart)(-Morgagni)
Morel-Moore syndrome
Morgagni-Stewart-Morel syndrome
Stewart-Morel syndrome
Van Buchem's syndrome
Disease, diseased›Morgagni's(syndrome) (hyperostosis frontalis interna)
Hyperostosis›cortical(skull)
Hyperostosis›frontal, internal of skull
Hyperostosis›interna frontalis
Hyperostosis›skull

Code history

Unchanged in every release from FY2024 to FY2027.