Disorder of bone density and structure, unspecified

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2007 Added to the draft code set draft Disorder of bone density and structure, unspecified

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from M85 Other disorders of bone density and structure

Excludes1 - never coded here

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

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Exostosis
Loss > bone
Hyperostosis
Change > bone
Lesion > bone
Erosion > bone
Melorheostosis
Rarefaction, bone
Disease, diseased > bone
Loss > substance of > bone
Development > arrested > bone
Retardation > endochondral bone growth
Ossification > multiple, eccentric centers
Arrest, arrested > development or growth > bone
Disorder > bone > density and structure

Codes in the same group

Code	Description	Status
M85.0	Fibrous dysplasia (monostotic)	Not billable
M85.1	Skeletal fluorosis	Not billable
M85.2	Hyperostosis of skull	Valid
M85.3	Osteitis condensans	Not billable
M85.4	Solitary bone cyst	Not billable
M85.5	Aneurysmal bone cyst	Not billable
M85.6	Other cyst of bone	Not billable
M85.8	Other specified disorders of bone density and structure	Not billable