Other specified disorders of bone density and structure, ankle and foot

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

M85.871 Other specified disorders of bone density and structure, right ankle and foot
M85.872 Other specified disorders of bone density and structure, left ankle and foot
M85.879 Other specified disorders of bone density and structure, unspecified ankle and foot

What has happened to this code

Every change the publisher made, from 2012 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.

FY2012 Added to the draft code set draft Other specified disorders of bone density and structure, ankle and foot

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
Density > increased, 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 > specified type NEC > foot
Disorder > bone > density and structure > specified type NEC > ankle

Codes in the same group

Code	Description	Status
M85.80	Other specified disorders of bone density and structure, unspecified site	Valid
M85.81	Other specified disorders of bone density and structure, shoulder	Not billable
M85.82	Other specified disorders of bone density and structure, upper arm	Not billable
M85.83	Other specified disorders of bone density and structure, forearm	Not billable
M85.84	Other specified disorders of bone density and structure, hand	Not billable
M85.85	Other specified disorders of bone density and structure, thigh	Not billable
M85.86	Other specified disorders of bone density and structure, lower leg	Not billable
M85.88	Other specified disorders of bone density and structure, other site	Valid
M85.89	Other specified disorders of bone density and structure, multiple sites	Valid