M85.10 – Skeletal fluorosis, unspecified site

ICD-10-CM 2027 diagnosis code · Disorders of bone density and structure

Billable code

ICD-10-CM code M85.10

Code: M85.10 (claims format: M8510)
Description: Skeletal fluorosis, unspecified site
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M80-M85 Disorders of bone density and structure
Parent codes: M85 › M85.1

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M85 – Other disorders of bone density and structure

Excludes1 (not coded here):

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

Index terms for M85.10

Entries in the ICD-10-CM alphabetic index that lead to this code:

Fluorosis, skeletal

Related codes in M85.1

M85.11 – Skeletal fluorosis, shoulderHeader
M85.12 – Skeletal fluorosis, upper armHeader
M85.13 – Skeletal fluorosis, forearmHeader
M85.14 – Skeletal fluorosis, handHeader
M85.15 – Skeletal fluorosis, thighHeader
M85.16 – Skeletal fluorosis, lower legHeader
M85.17 – Skeletal fluorosis, ankle and footHeader
M85.18 – Skeletal fluorosis, other siteBillable
M85.19 – Skeletal fluorosis, multiple sitesBillable

Frequently asked questions

What is ICD-10 code M85.10?

M85.10 is the ICD-10-CM code for skeletal fluorosis, unspecified site, in the block M80-M85 (Disorders of bone density and structure).

Is M85.10 a billable code?

Yes. M85.10 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M85.10 belong to?

It belongs to category M85 – Other disorders of bone density and structure.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.