M85 – Other disorders of bone density and structure
ICD-10-CM 2027 diagnosis code · Disorders of bone density and structure
ICD-10-CM code
M85
- Code
M85(claims format:M85)- Description
- Other disorders of bone density and structure
- Billable
- No – use a more specific code below
- 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
Billable codes under M85
M85 is a header code and cannot be used on claims. Choose the most specific code:
- M85.0 – Fibrous dysplasia (monostotic)Header (more codes below)
- M85.1 – Skeletal fluorosisHeader (more codes below)
- M85.2 – Hyperostosis of skullBillable
- M85.3 – Osteitis condensansHeader (more codes below)
- M85.4 – Solitary bone cystHeader (more codes below)
- M85.5 – Aneurysmal bone cystHeader (more codes below)
- M85.6 – Other cyst of boneHeader (more codes below)
- M85.8 – Other specified disorders of bone density and structureHeader (more codes below)
- M85.9 – Disorder of bone density and structure, unspecifiedBillable
Notes for M85
Frequently asked questions
What is ICD-10 code M85?
M85 is the ICD-10-CM code for other disorders of bone density and structure, in the block M80-M85 (Disorders of bone density and structure).
Is M85 a billable code?
No. M85 is a header code with more specific child codes; report one of the billable codes listed above.
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.