Is M85.0 a billable code?
No. M85.0 is a header code that groups 24 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
M85.0: Fibrous dysplasia (monostotic)
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
M85.0 groups related diagnoses under fibrous dysplasia (monostotic). It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under M85.0
- M85.00Fibrous dysplasia (monostotic), unspecified site
- M85.011Fibrous dysplasia (monostotic), right shoulder
- M85.012Fibrous dysplasia (monostotic), left shoulder
- M85.019Fibrous dysplasia (monostotic), unspecified shoulder
- M85.021Fibrous dysplasia (monostotic), right upper arm
- M85.022Fibrous dysplasia (monostotic), left upper arm
- M85.029Fibrous dysplasia (monostotic), unspecified upper arm
- M85.031Fibrous dysplasia (monostotic), right forearm
- M85.032Fibrous dysplasia (monostotic), left forearm
- M85.039Fibrous dysplasia (monostotic), unspecified forearm
- M85.041Fibrous dysplasia (monostotic), right hand
- M85.042Fibrous dysplasia (monostotic), left hand
- M85.049Fibrous dysplasia (monostotic), unspecified hand
- M85.051Fibrous dysplasia (monostotic), right thigh
- M85.052Fibrous dysplasia (monostotic), left thigh
- M85.059Fibrous dysplasia (monostotic), unspecified thigh
- M85.061Fibrous dysplasia (monostotic), right lower leg
- M85.062Fibrous dysplasia (monostotic), left lower leg
- M85.069Fibrous dysplasia (monostotic), unspecified lower leg
- M85.071Fibrous dysplasia (monostotic), right ankle and foot
- M85.072Fibrous dysplasia (monostotic), left ankle and foot
- M85.079Fibrous dysplasia (monostotic), unspecified ankle and foot
- M85.08Fibrous dysplasia (monostotic), other site
- M85.09Fibrous dysplasia (monostotic), multiple sites
Other codes in M85 Other disorders of bone density and structure
M85.0 questions
What does M85.0 mean?
M85.0 is the ICD-10-CM code for Fibrous dysplasia (monostotic). It is in chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.