M85.0
Non-billableFibrous dysplasia (monostotic)
Fibrous dysplasia (monostotic)
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •arthropathic psoriasisL40.5
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •compartment syndrome (traumatic)A-)T79
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •fibrous dysplasia of jawM27.8
Child Codes (10)
M85.00Fibrous dysplasia (monostotic), unspecified site
M85.01Fibrous dysplasia (monostotic), shoulder
M85.02Fibrous dysplasia (monostotic), upper arm
M85.03Fibrous dysplasia (monostotic), forearm
M85.04Fibrous dysplasia (monostotic), hand
M85.05Fibrous dysplasia (monostotic), thigh
M85.06Fibrous dysplasia (monostotic), lower leg
M85.07Fibrous dysplasia (monostotic), ankle and foot
M85.08Fibrous dysplasia (monostotic), other site
M85.09Fibrous dysplasia (monostotic), multiple sites
Related Codes(8)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(14)
UMLS
- Dysplasia, Monostotic FibrousC0016064
- Dysplasias, Monostotic FibrousC0016064
- Fibrous Dysplasia, MonostoticC0016064
- Fibrous Dysplasias, MonostoticC0016064
- Fibrous dysplasia (monostotic)C0016064
- Fibrous dysplasia (monostotic), unspecified siteC0016064
- Localised osteitis fibrosaC0016064
- Localized osteitis fibrosaC0016064
- Monostotic Fibrous DysplasiaC0016064
- Monostotic Fibrous Dysplasia of BoneC0016064
- Monostotic Fibrous DysplasiasC0016064
- Monostotic fibrous dysplasiaC0016064
- Monostotic fibrous dysplasia (disorder)C0016064
- Osteitis fibrosa circumscriptaC0016064
Frequently Asked Questions
What is the ICD-10 code for fibrous dysplasia (monostotic)?
The ICD-10-CM code for fibrous dysplasia (monostotic) is M85.0. The full clinical description is "Fibrous dysplasia (monostotic)". M85.0 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code M85.0 mean?
ICD-10-CM code M85.0 represents “Fibrous dysplasia (monostotic)”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a non-billable header code. Use a more specific child code for billing purposes.
Is M85.0 a billable code?
No, M85.0 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under M85.0.
What chapter is M85.0 in?
M85.0 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M85.0?
M85.0 has Excludes1 notes indicating codes that cannot be used together with it, including: osteogenesis imperfecta (Q78.0); osteopetrosis (Q78.2); osteopoikilosis (Q78.8); and 1 more.
What are the subcategories under M85.0?
M85.0 has 10 child codes, including: M85.00 (Fibrous dysplasia (monostotic), unspecified site), M85.01 (Fibrous dysplasia (monostotic), shoulder), M85.02 (Fibrous dysplasia (monostotic), upper arm), M85.03 (Fibrous dysplasia (monostotic), forearm), and 6 more.
What are the UMLS CUIs for M85.0?
M85.0 is linked to 1 UMLS Concept Unique Identifier: C0016064. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M85.0 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like fibrous dysplasia (monostotic) affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of M85.0?
M85.0 maps to the ICD-11 code: FB80.0 (Fibrous dysplasia of bone).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.