All ICD10 Codes

M85.0

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Fibrous dysplasia (monostotic)

Use a more specific code (3 billable, 7 non-billable)
M85.00Fibrous dysplasia (monostotic), unspecified siteM85.01Fibrous dysplasia (monostotic), shoulderhas subcodesM85.02Fibrous dysplasia (monostotic), upper armhas subcodesM85.03Fibrous dysplasia (monostotic), forearmhas subcodesM85.04Fibrous dysplasia (monostotic), handhas subcodesM85.05Fibrous dysplasia (monostotic), thighhas subcodesM85.06Fibrous dysplasia (monostotic), lower leghas subcodesM85.07Fibrous dysplasia (monostotic), ankle and foothas subcodesM85.08Fibrous dysplasia (monostotic), other siteM85.09Fibrous dysplasia (monostotic), multiple sites
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)
  • fibrous dysplasia of jaw (M27.8)
General instructions are available for the parent sections:
View CH13 NotesView M85 Notes

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M80-M85Disorders of bone density and structure (M80-M85)
M85Other disorders of bone density and structure
M85.0Fibrous dysplasia (monostotic)Not billable
M85.00Fibrous dysplasia (monostotic), unspecified siteBillable
M85.01Fibrous dysplasia (monostotic), shoulderSubcodes
M85.02Fibrous dysplasia (monostotic), upper armSubcodes
M85.03Fibrous dysplasia (monostotic), forearmSubcodes
M85.04Fibrous dysplasia (monostotic), handSubcodes
M85.05Fibrous dysplasia (monostotic), thighSubcodes
M85.06Fibrous dysplasia (monostotic), lower legSubcodes
M85.07Fibrous dysplasia (monostotic), ankle and footSubcodes
M85.08Fibrous dysplasia (monostotic), other siteBillable
M85.09Fibrous dysplasia (monostotic), multiple sitesBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M85.0:

categoryM85
Other disorders of bone density and structure
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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