M85.839
✓ BillableOther specified disorders of bone density and structure, unspecified forearm
Diseases of the musculoskeletal system and connective tissue (M00-M99)
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • diffuse idiopathic skeletal hyperostosis [DISH] (M48.1)
- • osteosclerosis congenita (Q77.4)
- • osteosclerosis fragilitas (generalista) (Q78.2)
- • osteosclerosis myelofibrosis (D75.81)
- • osteogenesis imperfecta (Q78.0)
- • osteopetrosis (Q78.2)
- • osteopoikilosis (Q78.8)
- • polyostotic fibrous dysplasia (Q78.1)
Clinical Description
ICD-10-CM code M85.839 represents other specified disorders of bone density and structure, unspecified forearm. This code falls under the Diseases of the musculoskeletal system and connective tissue (M00-M99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 7-character code at the 6th level of specificity. This is the most specific code available in this subcategory. Coders should note that M85.839 has 8 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code M85.839?
ICD-10-CM code M85.839 is "Other specified disorders of bone density and structure, unspecified forearm". It belongs to the category: Diseases of the musculoskeletal system and connective tissue (M00-M99).
Is M85.839 a billable ICD-10 code?
Yes, M85.839 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with M85.839?
M85.839 has 8 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in M85.83
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)