M85 Other disorders of bone density and structure

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Other disorders of bone density and structure is M85 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
M80-M85: Disorders of bone density and structure (M80-M85)
Category M85
226 codes (169 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with M85.
  • osteogenesis imperfecta (Q78.0)
  • osteopetrosis (Q78.2)
  • osteopoikilosis (Q78.8)
  • polyostotic fibrous dysplasia (Q78.1)

Official Coding Guidelines

Osteoporosis without pathological fracture (M81)

Category M81, Osteoporosis without current pathological fracture, is for use for patients with osteoporosis who do not currently have a pathologic fracture due to the osteoporosis, even if they have had a fracture in the past. For patients with a history of osteoporosis fractures, status code Z87.310, Personal history of (healed) osteoporosis fracture, should follow the code from M81.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.13.d.1
Osteoporosis with current pathological fracture (M80)

Category M80, Osteoporosis with current pathological fracture, is for patients who have a current pathologic fracture at the time of an encounter. The codes under M80 identify the site of the fracture. A code from category M80, not a traumatic fracture code, should be used for any patient with known osteoporosis who suffers a fracture, even if the patient had a minor fall or trauma, if that fall or trauma would not usually break a normal, healthy bone.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.13.d.2

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference M85 with the canonical source and edition:

M85 — Other disorders of bone density and structure. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/M85

Canonical URL: https://icd10codingpro.com/codes/M85

Related Codes

All Codes in M85

Every most-specific code under M85 Other disorders of bone density and structure (169 codes):

Show the complete M85 code list
M85.00 Fibrous dysplasia (monostotic), unspecified site M85.011 Fibrous dysplasia (monostotic), right shoulder M85.012 Fibrous dysplasia (monostotic), left shoulder M85.019 Fibrous dysplasia (monostotic), unspecified shoulder M85.021 Fibrous dysplasia (monostotic), right upper arm M85.022 Fibrous dysplasia (monostotic), left upper arm M85.029 Fibrous dysplasia (monostotic), unspecified upper arm M85.031 Fibrous dysplasia (monostotic), right forearm M85.032 Fibrous dysplasia (monostotic), left forearm M85.039 Fibrous dysplasia (monostotic), unspecified forearm M85.041 Fibrous dysplasia (monostotic), right hand M85.042 Fibrous dysplasia (monostotic), left hand M85.049 Fibrous dysplasia (monostotic), unspecified hand M85.051 Fibrous dysplasia (monostotic), right thigh M85.052 Fibrous dysplasia (monostotic), left thigh M85.059 Fibrous dysplasia (monostotic), unspecified thigh M85.061 Fibrous dysplasia (monostotic), right lower leg M85.062 Fibrous dysplasia (monostotic), left lower leg M85.069 Fibrous dysplasia (monostotic), unspecified lower leg M85.071 Fibrous dysplasia (monostotic), right ankle and foot M85.072 Fibrous dysplasia (monostotic), left ankle and foot M85.079 Fibrous dysplasia (monostotic), unspecified ankle and foot M85.08 Fibrous dysplasia (monostotic), other site M85.09 Fibrous dysplasia (monostotic), multiple sites M85.10 Skeletal fluorosis, unspecified site M85.111 Skeletal fluorosis, right shoulder M85.112 Skeletal fluorosis, left shoulder M85.119 Skeletal fluorosis, unspecified shoulder M85.121 Skeletal fluorosis, right upper arm M85.122 Skeletal fluorosis, left upper arm M85.129 Skeletal fluorosis, unspecified upper arm M85.131 Skeletal fluorosis, right forearm M85.132 Skeletal fluorosis, left forearm M85.139 Skeletal fluorosis, unspecified forearm M85.141 Skeletal fluorosis, right hand M85.142 Skeletal fluorosis, left hand M85.149 Skeletal fluorosis, unspecified hand M85.151 Skeletal fluorosis, right thigh M85.152 Skeletal fluorosis, left thigh M85.159 Skeletal fluorosis, unspecified thigh M85.161 Skeletal fluorosis, right lower leg M85.162 Skeletal fluorosis, left lower leg M85.169 Skeletal fluorosis, unspecified lower leg M85.171 Skeletal fluorosis, right ankle and foot M85.172 Skeletal fluorosis, left ankle and foot M85.179 Skeletal fluorosis, unspecified ankle and foot M85.18 Skeletal fluorosis, other site M85.19 Skeletal fluorosis, multiple sites M85.2 Hyperostosis of skull M85.30 Osteitis condensans, unspecified site M85.311 Osteitis condensans, right shoulder M85.312 Osteitis condensans, left shoulder M85.319 Osteitis condensans, unspecified shoulder M85.321 Osteitis condensans, right upper arm M85.322 Osteitis condensans, left upper arm M85.329 Osteitis condensans, unspecified upper arm M85.331 Osteitis condensans, right forearm M85.332 Osteitis condensans, left forearm M85.339 Osteitis condensans, unspecified forearm M85.341 Osteitis condensans, right hand M85.342 Osteitis condensans, left hand M85.349 Osteitis condensans, unspecified hand M85.351 Osteitis condensans, right thigh M85.352 Osteitis condensans, left thigh M85.359 Osteitis condensans, unspecified thigh M85.361 Osteitis condensans, right lower leg M85.362 Osteitis condensans, left lower leg M85.369 Osteitis condensans, unspecified lower leg M85.371 Osteitis condensans, right ankle and foot M85.372 Osteitis condensans, left ankle and foot M85.379 Osteitis condensans, unspecified ankle and foot M85.38 Osteitis condensans, other site M85.39 Osteitis condensans, multiple sites M85.40 Solitary bone cyst, unspecified site M85.411 Solitary bone cyst, right shoulder M85.412 Solitary bone cyst, left shoulder M85.419 Solitary bone cyst, unspecified shoulder M85.421 Solitary bone cyst, right humerus M85.422 Solitary bone cyst, left humerus M85.429 Solitary bone cyst, unspecified humerus M85.431 Solitary bone cyst, right ulna and radius M85.432 Solitary bone cyst, left ulna and radius M85.439 Solitary bone cyst, unspecified ulna and radius M85.441 Solitary bone cyst, right hand M85.442 Solitary bone cyst, left hand M85.449 Solitary bone cyst, unspecified hand M85.451 Solitary bone cyst, right pelvis M85.452 Solitary bone cyst, left pelvis M85.459 Solitary bone cyst, unspecified pelvis M85.461 Solitary bone cyst, right tibia and fibula M85.462 Solitary bone cyst, left tibia and fibula M85.469 Solitary bone cyst, unspecified tibia and fibula M85.471 Solitary bone cyst, right ankle and foot M85.472 Solitary bone cyst, left ankle and foot M85.479 Solitary bone cyst, unspecified ankle and foot M85.48 Solitary bone cyst, other site M85.50 Aneurysmal bone cyst, unspecified site M85.511 Aneurysmal bone cyst, right shoulder M85.512 Aneurysmal bone cyst, left shoulder M85.519 Aneurysmal bone cyst, unspecified shoulder M85.521 Aneurysmal bone cyst, right upper arm M85.522 Aneurysmal bone cyst, left upper arm M85.529 Aneurysmal bone cyst, unspecified upper arm M85.531 Aneurysmal bone cyst, right forearm M85.532 Aneurysmal bone cyst, left forearm M85.539 Aneurysmal bone cyst, unspecified forearm M85.541 Aneurysmal bone cyst, right hand M85.542 Aneurysmal bone cyst, left hand M85.549 Aneurysmal bone cyst, unspecified hand M85.551 Aneurysmal bone cyst, right thigh M85.552 Aneurysmal bone cyst, left thigh M85.559 Aneurysmal bone cyst, unspecified thigh M85.561 Aneurysmal bone cyst, right lower leg M85.562 Aneurysmal bone cyst, left lower leg M85.569 Aneurysmal bone cyst, unspecified lower leg M85.571 Aneurysmal bone cyst, right ankle and foot M85.572 Aneurysmal bone cyst, left ankle and foot M85.579 Aneurysmal bone cyst, unspecified ankle and foot M85.58 Aneurysmal bone cyst, other site M85.59 Aneurysmal bone cyst, multiple sites M85.60 Other cyst of bone, unspecified site M85.611 Other cyst of bone, right shoulder M85.612 Other cyst of bone, left shoulder M85.619 Other cyst of bone, unspecified shoulder M85.621 Other cyst of bone, right upper arm M85.622 Other cyst of bone, left upper arm M85.629 Other cyst of bone, unspecified upper arm M85.631 Other cyst of bone, right forearm M85.632 Other cyst of bone, left forearm M85.639 Other cyst of bone, unspecified forearm M85.641 Other cyst of bone, right hand M85.642 Other cyst of bone, left hand M85.649 Other cyst of bone, unspecified hand M85.651 Other cyst of bone, right thigh M85.652 Other cyst of bone, left thigh M85.659 Other cyst of bone, unspecified thigh M85.661 Other cyst of bone, right lower leg M85.662 Other cyst of bone, left lower leg M85.669 Other cyst of bone, unspecified lower leg M85.671 Other cyst of bone, right ankle and foot M85.672 Other cyst of bone, left ankle and foot M85.679 Other cyst of bone, unspecified ankle and foot M85.68 Other cyst of bone, other site M85.69 Other cyst of bone, multiple sites M85.80 Other specified disorders of bone density and structure, unspecified site M85.811 Other specified disorders of bone density and structure, right shoulder M85.812 Other specified disorders of bone density and structure, left shoulder M85.819 Other specified disorders of bone density and structure, unspecified shoulder M85.821 Other specified disorders of bone density and structure, right upper arm M85.822 Other specified disorders of bone density and structure, left upper arm M85.829 Other specified disorders of bone density and structure, unspecified upper arm M85.831 Other specified disorders of bone density and structure, right forearm M85.832 Other specified disorders of bone density and structure, left forearm M85.839 Other specified disorders of bone density and structure, unspecified forearm M85.841 Other specified disorders of bone density and structure, right hand M85.842 Other specified disorders of bone density and structure, left hand M85.849 Other specified disorders of bone density and structure, unspecified hand M85.851 Other specified disorders of bone density and structure, right thigh M85.852 Other specified disorders of bone density and structure, left thigh M85.859 Other specified disorders of bone density and structure, unspecified thigh M85.861 Other specified disorders of bone density and structure, right lower leg M85.862 Other specified disorders of bone density and structure, left lower leg M85.869 Other specified disorders of bone density and structure, unspecified lower leg M85.871 Other specified disorders of bone density and structure, right ankle and foot M85.872 Other specified disorders of bone density and structure, left ankle and foot M85.879 Other specified disorders of bone density and structure, unspecified ankle and foot M85.88 Other specified disorders of bone density and structure, other site M85.89 Other specified disorders of bone density and structure, multiple sites M85.9 Disorder of bone density and structure, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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