M85.8

Other specified disorders of bone density and structure

Header / non-billable

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This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · M85.8
Excludes 1

diffuse idiopathic skeletal hyperostosis [DISH] (M48.1) osteosclerosis congenita (Q77.4) osteosclerosis fragilitas (generalista) (Q78.2) osteosclerosis myelofibrosis (D75.81)

Synonyms

Hyperostosis of bones, except skull Osteosclerosis, acquired

Inherited from M85Other disorders of bone density and structure
Excludes 1

osteogenesis imperfecta (Q78.0) osteopetrosis (Q78.2) osteopoikilosis (Q78.8) polyostotic fibrous dysplasia (Q78.1)

Inherited from chapter 13Diseases of the musculoskeletal system and connective tissue
Excludes 2

arthropathic psoriasis (L40.5-) certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) compartment syndrome (traumatic) (T79.A-) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Note

Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition (M00-M25) Arthropathies (M00-M25) Includes: Disorders affecting predominantly peripheral (limb) joints (M40-M54) Dorsopathies (M40-M54) (M60-M79) Soft tissue disorders (M60-M79) (M80-M94) Osteopathies and chondropathies (M80-M94)

Official Guidelines for M85.8

FY 2026 ›
I.C.13Chapter-specific guidanceChapter 13: Diseases of the Musculoskeletal System and Connective

Subsections