M85.8
Other specified disorders of bone density and structure
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 18 never code together
M85.8code
M85code
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 3
Index entries leading here 4
Alongside this code 8 same parent — M85
M85.0 Fibrous dysplasia (monostotic) category M85.1 Skeletal fluorosis category M85.2 Hyperostosis of skull M85.3 Osteitis condensans category M85.4 Solitary bone cyst category M85.5 Aneurysmal bone cyst category M85.6 Other cyst of bone category M85.9 Disorder of bone density and structure, unspecified
Subordinate codes 10
M85.80 Oth disrd of bone density and structure, unspecified site M85.81 Oth disrd of bone density and structure, shoulder M85.82 Oth disrd of bone density and structure, upper arm M85.83 Oth disrd of bone density and structure, forearm M85.84 Oth disrd of bone density and structure, hand M85.85 Oth disrd of bone density and structure, thigh M85.86 Oth disrd of bone density and structure, lower leg M85.87 Oth disrd of bone density and structure, ankle and foot M85.88 Oth disrd of bone density and structure, other site M85.89 Oth disrd of bone density and structure, multiple sites
Medications 5
41 Bipolar and Related Disorders drugs 13 Bone Marrow Failure Disorders drugs 10 Feeding and Eating Disorders drugs 65 Sleep Initiation and Maintenance Disorders drugs 19 Trauma and Stressor Related Disorders drugs
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.