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Other bone density and structure disorders

Also known as: Disorder of bone density or structure, unspecified

General information only. Anpheros does not diagnose and does not recommend treatment. Talk to a doctor or pharmacist about your situation. In an emergency, call 112 (or your local emergency number).

In short

Bone density is a measure of the amount of calcium and other minerals in bone, which are broken down and replaced by the body to keep bones strong. Losing bone density weakens the bones and can lead to osteopenia or osteoporosis, a disease that makes bones more likely to break. Bones become less dense as a person ages, and other factors such as family history, certain medical conditions, certain medicines, smoking, heavy alcohol use, or physical inactivity can also make a person more likely to lose bone mass. A bone density scan measures bone health, while a healthy diet rich in calcium and vitamin D, regular physical activity, limiting alcohol, and not smoking can help keep bones strong.

Source: MedlinePlus, National Library of Medicine.

AI-generated summary of the sources cited on this page, checked automatically against them. Not reviewed by a clinician; not medical advice.

Codes

ICD-10
M85
ICD-11
FB80.Z Disorder of bone density or structure, unspecified

Description

What is bone density?

Your bones are made of living tissue. To keep them strong, your body breaks down old bone and replaces it with new bone. But when more bone is broken down than replaced, you lose bone density, also called bone mass. Bone density is a measure of the amount of calcium and other minerals in bone. Bones containing more minerals are denser. They tend to be stronger and less likely to fracture (break).

Losing bone density can weaken your bones. In some cases, it can lead to osteoporosis. This is a disease which can make your bones more likely to break. Low bone density that is not low enough to be osteoporosis is sometimes called osteopenia.

What can make you lose bone density?

Your bones become less dense as you age. Other factors can also make you more likely to lose bone mass, such as:

  • A family history of osteoporosis or low bone mass
  • Not developing good bone mass when you are young
  • Having certain medical conditions, such as:
  • Endocrine diseases
  • Certain digestive diseases
  • Rheumatoid arthritis
  • Certain types of cancer
  • HIV
  • Anorexia nervosa, a type of eating disorder
  • Taking certain medicines, such as:
  • Corticosteroids
  • Proton pump inhibitors (which treat GERD)
  • Medicines to treat epilepsy
  • Smoking tobacco
  • Long-term heavy alcohol use
  • Physical inactivity or prolonged periods of bedrest

Not everyone who has low bone mass gets osteoporosis, but they are at higher risk for developing it.

Is there a test to measure your bone health?

A bone density scan is the best way to measure your bone health. It compares your bone density, or mass, to that of a healthy person who is the same age and sex as you are. It can show:

  • Whether you have low bone density
  • Whether you have osteoporosis, a disease that makes your bones weak
  • Your risk for breaking bones
  • Whether your osteoporosis treatment is working

How can I keep my bones strong?

To help keep your bones strong and help prevent osteoporosis, the best thing to do is to eat a healthy diet rich in calcium and vitamin D. Getting regular physical activity, limiting alcohol, and not smoking can also help. In some cases, your health care provider may prescribe medicines to prevent osteoporosis.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

Source: MedlinePlus, National Library of Medicine.

Next to it in ICD-10

Neighbouring codes in the classification, not a medical link.

External resources

Questions

What is the ICD-10 code for Other bone density and structure disorders?

M85 (WHO, International Classification of Diseases, 10th Revision).

What is the ICD-11 code for Other bone density and structure disorders?

FB80.Z: Disorder of bone density or structure, unspecified (WHO, ICD-11 for Mortality and Morbidity Statistics).

Sources and attribution

  • ICD-11 for Mortality and Morbidity Statistics, © World Health Organization, licensed under CC BY-ND 3.0 IGO.
  • Names other than the official source titles: Anpheros translations and plain-language names, made with AI assistance and checked automatically; the source names are in English.
  • Source: MedlinePlus, National Library of Medicine.
  • ICD-10 codes and titles © World Health Organization. Source: WHO, International Classification of Diseases, 10th Revision (2019).

Anpheros Search catalog 2026.10.5, published 17 October 2026. About the data →