R64: Cachexia

Everyone needs energy to grow and stay healthy. This energy comes from foods. With some disorders, the person has less energy available than they need. Muscles and fatty tissue are then broken down to get energy. As a result, the person loses weight and gets thinner over time. The person may then quickly feel tired and have less strength than usual.

There are various reasons why someone may have too little energy. With certain disorders, more energy than normal is required. The person may also eat less because of pain or loss of appetite. With some disorders, too, nutrition is not absorbed into the body as well.

Patient Disclaimer

The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.

If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.

For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.