Myalgia is a medical term for muscle pain that can have various causes and treatments. Learn about the common factors, signs, and remedies for myalgia and how to distinguish it from fibromyalgia. ICD 10 code for Myalgia . Get free rules, notes, crosswalks, synonyms, history for ICD-10 code M79.1. Myalgia is pain in the muscles resulting from various causes that affect the body muscles. Myalgia in itself, is a symptom, probably of an underlying condition. Know the causes, symptoms, treatment and Home Remedies for Myalgia . Myalgia is muscle pain caused by factors like injury, overuse, infections, or chronic illnesses. Learn its symptoms, common triggers, and effective ways to manage and prevent muscle discomfort.