Specific code icon 2014 ICD-10-CM Diagnosis Code M79.7


  • M79.7 is a billable ICD-10-CM code that can be used to specify a diagnosis.
  • On October 1, 2015 ICD-10-CM will replace ICD-9-CM in the United States, therefore, M79.7 and all other ICD-10-CM codes should only be used for training or planning purposes until then.
Clinical Information
  • A chronic disorder of unknown etiology characterized by pain, stiffness, and tenderness in the muscles of neck, shoulders, back, hips, arms, and legs. Other signs and symptoms include headaches, fatigue, sleep disturbances, and painful menstruation.
  • A common nonarticular rheumatic condition that is characterized by muscle pain, tenderness, and stiffness.
  • A common nonarticular rheumatic syndrome characterized by myalgia and multiple points of focal muscle tenderness to palpation (trigger points). Muscle pain is typically aggravated by inactivity or exposure to cold. This condition is often associated with general symptoms, such as sleep disturbances, fatigue, stiffness, headaches, and occasionally depression. There is significant overlap between fibromyalgia and the chronic fatigue syndrome (fatigue syndrome, chronic). Fibromyalgia may arise as a primary or secondary disease process. It is most frequent in females aged 20 to 50 years. (from Adams et al., Principles of Neurology, 6th ed, p1494-95)
  • An acute, subacute, or chronic painful state of muscles, subcutaneous tissues, ligaments, tendons, or fasciae caused by a number of agents such as trauma, strain, occupation, exposure, posture, infection, or arthritis.
  • Fibromyalgia makes you feel tired and causes muscle pain and "tender points." tender points are places on the neck, shoulders, back, hips, arms or legs that hurt when touched. People with fibromyalgia may have other symptoms, such as trouble sleeping, morning stiffness, headaches, and problems with thinking and memory, sometimes called "fibro fog."no one knows what causes fibromyalgia. Anyone can get it, but it is most common in middle-aged women. People with rheumatoid arthritis and other autoimmune diseases are particularly likely to develop fibromyalgia. There is no cure for fibromyalgia, but medicines can help you manage your symptoms. Getting enough sleep and exercising may also help. nih: national institute of arthritis and musculoskeletal and skin diseases
  • Inflammation and fibrous degeneration of a muscle.
Applicable To
  • Fibromyositis
  • Fibrositis
  • Myofibrositis
Mortality Data
  • Between 1999-2007 there were 33 deaths in the United States where ICD-10 M79.7 was indicated as the underlying cause of death [source: cdc.govlink to cdc.gov]
  • ICD-10 M79.7 as underlying cause of death data broken down by: gender, age, race, year
ICD-10-CM M79.7 is grouped within Diagnostic Related Group(s) (MS-DRG v30.0):
  • 555 Signs & symptoms of musculoskeletal system & conn tissue with mcc
  • 556 Signs & symptoms of musculoskeletal system & conn tissue without mcc
Convert ICD-10-CM M79.7 to ICD-9-CM
The following ICD-10-CM Index entries contain back-references to ICD-10-CM M79.7:
  • Fibromyalgia M79.7
  • Fibromyositis M79.7
  • Fibrositis (periarticular) M79.7
  • Myofibrositis M79.7