ICD-10-CM Diagnosis Code M79.7 - Fibromyalgia (original) (raw)

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ICD List 2025-2026 Edition

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Fibromyalgia

ICD-10-CM Code:

M79.7

ICD-10 Code for:

Fibromyalgia

Is Billable?

Yes - Valid for Submission

Chronic Condition Indicator: [1]

Chronic

Code Navigator:

M79.7 is a billable diagnosis code used to specify a medical diagnosis of fibromyalgia. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026.

  1. Code Information
  2. Approximate Synonyms
  3. Clinical Classification
  4. Clinical Information
  5. Tabular List of Diseases and Injuries
  6. Index to Diseases and Injuries References
  8. Diagnostic Related Groups Mapping
  9. Convert to ICD-9 Code
  10. Patient Education
  11. Other Codes Used Similar Conditions
  12. Code History

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

CCSR Code: MUS025

Inpatient Default: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.

Outpatient Default: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

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)

inflammation and fibrous degeneration of a muscle.

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

References found for this diagnosis code in the External Cause of Injuries Index:

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

ICD-9-CM: 729.1

Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.

Fibromyalgia

Fibromyalgia is chronic (long-lasting) condition that causes pain all over the body, fatigue, and other symptoms. There is no cure, but treatments can help with the symptoms.

What causes fibromyalgia?

The exact cause of fibromyalgia is unknown. Studies of the brains of people with fibromyalgia found that they seem to process pain differently than people who don't have it. They may feel pain when others do not, and they may also have a more severe reaction to pain.

Fibromyalgia can run in families, so genetics may also play a role. Other factors may also be involved, such as having certain diseases that cause pain.

Who is at risk for fibromyalgia?

Anyone can get fibromyalgia, but it is more common in:

What are the symptoms of fibromyalgia?

The main symptoms of fibromyalgia are:

Other symptoms may include:

People who have fibromyalgia are also more likely to have certain diseases, including:

How is fibromyalgia diagnosed?

Fibromyalgia can be hard to diagnose. It sometimes takes visits to several different health care providers to get a diagnosis. One problem is that there isn't a specific test for it. And the main symptoms, pain and fatigue, are common in many other conditions. Providers have to rule out other causes of the symptoms before making a diagnosis of fibromyalgia. This is called making a differential diagnosis.

To find out if you have fibromyalgia, your provider:

What are the treatments for fibromyalgia?

Not all providers are familiar with fibromyalgia and its treatment. You should see a provider or team of providers who specialize in the treatment of fibromyalgia.

There is no cure for fibromyalgia, so treatment focuses on relieving the symptoms. Providers usually use a combination of treatments, including medicines, lifestyle changes, talk therapy, and complementary therapies:

[Learn More in MedlinePlus]

Fibromyalgia

Fibromyalgia is a common condition characterized by long-lasting (chronic) pain affecting many areas of the body. The pain is associated with tenderness that occurs with touch or pressure on the muscles, joints, or skin. Some affected individuals also report numbness, tingling, or a burning sensation (paresthesia) in the arms and legs.

Other signs and symptoms of fibromyalgia include excessive tiredness (exhaustion); sleep problems, such as waking up feeling unrefreshed; and problems with memory or thinking clearly. People with fibromyalgia often report additional types of pain, including headaches, back and neck pain, sore throat, pain or clicking in the jaw (temporomandibular joint dysfunction), and stomach pain or digestive disorders such as irritable bowel syndrome. They have an increased likelihood of developing mood or psychiatric disorders including depression, anxiety, and obsessive-compulsive disorder. However, many people with fibromyalgia do not have a mental health condition.

The major signs and symptoms of fibromyalgia can occur by themselves or together with another chronic pain condition such as osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, or systemic lupus erythematosus.

[Learn More in MedlinePlus]

Fibromyalgia

Fibromyalgia is a long-lasting or chronic disorder that causes muscle pain and fatigue (feeling tired).
[Learn More in MedlinePlus]