2025 ICD-10-CM Diagnosis Code I73.0

Raynaud's syndrome

ICD-10-CM Code:: I73.0
ICD-10 Code for:: Raynaud's syndrome
Is Billable?: Not Valid for Submission
Code Navigator:

I73.0 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of raynaud's syndrome. The code is not specific and is NOT valid for the year 2025 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Table of Contents

Code Information
Specific Coding
Clinical Information
Tabular List of Diseases and Injuries
Patient Education
Other Codes Used Similar Conditions
Code History

Specific Coding Applicable to Raynaud's syndrome

Non-specific codes like I73.0 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for raynaud's syndrome:

Use I73.00 for Raynaud's syndrome without gangrene - BILLABLE CODE
Use I73.01 for Raynaud's syndrome with gangrene - BILLABLE CODE

Code Classification

Diseases of the circulatory system
I00–I99
- Diseases of arteries, arterioles and capillaries
  I70-I79
  - Other peripheral vascular diseases
    I73

Clinical Information

Peripheral Vascular Diseases
pathological processes involving any one of the blood vessels in the vasculature outside the heart.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.

Inclusion Terms

Raynaud's disease
Raynaud's phenomenon (secondary)

Patient Education

Raynaud Phenomenon

What is Raynaud phenomenon?

Raynaud phenomenon is a condition that affects your blood vessels (the tubes that your blood flows through). It causes your blood vessels to narrow, which decreases blood flow. This is called a Raynaud episode or "attack." The attacks usually affect your fingers and toes, causing them to become cold and numb. They may also change color, usually to white or blue. These attacks happen in response to cold temperatures or stress.

Raynaud phenomenon may also be called Raynaud disease or Raynaud syndrome.

What are the types of Raynaud phenomenon?

There are two types of Raynaud phenomenon:

Primary Raynaud phenomenon is the more common type. Its cause is unknown.
Secondary Raynaud phenomenon is usually caused by another disease or problem, such as lupus or scleroderma. Other causes may be exposure to cold or certain chemicals. The type can be more serious than the primary type.

What causes Raynaud phenomenon?

Researchers don't know exactly why some people develop Raynaud phenomenon. But they do understand how the attacks happen. When you are exposed to cold, your body tries to slow the loss of heat and maintain its temperature. To do this, the blood vessels in the top layer of your skin constrict (narrow). This moves blood from those vessels near the surface to vessels deeper in the body. But when you have Raynaud phenomenon, the blood vessels in your hands and feet react to cold or stress by narrowing quickly. They also stay narrowed for a long time.

Who is more likely to develop Raynaud phenomenon?

Anyone can develop Raynaud phenomenon, but some people are more likely to develop it:

Primary Raynaud phenomenon has been linked to:
- Your sex. Women get it more often than men.
- Your age. It usually develops in people younger than age 30. It often starts in the teenage years.
- A family history of Raynaud phenomenon. You are more likely to develop Raynaud phenomenon if you have a family member who has it.
Secondary Raynaud phenomenon has been linked to:
- Certain diseases. These include lupus, scleroderma, rheumatoid arthritis (RA), carpal tunnel syndrome, and connective tissue disorders.
- Certain medicines. Medicines that treat high blood pressure, migraines, and attention deficit hyperactivity disorder (ADHD) may cause similar symptoms to Raynaud phenomenon or make your symptoms worse.
- Work-related exposures, such as repeated use of vibrating machinery (such as a jackhammer), or exposure to cold or certain chemicals.

What are the symptoms of Raynaud phenomenon?

Raynaud attacks most often happen when you get cold, for example when you grab something cold from the freezer or go into an air-conditioned building on a warm day. Attacks usually affect your fingers and toes. But sometimes they can affect other parts of your body, such as your ears, nose, lips, or nipples.

An attack causes the skin to become cold and numb. Your skin may also turn white or blue due to a lack of oxygen. As the blood flow returns, your skin may tingle, throb, or turn red. An attack may last a few minutes or a few hours. If you have darker skin, you may not be able to easily see the skin color changes.

For many people, especially those with the primary type, the symptoms are mild. People with the secondary type often have more severe symptoms. They may develop skin ulcers (open sores caused by poor blood flow) or skin infections.

How is Raynaud phenomenon diagnosed?

There is no specific test to diagnose Raynaud phenomenon. To find out if you have it, your health care provider:

Will take your medical history and ask about your symptoms.
Will do a physical exam.
May order blood and other lab tests to check for other conditions which could be causing your symptoms and/or to help decide which type of Raynaud phenomenon you have.

What are the treatments for Raynaud phenomenon?

Most people with Raynaud phenomenon can keep their symptoms under control by avoiding getting cold. But if this is not enough, medicines and, in some cases, surgical procedures can help.

Secondary Raynaud phenomenon is more likely to be serious and to need more treatments. It's also important to treat the condition or problem that is causing your Raynaud phenomenon.

You may need to see a specialist such as a rheumatologist, a doctor who treats diseases of the joints, muscles, and bones.

Can Raynaud phenomenon be prevented?

Raynaud phenomenon cannot be prevented, but you can help prevent attacks and manage your symptoms by:

Placing your hands or feet in a warm place when you have an attack. This could mean putting them under warm (not hot) water or under a heating pad.
Keeping your body, especially your hands and feet, warm in cold weather.
Avoiding triggers, such as certain medicines and stress.
Quitting smoking (or not starting smoking).
Managing stress.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

[Learn More in MedlinePlus]

Raynaud phenomenon

Raynaud phenomenon is a condition in which the body's normal response to cold or emotional stress is exaggerated, resulting in abnormal spasms (vasospasms) in small blood vessels called arterioles. The disorder mainly affects the fingers but can also involve the ears, nose, nipples, knees, or toes. The vasospasms reduce blood circulation, leading to discomfort and skin color changes.

Raynaud phenomenon is episodic, meaning that it comes and goes. A typical episode lasts about 15 minutes after the cold exposure or stressor has ended and involves mild discomfort such as numbness or a feeling of "pins and needles." The affected areas usually turn white or blue when exposed to cold or when emotional stress occurs, and then turn red when re-warmed or when the stress eases.

Raynaud phenomenon is categorized as primary when there is no underlying disorder that accounts for the exaggerated response of the blood vessels. It is called secondary when it is associated with another condition. Secondary Raynaud phenomenon is often associated with autoimmune disorders, which occur when the immune system malfunctions and attacks the body's own tissues and organs. Autoimmune disorders with which Raynaud phenomenon can be associated include systemic lupus erythematosus, scleroderma, rheumatoid arthritis, and Sjögren syndrome.

Primary Raynaud phenomenon is much more common and usually less severe than secondary Raynaud phenomenon. In severe cases of secondary Raynaud phenomenon, sores on the pads of the fingers or tissue death (necrosis) can occur. Primary Raynaud phenomenon often begins between the ages of 15 and 25, while secondary Raynaud phenomenon usually starts after age 30. Some people with Raynaud phenomenon alone later go on to develop another associated condition; regardless of which comes first, these cases are classified as secondary Raynaud phenomenon.