2025 ICD-10-CM Diagnosis Code M34

Specific Coding Applicable to Systemic sclerosis [scleroderma]

Non-specific codes like M34 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 systemic sclerosis [scleroderma]:

Patient Education

Scleroderma

What is scleroderma?

Scleroderma means "hard skin." It's the name of an autoimmune disease that causes inflammation and thickening in the skin and other areas of the body. This inflammation causes you to have areas of tight, hard skin. Scleroderma may affect just one area of your body, or it can affect many systems in your body.

What are the types of scleroderma?

There are two main types of scleroderma:

• Localized scleroderma only affects your skin and the muscles and tissues just under your skin.
• Systemic scleroderma, which is also called systemic sclerosis, is a more serious type. It affects many parts of your body and can damage your blood vessels and internal organs, such as your heart, lungs, and kidneys.

What causes scleroderma?

The exact cause of scleroderma is unknown. Researchers think that several factors may play a part in causing the disease:

• Your genetics. Certain genes can increase the chance that you will develop scleroderma. They may also play a role in which the type of scleroderma you have. Scleroderma is not passed from parent to child, but you are more likely to develop it if a close relative has it.
• Your environment. Exposure to certain things in the environment, such as viruses or chemicals, may trigger scleroderma.
• Immune system changes. When your immune system changes, it can trigger your cells to make too much collagen in the body. Too much collagen causes patches of tight, hard skin.
• Hormones. Hormonal or immune system differences between women and men might play a part in the disease.

Who is more likely to develop scleroderma?

Anyone can get scleroderma, but certain factors may make you more likely to develop it:

• Your sex. Scleroderma is more common in women than in men.
• Your age. The disease usually appears between the ages of 30 and 50.
• Your race. Scleroderma can affect people of all races and ethnic groups, but the disease can affect African Americans more severely.

What are the symptoms of scleroderma?

The symptoms of scleroderma are different for each person, depending on the type of scleroderma you have:

• Localized scleroderma usually causes patches of thick, hard skin in one of two patterns:
  • Patches in firm, oval shapes that stay in one area or spread to other areas of skin. This is called morphea.
  • Lines of thickened or different colored skin that run down your arm, leg, and, rarely, on the forehead. This is called linear scleroderma.
• Systemic scleroderma can cause problems with your internal organs as well as your skin. It can cause symptoms such as:
  • Thick, tight skin on your fingers
  • Fatigue
  • Raynaud's phenomenon, a narrowing of blood vessels in the hands or feet
  • Damage to your internal organs, including your digestive system, lungs, kidneys, and heart

How is scleroderma diagnosed?

There is no single test for scleroderma. The symptoms can vary from person to person and can be similar to those of other diseases. This can make scleroderma hard to diagnose.

To find out if you have scleroderma, your health care provider:

• Will ask about your symptoms and medical history
• Will do a physical exam
• May order blood tests, including an ANA (antinuclear antibody) test
• May do a skin biopsy
• May do other tests, such as imaging tests, to check for organ damage

What are the treatments for scleroderma?

There is no cure for scleroderma, but treatments can help control your symptoms and limit damage. The treatments may include:

• Medicines to help decrease swelling, manage pain, control other symptoms, and prevent complications.
• Physical or occupational therapy to help with pain, improve muscle strength, and teach you ways to help with daily living.
• Regular dental care, because scleroderma can make your mouth dry and damage connective tissues in your mouth. These problems can speed up tooth decay and cause your teeth to become loose.

You may need to see specialists to help treat your disease. Many people with scleroderma will see a rheumatologist. This is a doctor who specializes in rheumatic diseases such as arthritis and other inflammatory or autoimmune disorders. Dermatologists, who specialize in conditions of the skin, hair, and nails, may also play an important role in treating the disease. And if you have organ damage, you may need to see other specialists.

You can also help manage some of your symptoms, for example by:

• Dressing warm and avoiding cold or wet environments
• Quitting smoking (if you smoke)
• Putting on sunscreen before you go outdoors
• Using moisturizers on your skin to help lessen stiffness
• Avoiding hot baths and showers, harsh soaps, and household cleaners
• Getting regular physical activity

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

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Systemic scleroderma

Systemic scleroderma is an autoimmune disorder that affects the skin and internal organs. Autoimmune disorders occur when the immune system malfunctions and attacks the body's own tissues and organs. The word "scleroderma" means hard skin in Greek, and the condition is characterized by the buildup of scar tissue (fibrosis) in the skin and other organs. The condition is also called systemic sclerosis because the fibrosis can affect organs other than the skin. Fibrosis is due to the excess production of a tough protein called collagen, which normally strengthens and supports connective tissues throughout the body.

The signs and symptoms of systemic scleroderma usually begin with episodes of Raynaud phenomenon, which can occur weeks to years before fibrosis. In Raynaud phenomenon, the fingers and toes of affected individuals turn white or blue in response to cold temperature or other stresses. This effect occurs because of problems with the small vessels that carry blood to the extremities. Another early sign of systemic scleroderma is puffy or swollen hands before thickening and hardening of the skin due to fibrosis. Skin thickening usually occurs first in the fingers (called sclerodactyly) and may also involve the hands and face. In addition, people with systemic scleroderma often have open sores (ulcers) on their fingers, painful bumps under the skin (calcinosis), or small clusters of enlarged blood vessels just under the skin (telangiectasia).

Fibrosis can also affect internal organs and can lead to impairment or failure of the affected organs. The most commonly affected organs are the esophagus, heart, lungs, and kidneys. Internal organ involvement may be signaled by heartburn, difficulty swallowing (dysphagia), high blood pressure (hypertension), kidney problems, shortness of breath, diarrhea, or impairment of the muscle contractions that move food through the digestive tract (intestinal pseudo-obstruction).

There are three types of systemic scleroderma, defined by the tissues affected in the disorder. In one type of systemic scleroderma, known as limited cutaneous systemic scleroderma, fibrosis usually affects only the hands, arms, and face. Limited cutaneous systemic scleroderma used to be known as CREST syndrome, which is named for the common features of the condition: calcinosis, Raynaud phenomenon, esophageal motility dysfunction, sclerodactyly, and telangiectasia. In another type of systemic scleroderma, known as diffuse cutaneous systemic scleroderma, the fibrosis affects large areas of skin, including the torso and the upper arms and legs, and often involves internal organs. In diffuse cutaneous systemic scleroderma, the condition worsens quickly and organ damage occurs earlier than in other types of the condition. In the third type of systemic scleroderma, called systemic sclerosis sine scleroderma ("sine" means without in Latin), fibrosis affects one or more internal organs but not the skin.

Approximately 15 percent to 25 percent of people with features of systemic scleroderma also have signs and symptoms of another condition that affects connective tissue, such as polymyositis, dermatomyositis, rheumatoid arthritis, Sjögren syndrome, or systemic lupus erythematosus. The combination of systemic scleroderma with other connective tissue abnormalities is known as scleroderma overlap syndrome.

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Code History

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.