ICD-10-CM Diagnosis Code J98.2 - Interstitial emphysema (original) (raw)
ICD List 2025-2026 Edition
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- 2026 ICD-10-CM Code J98.2
Interstitial emphysema
ICD-10-CM Code:
J98.2
ICD-10 Code for:
Interstitial emphysema
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:
J98.2 is a billable diagnosis code used to specify a medical diagnosis of interstitial emphysema. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026.
- Code Information
- Approximate Synonyms
- Clinical Classification
- Clinical Information
- Tabular List of Diseases and Injuries
- Index to Diseases and Injuries References
- Diagnostic Related Groups Mapping
- Convert to ICD-9 Code
- Patient Education
- Other Codes Used Similar Conditions
- Code History
- Diseases of the respiratory system
J00–J99
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.
- Interstitial emphysema of lung
- Mediastinal emphysema
- Subcutaneous emphysema
- Tension pneumomediastinum
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: RSP011
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.
Mediastinal Emphysema
presence of air in the mediastinal tissues due to leakage of air from the tracheobronchial tree, usually as a result of trauma.
Subcutaneous Emphysema
presence of air or gas in the subcutaneous tissues of the body.
Grade 3 Subcutaneous Emphysema, CTCAE|Grade 3 Subcutaneous emphysema
severe or medically significant but not immediately life-threatening; hospitalization or prolongation of existing hospitalization indicated; limiting self-care adl or severe impact on age-appropriate normal daily activity (pediatric)
Grade 1 Subcutaneous Emphysema, CTCAE|Grade 1 Subcutaneous emphysema
asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated
Grade 2 Subcutaneous Emphysema, CTCAE|Grade 2 Subcutaneous emphysema
moderate; minimal, local or noninvasive intervention indicated
Grade 3 Subcutaneous Emphysema, CTCAE|Grade 3 Subcutaneous emphysema
severe or medically significant but not immediately life-threatening; hospitalization or prolongation of existing hospitalization indicated; limiting self care adl
Subcutaneous Emphysema
the presence of air or gas in subcutaneous tissue.
Subcutaneous Emphysema, CTCAE|Subcutaneous emphysema
a disorder characterized by air in the subcutaneous tissue.
Traumatic Subcutaneous Emphysema
the infiltration of air into the skin tissue secondary to traumatic tissue disruption.
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).
- - Air
- - anterior mediastinum - J98.2
- - Disease, diseased - See Also: Syndrome;
- - Emphysema (atrophic) (bullous) (chronic) (interlobular) (lung) (obstructive) (pulmonary) (senile) (vesicular) - J43.9
- - interstitial - J98.2
- - mediastinal - J98.2
- - subcutaneous (traumatic) - T79.7
* - nontraumatic - J98.2
- - Pneumomediastinum - J98.2
References found for this diagnosis code in the External Cause of Injuries Index:
- Air
- anterior mediastinum
- Disease, diseased
- Hamman's (spontaneous mediastinal emphysema)
- Emphysema(atrophic) (bullous) (chronic) (interlobular) (lung) (obstructive) (pulmonary) (senile) (vesicular)
- interstitial
- Emphysema(atrophic) (bullous) (chronic) (interlobular) (lung) (obstructive) (pulmonary) (senile) (vesicular)
- mediastinal
- Emphysema(atrophic) (bullous) (chronic) (interlobular) (lung) (obstructive) (pulmonary) (senile) (vesicular)
- subcutaneous (traumatic)
- nontraumatic
- subcutaneous (traumatic)
- Pneumomediastinum
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: 518.1
This is a direct match with no additional mapping qualifiers. The absence of a flag generally means the mapping is considered exact or precise. In other words, the ICD-10 code maps cleanly to the ICD-9 code without qualification, approximation, or needing multiple codes.
Emphysema
What is emphysema?
Emphysema is a type of COPD (chronic obstructive pulmonary disease). COPD is a group of lung diseases that make it hard to breathe and get worse over time. The other main type of COPD is chronic bronchitis. Most people with COPD have both emphysema and chronic bronchitis, but how severe each type is can be different from person to person.
Emphysema affects the air sacs in your lungs. Normally, these sacs are elastic or stretchy. When you breathe in, each air sac fills up with air, like a small balloon. When you breathe out, the air sacs deflate, and the air goes out.
In emphysema, the walls between many of the air sacs in the lungs are damaged. This causes the air sacs to lose their shape and become floppy. The damage also can destroy the walls of the air sacs, leading to fewer and larger air sacs instead of many tiny ones. This makes it harder for your lungs to move oxygen in and carbon dioxide out of your body.
What causes emphysema?
The cause of emphysema is usually long-term exposure to irritants that damage your lungs and the airways. In the United States, cigarette smoke is the main cause. Pipe, cigar, and other types of tobacco smoke can also cause emphysema, especially if you inhale them.
Exposure to other inhaled irritants can contribute to emphysema. These include secondhand smoke, air pollution, and chemical fumes or dusts from the environment or workplace.
Rarely, a genetic condition called alpha-1 antitrypsin deficiency can play a role in causing emphysema.
Who is at risk for emphysema?
The risk factors for emphysema include:
- Smoking. This the main risk factor. Up to 75% of people who have emphysema smoke or used to smoke.
- Long-term exposure to other lung irritants, such as secondhand smoke, air pollution, and chemical fumes and dusts from the environment or workplace.
- Age. Most people who have emphysema are at least 40 years old when their symptoms begin.
- Genetics. This includes alpha-1 antitrypsin deficiency, which is a genetic condition. Also, smokers who get emphysema are more likely to get it if they have a family history of COPD.
What are the symptoms of emphysema?
At first, you may have no symptoms or only mild symptoms. As the disease gets worse, your symptoms usually become more severe. They can include:
- Frequent coughing or wheezing
- A cough that produces a lot mucus
- Shortness of breath, especially with physical activity
- A whistling or squeaky sound when you breathe
- Tightness in your chest
Some people with emphysema get frequent respiratory infections such as colds and the flu. In severe cases, emphysema can cause weight loss, weakness in your lower muscles, and swelling in your ankles, feet, or legs.
How is emphysema diagnosed?
Your health care provider may use many tools to make a diagnosis:
- A medical history, which includes asking about your symptoms
- A family history
- Other tests, such as lung function tests, a chest x-ray or CT scan, and blood tests
What are the treatments for emphysema?
There is no cure for emphysema. However, treatments can help with symptoms, slow the progress of the disease, and improve your ability to stay active. There are also treatments to prevent or treat complications of the disease. Treatments include:
- Lifestyle changes, such as
- Quitting smoking if you are a smoker. This is the most important step you can take to treat emphysema.
- Avoiding secondhand smoke and places where you might breathe in other lung irritants
- Ask your health care provider for an eating plan that will meet your nutritional needs. Also ask about how much physical activity you can do. Physical activity can strengthen the muscles that help you breathe and improve your overall wellness.
- Medicines, such as
- Bronchodilators, which relax the muscles around your airways. This helps open your airways and makes breathing easier. Most bronchodilators are taken through an inhaler. In more severe cases, the inhaler may also contain steroids to reduce inflammation.
- Vaccines for the flu and pneumococcal pneumonia, since people with emphysema are at higher risk for serious problems from these diseases
- Antibiotics if you get a bacterial or viral lung infection
- Oxygen therapy, if you have severe emphysema and low levels of oxygen in your blood. Oxygen therapy can help you breathe better. You may need extra oxygen all the time or only at certain times.
- Pulmonary rehabilitation, which is a program that helps improve the well-being of people who have chronic breathing problems. It may include
- An exercise program
- Disease management training
- Nutritional counseling
- Psychological counseling
- Surgery, usually as a last resort for people who have severe symptoms that have not gotten better with medicines. There are surgeries to
- Remove damaged lung tissue
- Remove large air spaces (bullae) that can form when air sacs are destroyed. The bullae can interfere with breathing.
- Do a lung transplant. This is might be an option if you have very severe emphysema.
If you have emphysema, it's important to know when and where to get help for your symptoms. You should get emergency care if you have severe symptoms, such as trouble catching your breath or talking. Call your health care provider if your symptoms are getting worse or if you have signs of an infection, such as a fever.
Can emphysema be prevented?
Since smoking causes most cases of emphysema, the best way to prevent it is to not smoke. It's also important to try to avoid lung irritants such as secondhand smoke, air pollution, chemical fumes, and dusts.
NIH: National Heart, Lung, and Blood Institute
FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
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.
