Short answer · Medically reviewed summary · Last updated: 2026-04-06
The primary ICD-10 code for Multiple Sclerosis is G35, while the historical ICD-9 code used to classify this condition was 340. Understanding Medical Coding for Multiple Sclerosis In clinical practice, ICD (International Classification of Diseases) codes are essential for ensuring that Multiple Sclerosis is accurately documented in your medical records, facilitating proper insurance billing, and allowing researchers to track the prevalence of the disease. While the core diagnosis is represented by G35 in the ICD-10 system, clinicians may also use supplemental codes to specify the clinical course of Multiple Sclerosis, such as whether the patient is experiencing a relapsing-remitting, primary-progressive, or secondary-progressive form of the disease.
2 people with Multiple Sclerosis have shared their first-person experience on this question at DiseaseMaps.
ICD10 code of Multiple Sclerosis and ICD9 code
ICD-10 and ICD-9 codes for Multiple Sclerosis, with classification details for clinicians, coders and patients.
The primary ICD-10 code for Multiple Sclerosis is G35, while the historical ICD-9 code used to classify this condition was 340.
Understanding Medical Coding for Multiple Sclerosis
In clinical practice, ICD (International Classification of Diseases) codes are essential for ensuring that Multiple Sclerosis is accurately documented in your medical records, facilitating proper insurance billing, and allowing researchers to track the prevalence of the disease. While the core diagnosis is represented by G35 in the ICD-10 system, clinicians may also use supplemental codes to specify the clinical course of Multiple Sclerosis, such as whether the patient is experiencing a relapsing-remitting, primary-progressive, or secondary-progressive form of the disease. These codes are not just administrative numbers; they are the foundation of how your healthcare team communicates the complexity of your diagnosis to specialists, pharmacies, and support services.
Why Classification Matters for Patients
Navigating the diagnostic journey of Multiple Sclerosis can be overwhelming, and understanding the administrative side of your care is a small but important way to regain a sense of agency. When you see G35 on your chart, it serves as the formal recognition of your condition, which is often a significant step in accessing disease-modifying therapies (DMTs) and specialized neurological care. For our community members on DiseaseMaps.org, knowing that your condition is tracked under these specific codes helps ensure that data from your personal experience contributes to global research efforts. Whether you are newly diagnosed or have lived with Multiple Sclerosis for decades, these codes help bridge the gap between your individual health journey and the broader clinical understanding of this complex autoimmune disorder.
Medical Disclaimer: This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your neurologist or other qualified health provider with any questions regarding your specific medical condition.
References
- World Health Organization (WHO) - ICD-10 Version: 2019
- NIH Genetic and Rare Diseases Information Center (GARD) - Multiple Sclerosis
- Orphanet: The portal for rare diseases and orphan drugs
Posted May 31, 2017 by Laura 2000
Posted Jun 1, 2017 by Ezequiel 2100
