Healthcare Insights
Top 10 neurology-related diagnosis codes
There are thousands of ICD-10 codes associated with neurology diagnoses. A massive variety of devices and pharmaceuticals are used to treat various neurological or central nervous system conditions.
Neurological disorders can lead to disability and hospitalization, especially for aging individuals. Age plays a role in the increasing frequency and severity of neurological diseases, and it can also contribute to the progression of an existing disease.
Using 2023 calendar year data from the Definitive Healthcare Atlas All-Payor Claims dataset, we put together a list of the top neurology or central nervous system related diagnosis ICD-10 codes.
| Rank | ICD-10 code | ICD-10 description | % total diagnoses | Explore dataset |
|---|---|---|---|---|
| 1 | G4733 | Obstructive sleep apnea (adult) (pediatric) | 5.20% | Explore |
| 2 | G35 | Multiple sclerosis | 4.70% | Explore |
| 3 | G20 | Parkinson's disease | 3.90% | Explore |
| 4 | G40909 | Epilepsy, unspecified, not intractable, without status epilepticus | 3.40% | Explore |
| 5 | G629 | Polyneuropathy, unspecified | 3.20% | Explore |
| 6 | G43709 | Chronic migraine without aura, not intractable, without status migrainosus | 2.80% | Explore |
| 7 | G43009 | Migraine without aura, not intractable, without status migrainosus | 2.70% | Explore |
| 8 | G3184 | Mild cognitive impairment of uncertain or unknown etiology | 2.60% | Explore |
| 9 | G43719 | Chronic migraine without aura, intractable, without status migrainosus | 2.50% | Explore |
| 10 | G9340 | Encephalopathy, unspecified | 2.40% | Explore |
Fig. 1 Data from Definitive Healthcare Atlas All-Payor Claims dataset for calendar year 2023. Medical claims data is sourced from multiple medical claims clearinghouses in the United States and is updated monthly. Accessed April 2024.
What are the most common neurological disorders?
In 2023, obstructive sleep apnea was reported more than any other neurological diagnosis with 5.2% of total diagnoses. Several studies have demonstrated a relationship between obstructive sleep apnea and neurological disorders like stroke, epilepsy, and even headaches. Treating sleep apnea and other sleep disorders usually begins with a sleep study.
Multiple sclerosis (MS) had the second-highest prevalence of diagnoses in this grouping, with 4.7% of diagnoses. MS is a potentially disabling disease of the brain and spinal cord (central nervous system). This condition causes the immune system to attack the protective sheath (myelin) that covers nerve fibers causes inflammation and lesions, making it difficult for the brain to send signals to the rest of the body. Eventually, the disease can cause permanent damage or deterioration of the nerves.
Parkinson’s disease ranked as the third most common disorder diagnosis in 2023. Parkinson’s disease is a progressive nervous system disorder that affects movement. Symptoms start gradually, sometimes starting with a barely noticeable tremor in just one hand, but can progress to full-body tremors, stiffness, or slowing of movement.
How does the central nervous system work?
The nervous system coordinates the body’s actions and sensory information by transmitting signals to and from different parts of the body. The nervous system detects environmental changes that impact the body, then works in tandem with the endocrine system to respond to these events.
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