ICD-10 Code G35.D – Multiple sclerosis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G35.D – Multiple sclerosis, unspecified
What it is
G35.D identifies multiple sclerosis when the record does not specify a particular subtype or clinical pattern. Use it for a documented diagnosis of MS with no further detail available.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include neurologic deficits that may relapse or persist, such as weakness, sensory changes, balance problems, or visual disturbance.
When to use this code
Use this code when the clinician documents multiple sclerosis but does not identify relapsing-remitting, primary progressive, secondary progressive, or another subtype. It also applies when the note supports MS, but the subtype is not stated. Check documentation if laterality, activity, or course is specified elsewhere.
Do not use for
Do not use this code for demyelinating disease without a confirmed diagnosis of multiple sclerosis. Do not assign it when the record clearly names a different MS subtype or another neurologic disorder.
Coding tip
Code the highest level of specificity documented; if the subtype is missing, G35.D is appropriate.