FY2026 · April
Effective from
- Code-level rules changed
Relapsing-remitting multiple sclerosis
Billable diagnosis code
CDC/NCHS · FY2026 · Aprildemyelinating disease of central nervous system, unspecified (G37.9)
Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2025-10-01
Latest recorded change · FY2026 · April
Effective from
Relapsing-remitting multiple sclerosis
Billable diagnosis code
CDC/NCHS · FY2026 · April| All editions | Effective from | Code history |
|---|---|---|
| FY2026 | 2025-10-01 | Added |
| FY2026 · April | 2026-04-01 | Code-level rules changed |
| FY2027 | 2026-10-01 | No tabular change |
demyelinating disease of central nervous system, unspecified (G37.9)
Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.
Previous assignment: G35
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| G35.B | Primary progressive multiple sclerosis | Category · further specificity required |
| G35.C | Secondary progressive multiple sclerosis | Category · further specificity required |
| G35.D | Multiple sclerosis, unspecified | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗