All ICD10 Codes

G35.B1

Billable
ChapterG00–G99
Ranksubcategory
Official Description

Active primary progressive multiple sclerosis

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 6: Diseases of the Nervous System (G00-G99).

Instructional Notes

Includes
  • Primary progressive multiple sclerosis with evidence of inflammatory disease activity
General instructions are available for the parent sections:
View CH6 Notes

Clinical Hierarchy

BillableHas subcodes
CH6Diseases of the nervous system (G00-G99)
G35-G37Demyelinating diseases of the central nervous system (G35-G37)
G35Multiple sclerosis
G35.BPrimary progressive multiple sclerosis
G35.B1Active primary progressive multiple sclerosisBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G35.B1:

chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

Code History

  • FY 2025: This code replaced G35 (Multiple sclerosis)

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 058
Multiple Sclerosis and Cerebellar Ataxia with MCC
DRG 059
Multiple Sclerosis and Cerebellar Ataxia with CC
DRG 060
Multiple Sclerosis and Cerebellar Ataxia without CC/MCC

Cross Reference

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