G31.89

Billable
ChapterG00–G99
Ranksubcategory
Official Description

Other specified degenerative diseases of nervous system

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 6: Diseases of the Nervous System (G00-G99).
General instructions are available for the parent sections:
View CH6 NotesView G31 Notes

Clinical Hierarchy

CH6Diseases of the nervous system (G00-G99)
G30-G32Other degenerative diseases of the nervous system (G30-G32)
G31Other degenerative diseases of nervous system, not elsewhere classified
G31.8Other specified degenerative diseases of nervous system
G31.89Other specified degenerative diseases of nervous system

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G31.89:

categoryG31
Other degenerative diseases of nervous system, not elsewhere classified
View context instructions
chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to G31.89. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

11 raw paths
Degeneration, degenerative8 unique routes
brain (cortical) (progressive)(2 variants)
childhood
specified NEC→G31.89
cystic→G31.89
cortical (cerebellar) (parenchymatous)→G31.89
nervous system(2 variants)
fatty→G31.89
specified NEC→G31.89
spinal (cord)→G31.89(3 variants)
familial NEC→G31.89
fatty→G31.89
Dystrophy, dystrophia1 unique routes
infantile neuraxonal→G31.89
Seitelberger's syndrome (infantile neuraxonal dystrophy)1 unique routes
Direct index entry→G31.89
Syndrome1 unique routes
Seitelberger's→G31.89

MS-DRG Classification

2026 v43.1

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

DRG 056
Degenerative Nervous System Disorders with MCC
DRG 057
Degenerative Nervous System Disorders without MCC

Cross Reference

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