DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

G98 Other disorders of nervous system not elsewhere classified

  • Header · not billable

G98 is not billable. The category heads 2 billable codes in FY2027: the 2 codes directly below it.

Index → code

  • Disorder (of)nervous system → G98.8
  • Disease, diseasednervous system → G98.8
  • Complication(s) (from) (of)nervous system → G98.8

Where it sits

  1. Chapter 6 Diseases of the nervous system (G00-G99)
  2. G89-G99 Other disorders of the nervous system (G89-G99)
  3. G98 Other disorders of nervous system not elsewhere classified
Billable codes
2
Subdivisions
2
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
8

Codes in G98

  1. G98.0
    Neurogenic arthritis, not elsewhere classified
    Billable
    Inclusion terms 2, Excludes1 3

    Inclusion terms

    • Nonsyphilitic neurogenic arthropathy NEC
    • Nonsyphilitic neurogenic spondylopathy NEC

    Excludes1

    • spondylopathy (in):
    • syringomyelia and syringobulbia (G95.0) G95.0
    • tabes dorsalis (A52.11) A52.11
  2. G98.8
    Other disorders of nervous system
    Billable
    Inclusion terms 1

    Inclusion terms

    • Nervous system disorder NOS

Sources of each column.

Instructions

At G98

Includes

  • nervous system disorder NOS

Notes that also apply

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.

Index entries

  • Complication(s) (from) (of)nervous system → G98.8
  • Disease, diseasednervous system → G98.8
  • Disorder (of)nervous system → G98.8
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)neurological disorder NEC → G98.0
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)neuropathic (Charcot)nonsyphilitic NEC → G98.0
  • Arthropathyneuropathic (Charcot)nonsyphilitic NEC → G98.0
  • Disease, diseasednervous systemspecified NEC → G98.8
  • Disorder (of)nervous systemspecified NEC → G98.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy