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G98 ICD-10-CA code: Other disorders of nervous system, not elsewhere classified

G98 is the ICD-10-CA code for “Other disorders of nervous system, not elsewhere classified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

G98

Other disorders of nervous system, not elsewhere classified

Short description: Other disorders nervous system NEC

ICD-10-CA · Canada

Index terms

Entries in CIHI’s alphabetical index that lead to G98. Searching the index by the condition the note names is how coders reach this code.

  • Disorder (of), nervous system
  • Disease, diseased, nervous system
  • Disorder (of), nervous system, specified NEC
  • Disease, diseased, nervous system, specified NEC
  • Complication, complications (from) (of), nervous system

Notes for G98

As CIHI prints them, with any note G98 takes from the headings above it.

Includes

  • Charcot arthropathy† (M14.6*)Nervous system disorder NOS

Excludes

Conditions classified elsewhere.

  • Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 6: Diseases of the nervous system (G00-G99)

Where G98 sits

  1. 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
  2. 2Block G90-G99Other disorders of the nervous system
  3. 3Valid code G98Other disorders of nervous system, not elsewhere classified

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See G98 in the CIHI source

Frequently asked questions

What does ICD-10-CA code G98 mean?

G98 is the ICD-10-CA code for “Other disorders of nervous system, not elsewhere classified” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is G98 in ICD-10-CA?

G98 sits under G90-G99 Other disorders of the nervous system, within Chapter 6: Diseases of the nervous system (G00-G99).

What coding notes apply to G98?

ICD-10-CA lists Includes, Excludes notes for G98, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside G98

G90Disorders of autonomic nervous systemG91HydrocephalusG92Toxic encephalopathyG93Other disorders of brainG94Other disorders of brain in diseases classified elsewhereG95Other diseases of spinal cordG96Other disorders of central nervous systemG97Postprocedural disorders of nervous system, not elsewhere classifiedG99Other disorders of nervous system in diseases classified elsewhere