2027 ICD-10-CM Diagnosis Code G98.0Neurogenic arthritis, not elsewhere classified

ICD-10-CM Codes›G00–G99›G89-G99›G98

ICD-10-CM G98.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G98.0 is a billable ICD-10-CM diagnosis code for neurogenic arthritis, not elsewhere classified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 70 through 72. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurogenic/neuropathic arthropathy and Other nervous system disorders (neither hereditary nor degenerative).

Code Identity

ICD-10-CM Code
G98.0
Billable Status
Yes — Valid for Submission
Code Describes
Neurogenic arthritis, not elsewhere classified
Short Description
Neurogenic arthritis, not elsewhere classified
Same as the full description in the CMS dataset.
Parent Code
G98
Other disorders of nervous system not elsewhere classified

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG98Other disorders of nervous system not elsewhere classified
This CodeG98.0Neurogenic arthritis, not elsewhere classified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G98.0: its own notes plus those printed at G98 and Chapter 6. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From G98 Other disorders of nervous system not elsewhere classified applies to 2 codes
  • nervous system disorder NOS

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Nonsyphilitic neurogenic arthropathy NEC
  • Nonsyphilitic neurogenic spondylopathy NEC

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • spondylopathy (in):
  • syringomyelia and syringobulbia (G95.0)
  • tabes dorsalis (A52.11)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 6 (G00-G99) Diseases of the nervous system applies to 700 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name G98.0, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming G98.0: they are not reported together with it, unless the two conditions are unrelated.

  • M49 Spondylopathies in diseases classified elsewhere
    nonsyphilitic neuropathic spondylopathy NEC (G98.0)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS032
Neurogenic/neuropathic arthropathy
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR NVS020
Other nervous system disorders (neither hereditary nor degenerative)
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Neurologic Diseases

The brain, spinal cord, and nerves make up the nervous system. Together they control all the workings of the body. When something goes wrong with a part of your nervous system, you can have trouble moving, speaking, swallowing, breathing, or learning. You can also have problems with your memory, senses, or mood.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert G98.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
349.89 Cns disorder NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About G98.0Overview

What is the ICD-10 code for neurogenic arthritis, not elsewhere classified?

The ICD-10-CM code for neurogenic arthritis, not elsewhere classified is G98.0 (sometimes written as G980). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is G98.0 (Other disorders of nervous system not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report neurogenic arthritis, not elsewhere classified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does G98.0 group to?

When neurogenic arthritis, not elsewhere classified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 72, 70, 71, with relative weights from 0.7344 to 1.6089 depending on complications. Higher weights mean higher Medicare reimbursement.

Can G98.0 be reported with G95.0?

Not as a rule. The Excludes1 note on G98.0 lists "syringomyelia and syringobulbia (G95.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of G98.0?

Under the General Equivalence Mappings, neurogenic arthritis, not elsewhere classified converts to ICD-9-CM 349.89 (cns disorder NEC). The mapping is approximate, so confirm the match fits the documentation.