2027 ICD-10-CM Diagnosis Code G96.198Other disorders of meninges, not elsewhere classified

ICD-10-CM Codes›G00–G99›G89-G99›G96

ICD-10-CM G96.198
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G96.198 is a billable ICD-10-CM diagnosis code for other disorders of meninges, 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 91 through 93. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other nervous system disorders (neither hereditary nor degenerative).

Code Identity

ICD-10-CM Code
G96.198
Billable Status
Yes — Valid for Submission
Code Describes
Other disorders of meninges, not elsewhere classified
Short Description
Other disorders of meninges, not elsewhere classified
Same as the full description in the CMS dataset.
Parent Code
G96.19
Other disorders of meninges, not elsewhere classified

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG96Other disorders of central nervous system
This CodeG96.198Other disorders of meninges, not elsewhere classified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired meningocele
  • Acquired pseudomeningocele
  • Angiomatosis of meninges
  • Cerebrospinal fluid otorrhea
  • Cerebrospinal fluid otorrhea due to giant arachnoid granulation
  • Cyst of spinal meninges
  • Cyst of spinal subdural space caused by parasite
  • Dural ossification
  • Ependymal cyst
  • Ependymal cyst of spinal cord
  • Ependymal cyst of spinal meninges
  • Giant arachnoid granulation
  • Infection causing cyst of central nervous system
  • Infection causing spinal epidural cyst
  • Infection causing spinal subdural cyst
  • Meningeal melanosis
  • Meningocele of vertex
  • Neurocutaneous melanosis
  • Ossifying pachymeningitis
  • Postoperative meningocele
  • Postoperative pseudomeningocele
  • Pseudomeningocele
  • Structural abnormality of arachnoid mater
  • Structural abnormality of dura mater
  • Structural abnormality of spinal cord meninges
  • Structural abnormality of spinal dura mater
  • Structural abnormality of subarachnoid space
  • Traumatic meningocele

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G96.198: its own notes plus those printed at Chapter 6. A note printed at a category, block or chapter applies to every code under it.

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.

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 NVS020
Other nervous system disorders (neither hereditary nor degenerative)
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement G96.198 replaces the following previously assigned code(s):

  • G96.19 - Other disorders of meninges, not elsewhere classified
FY 2021AddedAdded to the ICD-10-CM code setEffective October 1, 2020.
FY 2022–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About G96.198Overview

What is the ICD-10 code for other disorders of meninges, not elsewhere classified?

The ICD-10-CM code for other disorders of meninges, not elsewhere classified is G96.198 (sometimes written as G96198). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is G96.198 (Other disorders of meninges, not elsewhere classified) a billable code?

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

What MS-DRG does G96.198 group to?

When other disorders of meninges, not elsewhere classified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 91, 92, 93, with relative weights from 0.7783 to 1.7050 depending on complications. Higher weights mean higher Medicare reimbursement.