2027 ICD-10-CM Diagnosis Code G96.12Meningeal adhesions (cerebral) (spinal)

ICD-10-CM Codes›G00–G99›G89-G99›G96

ICD-10-CM G96.12
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G96.12 is a billable ICD-10-CM diagnosis code for meningeal adhesions (cerebral) (spinal). 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. Coders also document this condition as adhesion of brain meninges. 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
G96.12
Billable Status
Yes — Valid for Submission
Code Describes
Meningeal adhesions (cerebral) (spinal)
Short Description
Meningeal adhesions (cerebral) (spinal)
Same as the full description in the CMS dataset.
Parent Code
G96.1
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 CodeG96.12Meningeal adhesions (cerebral) (spinal)

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Adhesion of brain meninges
  • Adhesion of meninges
  • Adhesion of spinal cord meninges

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G96.12: 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

Patient EducationClinical

Brain Diseases

Your brain is the control center of your body. It controls your thoughts, memory, speech, and movement. It regulates the function of many organs. It's part of your nervous system, which also includes your spinal cord and peripheral nerves. The nervous system sends signals between your brain and the rest of the body.

Read the full article at MedlinePlus

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

Convert G96.12 to ICD-9-CMHistory

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

ICD-9-CM
349.2 Disorder of meninges 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 G96.12Overview

What is the ICD-10 code for meningeal adhesions (cerebral) (spinal)?

The ICD-10-CM code for meningeal adhesions (cerebral) (spinal) is G96.12 (sometimes written as G9612). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is G96.12 (Disorders of meninges, not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report meningeal adhesions (cerebral) (spinal) on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does G96.12 group to?

When meningeal adhesions (cerebral) (spinal) 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.

What is the ICD-9 equivalent of G96.12?

Under the General Equivalence Mappings, meningeal adhesions (cerebral) (spinal) converts to ICD-9-CM 349.2 (disorder of meninges NEC). The mapping is approximate, so confirm the match fits the documentation.