2026 ICD-10-CM Diagnosis Code G97.2Intracranial hypotension following ventricular shunting

ICD-10-CM Codes›G00–G99›G89-G99›G97

ICD-10-CM G97.2
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G97.2 is a billable ICD-10-CM diagnosis code for intracranial hypotension following ventricular shunting. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as disorder of brain ventricular shunt. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative nervous system complication.

Code Identity

ICD-10-CM Code
G97.2
Billable Status
Yes — Valid for Submission
Code Describes
Intracranial hypotension following ventricular shunting
Short Description
Intracranial hypotension following ventricular shunting
Same as the full description in the CMS dataset.
Parent Code
G97
Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified
This CodeG97.2Intracranial hypotension following ventricular shunting

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder of brain ventricular shunt
  • Intracranial hypotension
  • Intracranial hypotension following ventricular shunting
  • Nervous system complication from surgically implanted device

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code Also

  • any associated diagnoses or complications

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Complication(s) (from) (of)
      • nervous system
        • postprocedural
          • intracranial hypotension
    • Complication(s) (from) (of)
      • surgical procedure (on)
        • intracranial hypotension following ventricular shunting (ventriculostomy)
    • Hypotension(arterial) (constitutional)
      • intracranial
        • following
          • ventricular shunting (ventriculostomy)

Clinical ClassificationClinical

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

CCSR NVS021
Postprocedural or postoperative nervous system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Intracranial Hypotension

    reduction of cerebrospinal fluid pressure characterized clinically by orthostatic headache and occasionally by an abducens nerve palsy; hearing loss; nausea; neck stiffness, and other symptoms. this condition may be spontaneous or secondary to cerebrospinal fluid leak; spinal puncture; neurosurgical procedures; dehydration; uremia; trauma (see also craniocerebral trauma); and other processes. chronic hypotension may be associated with subdural hematomas (see hematoma, subdural) or hygromas. (from semin neurol 1996 mar;16(1):5-10; adams et al., principles of neurology, 6th ed, pp637-8)

Convert G97.2 to ICD-9-CMHistory

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

ICD-9-CM
997.01 Surg complication - cns
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G97.2Overview

Is G97.2 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report intracranial hypotension following ventricular shunting on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of G97.2?

Under the General Equivalence Mappings, intracranial hypotension following ventricular shunting converts to ICD-9-CM 997.01 (surg complication - cns). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.