2026 ICD-10-CM Diagnosis Code G96.811Intracranial hypotension, spontaneous

ICD-10-CM Codes›G00–G99›G89-G99›G96

ICD-10-CM G96.811
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G96.811 is a billable ICD-10-CM diagnosis code for intracranial hypotension, spontaneous. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as intracranial hypotension. 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
G96.811
Billable Status
Yes — Valid for Submission
Code Describes
Intracranial hypotension, spontaneous
Short Description
Intracranial hypotension, spontaneous
Same as the full description in the CMS dataset.
Parent Code
G96.81
Intracranial hypotension

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG96Other disorders of central nervous system
This CodeG96.811Intracranial hypotension, spontaneous

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Intracranial hypotension
  • Spontaneous intracranial hypotension

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.

    • Hypotension(arterial) (constitutional)
      • intracranial
        • spontaneous

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

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)

Code History & ChangesHistory

Replacement G96.811 replaces the following previously assigned code(s):

  • G96.8 - Other specified disorders of central nervous system
FY 2021AddedAdded to the ICD-10-CM code setEffective October 1, 2020.
FY 2022–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G96.811Overview

Is G96.811 (Intracranial hypotension) a billable code?

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

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.