Alphabetic Index FY2027

G96.811

Intracranial hypotension, spontaneous

FY2027Chapter 6: Diseases of the nervous system/G89–G99 Other disorders of the nervous system

BillableComplete code, valid to report
Care settingsHome Health Primary · Neuro Rehabilitation

G96.811 (also written G96811) is a billable ICD-10-CM diagnosis code for intracranial hypotension, spontaneous. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 14 codes in category G96 (Other disorders of central nervous system). The Alphabetic Index lists it under 1 entry. Its coding notes include a Code also instruction and 8 Excludes2 entries.

Code also

Two codes may be needed to describe the condition. This note gives no sequencing order.

Inherited from G96.81 Intracranial hypotension
  • any associated diagnoses, such as:
    • Brachial amyotrophy (G54.5)
    • Cerebrospinal fluid leak from spine (G96.02)
    • Cranial nerve disorders in diseases classified elsewhere (G53)
    • Nerve root and compressions in diseases classified elsewhere (G55)
    • Nonpyogenic thrombosis of intracranial venous system (I67.6)
    • Nontraumatic intracerebral hemorrhage (I61.-)
    • Nontraumatic subdural hemorrhage (I62.0-)
    • Other and unspecified cord compression (G95.2-)
    • Other secondary parkinsonism (G21.8)
    • Reversible cerebrovascular vasoconstriction syndrome (I67.841)
    • Spinal cord herniation (G95.89)
    • Stroke (I63.-)
    • Syringomyelia (G95.0)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (8 notes)
Inherited from Chapter 6 Diseases of the nervous system
  • 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)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

Home Health Primary

Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Neuro Rehabilitation clinical group.

Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 1 entry