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ICD-10-CM 2027 diagnosis code

G96.81Intracranial hypotension

Not billable — use a more specific code

G96.81 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code last changed in FY2021 (effective October 1, 2020). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About G96.81

G96.81 is the ICD-10-CM diagnosis code for intracranial hypotension. It belongs to category G96 (other disorders of central nervous system), block G89-G99 (other disorders of the nervous system) and chapter 6 (diseases of the nervous system). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within G96.8 (other specified disorders of central nervous system), G96.81 is specifically for intracranial hypotension. Related codes cover other specified disorders of central nervous system (G96.89).

To report this condition, pick the subcode that matches the documentation: G96.810 (unspecified), G96.811 (spontaneous) and G96.819 (hypotension).

It was added in FY2021, effective October 1, 2020.

Specific codes under G96.81

Coding notes

Code alsoTwo codes may be needed; sequencing depends on circumstances
  • 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)

Notes that apply from higher levels

Instructions written at a parent level also apply to G96.81.

Broader instructions also apply from Chapter 6: Diseases of the nervous system.

Codes whose notes reference G96.81

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2021 (effective 10/1/2020): Added
  • No changes since FY2021.

Common questions about G96.81

Is G96.81 billable?

No. G96.81 is a header code. Report one of its more specific subcodes instead.