2021 ICD-10-CM Diagnosis Code G96.81

Intracranial hypotension

    2021 - New Code Non-Billable/Non-Specific Code
  • G96.81 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • ICD-10-CM G96.81 is a new 2021 ICD-10-CM code that became effective on October 1, 2020.
  • This is the American ICD-10-CM version of G96.81 - other international versions of ICD-10 G96.81 may differ.
Code Also
Code Also Help
A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.
  • any associated diagnoses, such as:
  • Brachial amyotrophy (
    ICD-10-CM Diagnosis Code G54.5

    Neuralgic amyotrophy

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Parsonage-Aldren-Turner syndrome
    • Shoulder-girdle neuritis
    Type 1 Excludes
    • neuralgic amyotrophy in diabetes mellitus (E08-E13 with .44)
    G54.5
    )
  • Cerebrospinal fluid leak from spine (
    ICD-10-CM Diagnosis Code G96.02

    Spinal cerebrospinal fluid leak, spontaneous

      2021 - New Code Billable/Specific Code
    Applicable To
    • Spontaneous cerebrospinal fluid leak from spine
    G96.02
    )
  • Cranial nerve disorders in diseases classified elsewhere (
    ICD-10-CM Diagnosis Code G53

    Cranial nerve disorders in diseases classified elsewhere

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
    Code First
    • underlying disease, such as:
    • neoplasm (C00-D49)
    Type 1 Excludes
    • multiple cranial nerve palsy in sarcoidosis (D86.82)
    • multiple cranial nerve palsy in syphilis (A52.15)
    • postherpetic geniculate ganglionitis (B02.21)
    • postherpetic trigeminal neuralgia (B02.22)
    G53
    )
  • Nerve root and compressions in diseases classified elsewhere (
    ICD-10-CM Diagnosis Code G55

    Nerve root and plexus compressions in diseases classified elsewhere

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
    Code First
    • underlying disease, such as:
    • neoplasm (C00-D49)
    Type 1 Excludes
    • nerve root compression (due to) (in) ankylosing spondylitis (M45.-)
    • nerve root compression (due to) (in) dorsopathies (M53.-, M54.-)
    • nerve root compression (due to) (in) intervertebral disc disorders (M50.1.-, M51.1.-)
    • nerve root compression (due to) (in) spondylopathies (M46.-, M48.-)
    • nerve root compression (due to) (in) spondylosis (M47.0-M47.2.-)
    G55
    )
  • Nonpyogenic thrombosis of intracranial venous system (
    ICD-10-CM Diagnosis Code I67.6

    Nonpyogenic thrombosis of intracranial venous system

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Nonpyogenic thrombosis of cerebral vein
    • Nonpyogenic thrombosis of intracranial venous sinus
    Type 1 Excludes
    • nonpyogenic thrombosis of intracranial venous system causing infarction (I63.6)
    I67.6
    )
  • Nontraumatic intracerebral hemorrhage (
    ICD-10-CM Diagnosis Code I61
    • I61 Nontraumatic intracerebral hemorrhage
      • I61.0 Nontraumatic intracerebral hemorrhage in hemi...
      • I61.1 Nontraumatic intracerebral hemorrhage in hemi...
      • I61.2 Nontraumatic intracerebral hemorrhage in hemi...
      • I61.3 Nontraumatic intracerebral hemorrhage in brai...
      • I61.4 Nontraumatic intracerebral hemorrhage in cere...
      • I61.5 Nontraumatic intracerebral hemorrhage, intrav...
      • I61.6 Nontraumatic intracerebral hemorrhage, multip...
      • I61.8 Other nontraumatic intracerebral hemorrhage
      • I61.9 Nontraumatic intracerebral hemorrhage, unspec...
    I61.-
    )
  • Nontraumatic subdural hemorrhage (
    ICD-10-CM Diagnosis Code I62.0

    Nontraumatic subdural hemorrhage

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    I62.0-
    )
  • Other and unspecified cord compression (
    ICD-10-CM Diagnosis Code G95.2

    Other and unspecified cord compression

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    G95.2-
    )
  • Other secondary parkinsonism (
    ICD-10-CM Diagnosis Code G21.8

    Other secondary parkinsonism

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    G21.8
    )
  • Reversible cerebrovascular vasoconstriction syndrome (
    ICD-10-CM Diagnosis Code I67.841

    Reversible cerebrovascular vasoconstriction syndrome

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Call-Fleming syndrome
    Code First
    • underlying condition, if applicable, such as eclampsia (O15.00-O15.9)
    I67.841
    )
  • Spinal cord herniation (
    ICD-10-CM Diagnosis Code G95.89

    Other specified diseases of spinal cord

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Cord bladder NOS
    • Drug-induced myelopathy
    • Radiation-induced myelopathy
    Type 1 Excludes
    G95.89
    )
  • Stroke (
    ICD-10-CM Diagnosis Code I63
    • I63 Cerebral infarction
      • I63.0 Cerebral infarction due to thrombosis of prec...
        • I63.00 Cerebral infarction due to thrombosis of unsp...
        • I63.01 Cerebral infarction due to thrombosis of vert...
          • I63.011 Cerebral infarction due to thrombosis of righ...
          • I63.012 Cerebral infarction due to thrombosis of left...
          • I63.013 Cerebral infarction due to thrombosis of bila...
          • I63.019 Cerebral infarction due to thrombosis of unsp...
        • I63.02 Cerebral infarction due to thrombosis of basi...
        • I63.03 Cerebral infarction due to thrombosis of caro...
          • I63.031 Cerebral infarction due to thrombosis of righ...
          • I63.032 Cerebral infarction due to thrombosis of left...
          • I63.033 Cerebral infarction due to thrombosis of bila...
          • I63.039 Cerebral infarction due to thrombosis of unsp...
        • I63.09 Cerebral infarction due to thrombosis of othe...
      • I63.1 Cerebral infarction due to embolism of precer...
        • I63.10 Cerebral infarction due to embolism of unspec...
        • I63.11 Cerebral infarction due to embolism of verteb...
          • I63.111 Cerebral infarction due to embolism of right ...
          • I63.112 Cerebral infarction due to embolism of left v...
          • I63.113 Cerebral infarction due to embolism of bilate...
          • I63.119 Cerebral infarction due to embolism of unspec...
        • I63.12 Cerebral infarction due to embolism of basila...
        • I63.13 Cerebral infarction due to embolism of caroti...
          • I63.131 Cerebral infarction due to embolism of right ...
          • I63.132 Cerebral infarction due to embolism of left c...
          • I63.133 Cerebral infarction due to embolism of bilate...
          • I63.139 Cerebral infarction due to embolism of unspec...
        • I63.19 Cerebral infarction due to embolism of other ...
      • I63.2 Cerebral infarction due to unspecified occlus...
        • I63.20 Cerebral infarction due to unspecified occlus...
        • I63.21 Cerebral infarction due to unspecified occlus...
          • I63.211 Cerebral infarction due to unspecified occlus...
          • I63.212 Cerebral infarction due to unspecified occlus...
          • I63.213 Cerebral infarction due to unspecified occlus...
          • I63.219 Cerebral infarction due to unspecified occlus...
        • I63.22 Cerebral infarction due to unspecified occlus...
        • I63.23 Cerebral infarction due to unspecified occlus...
          • I63.231 Cerebral infarction due to unspecified occlus...
          • I63.232 Cerebral infarction due to unspecified occlus...
          • I63.233 Cerebral infarction due to unspecified occlus...
          • I63.239 Cerebral infarction due to unspecified occlus...
        • I63.29 Cerebral infarction due to unspecified occlus...
      • I63.3 Cerebral infarction due to thrombosis of cere...
        • I63.30 Cerebral infarction due to thrombosis of unsp...
        • I63.31 Cerebral infarction due to thrombosis of midd...
          • I63.311 Cerebral infarction due to thrombosis of righ...
          • I63.312 Cerebral infarction due to thrombosis of left...
          • I63.313 Cerebral infarction due to thrombosis of bila...
          • I63.319 Cerebral infarction due to thrombosis of unsp...
        • I63.32 Cerebral infarction due to thrombosis of ante...
          • I63.321 Cerebral infarction due to thrombosis of righ...
          • I63.322 Cerebral infarction due to thrombosis of left...
          • I63.323 Cerebral infarction due to thrombosis of bila...
          • I63.329 Cerebral infarction due to thrombosis of unsp...
        • I63.33 Cerebral infarction due to thrombosis of post...
          • I63.331 Cerebral infarction due to thrombosis of righ...
          • I63.332 Cerebral infarction due to thrombosis of left...
          • I63.333 Cerebral infarction due to thrombosis of bila...
          • I63.339 Cerebral infarction due to thrombosis of unsp...
        • I63.34 Cerebral infarction due to thrombosis of cere...
          • I63.341 Cerebral infarction due to thrombosis of righ...
          • I63.342 Cerebral infarction due to thrombosis of left...
          • I63.343 Cerebral infarction due to thrombosis of bila...
          • I63.349 Cerebral infarction due to thrombosis of unsp...
        • I63.39 Cerebral infarction due to thrombosis of othe...
      • I63.4 Cerebral infarction due to embolism of cerebr...
        • I63.40 Cerebral infarction due to embolism of unspec...
        • I63.41 Cerebral infarction due to embolism of middle...
          • I63.411 Cerebral infarction due to embolism of right ...
          • I63.412 Cerebral infarction due to embolism of left m...
          • I63.413 Cerebral infarction due to embolism of bilate...
          • I63.419 Cerebral infarction due to embolism of unspec...
        • I63.42 Cerebral infarction due to embolism of anteri...
          • I63.421 Cerebral infarction due to embolism of right ...
          • I63.422 Cerebral infarction due to embolism of left a...
          • I63.423 Cerebral infarction due to embolism of bilate...
          • I63.429 Cerebral infarction due to embolism of unspec...
        • I63.43 Cerebral infarction due to embolism of poster...
          • I63.431 Cerebral infarction due to embolism of right ...
          • I63.432 Cerebral infarction due to embolism of left p...
          • I63.433 Cerebral infarction due to embolism of bilate...
          • I63.439 Cerebral infarction due to embolism of unspec...
        • I63.44 Cerebral infarction due to embolism of cerebe...
          • I63.441 Cerebral infarction due to embolism of right ...
          • I63.442 Cerebral infarction due to embolism of left c...
          • I63.443 Cerebral infarction due to embolism of bilate...
          • I63.449 Cerebral infarction due to embolism of unspec...
        • I63.49 Cerebral infarction due to embolism of other ...
      • I63.5 Cerebral infarction due to unspecified occlus...
        • I63.50 Cerebral infarction due to unspecified occlus...
        • I63.51 Cerebral infarction due to unspecified occlus...
          • I63.511 Cerebral infarction due to unspecified occlus...
          • I63.512 Cerebral infarction due to unspecified occlus...
          • I63.513 Cerebral infarction due to unspecified occlus...
          • I63.519 Cerebral infarction due to unspecified occlus...
        • I63.52 Cerebral infarction due to unspecified occlus...
          • I63.521 Cerebral infarction due to unspecified occlus...
          • I63.522 Cerebral infarction due to unspecified occlus...
          • I63.523 Cerebral infarction due to unspecified occlus...
          • I63.529 Cerebral infarction due to unspecified occlus...
        • I63.53 Cerebral infarction due to unspecified occlus...
          • I63.531 Cerebral infarction due to unspecified occlus...
          • I63.532 Cerebral infarction due to unspecified occlus...
          • I63.533 Cerebral infarction due to unspecified occlus...
          • I63.539 Cerebral infarction due to unspecified occlus...
        • I63.54 Cerebral infarction due to unspecified occlus...
          • I63.541 Cerebral infarction due to unspecified occlus...
          • I63.542 Cerebral infarction due to unspecified occlus...
          • I63.543 Cerebral infarction due to unspecified occlus...
          • I63.549 Cerebral infarction due to unspecified occlus...
        • I63.59 Cerebral infarction due to unspecified occlus...
      • I63.6 Cerebral infarction due to cerebral venous th...
      • I63.8 Other cerebral infarction
        • I63.81 Other cerebral infarction due to occlusion or...
        • I63.89 Other cerebral infarction
      • I63.9 Cerebral infarction, unspecified
    I63.-
    )
  • Syringomyelia (
    ICD-10-CM Diagnosis Code G95.0

    Syringomyelia and syringobulbia

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    G95.0
    )
The following code(s) above G96.81 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G96.81:
  • G00-G99
    2021 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • 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)
    Diseases of the nervous system
Code History
  • 2021 (effective 10/1/2020): New code
Code annotations containing back-references to G96.81:
  • Code Also: G96.0
    , G96.11
    ICD-10-CM Diagnosis Code G96.0

    Cerebrospinal fluid leak

      2016 2017 2018 2019 2020 2021 - Converted to Parent Code Non-Billable/Non-Specific Code
    Code Also
    • if applicable:
    • intracranial hypotension (G96.81-)
    Type 1 Excludes
    • cerebrospinal fluid leak from spinal puncture (G97.0)
    ICD-10-CM Diagnosis Code G96.11

    Dural tear

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Code Also
    • intracranial hypotension, if applicable (G96.81-)
    Type 1 Excludes
    • accidental puncture or laceration of dura during a procedure (G97.41)
ICD-10-CM Codes Adjacent To G96.81
G96.02 Spinal cerebrospinal fluid leak, spontaneous
G96.08 Other cranial cerebrospinal fluid leak
G96.09 Other spinal cerebrospinal fluid leak
G96.1 Disorders of meninges, not elsewhere classified
G96.11 Dural tear
G96.12 Meningeal adhesions (cerebral) (spinal)
G96.19 Other disorders of meninges, not elsewhere classified
G96.191 Perineural cyst
G96.198 Other disorders of meninges, not elsewhere classified
G96.8 Other specified disorders of central nervous system
G96.81 Intracranial hypotension
G96.810 …… unspecified
G96.811 …… spontaneous
G96.819 Other intracranial hypotension
G96.89 Other specified disorders of central nervous system
G96.9 Disorder of central nervous system, unspecified
G97 Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified
G97.0 Cerebrospinal fluid leak from spinal puncture
G97.1 Other reaction to spinal and lumbar puncture
G97.2 Intracranial hypotension following ventricular shunting
G97.3 Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a procedure

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.