Other disorders of the nervous system (G89-G99)

Browse all the diagnosis codes used for other disorders of the nervous system (g89-g99). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.
  • Diseases of the nervous system (G00–G99)

    • Other disorders of the nervous system (G89-G99)

        • Disorders of autonomic nervous system (G90)

        • G90 Disorders of autonomic nervous system
        • G90.0 Idiopathic peripheral autonomic neuropathy
        • G90.01 Carotid sinus syncope
        • G90.09 Other idiopathic peripheral autonomic neuropathy
        • G90.1 Familial dysautonomia [Riley-Day]
        • G90.2 Horner's syndrome
        • G90.3 Multi-system degeneration of the autonomic nervous system
        • G90.4 Autonomic dysreflexia
        • G90.5 Complex regional pain syndrome I (CRPS I)
        • G90.50 Complex regional pain syndrome I, unspecified
        • G90.51 Complex regional pain syndrome I of upper limb
        • G90.511 Complex regional pain syndrome I of right upper limb
        • G90.512 Complex regional pain syndrome I of left upper limb
        • G90.513 Complex regional pain syndrome I of upper limb, bilateral
        • G90.519 Complex regional pain syndrome I of unspecified upper limb
        • G90.52 Complex regional pain syndrome I of lower limb
        • G90.521 Complex regional pain syndrome I of right lower limb
        • G90.522 Complex regional pain syndrome I of left lower limb
        • G90.523 Complex regional pain syndrome I of lower limb, bilateral
        • G90.529 Complex regional pain syndrome I of unspecified lower limb
        • G90.59 Complex regional pain syndrome I of other specified site
        • G90.8 Other disorders of autonomic nervous system
        • G90.9 Disorder of the autonomic nervous system, unspecified
        • G90.A Postural orthostatic tachycardia syndrome [POTS]
        • G90.B LMNB1-related autosomal dominant leukodystrophy NEW CODE
        • Hydrocephalus (G91)

        • G91 Hydrocephalus
        • G91.0 Communicating hydrocephalus
        • G91.1 Obstructive hydrocephalus
        • G91.2 (Idiopathic) normal pressure hydrocephalus
        • G91.3 Post-traumatic hydrocephalus, unspecified
        • G91.4 Hydrocephalus in diseases classified elsewhere
        • G91.8 Other hydrocephalus
        • G91.9 Hydrocephalus, unspecified
        • Toxic encephalopathy (G92)

        • G92 Toxic encephalopathy
        • G92.0 Immune effector cell-associated neurotoxicity syndrome
        • G92.00 Immune effector cell-associated neurotoxicity syndrome, grade unspecified
        • G92.01 Immune effector cell-associated neurotoxicity syndrome, grade 1
        • G92.02 Immune effector cell-associated neurotoxicity syndrome, grade 2
        • G92.03 Immune effector cell-associated neurotoxicity syndrome, grade 3
        • G92.04 Immune effector cell-associated neurotoxicity syndrome, grade 4
        • G92.05 Immune effector cell-associated neurotoxicity syndrome, grade 5
        • G92.8 Other toxic encephalopathy
        • G92.9 Unspecified toxic encephalopathy
        • Other disorders of brain (G93)

        • G93 Other disorders of brain
        • G93.0 Cerebral cysts
        • G93.1 Anoxic brain damage, not elsewhere classified
        • G93.2 Benign intracranial hypertension
        • G93.3 Postviral and related fatigue syndromes
        • G93.31 Postviral fatigue syndrome
        • G93.32 Myalgic encephalomyelitis/chronic fatigue syndrome
        • G93.39 Other post infection and related fatigue syndromes
        • G93.4 Other and unspecified encephalopathy
        • G93.40 Encephalopathy, unspecified
        • G93.41 Metabolic encephalopathy
        • G93.42 Megaloencephalic leukoencephalopathy with subcortical cysts NEW CODE
        • G93.43 Leukoencephalopathy with calcifications and cysts NEW CODE
        • G93.44 Adult-onset leukodystrophy with axonal spheroids NEW CODE
        • G93.49 Other encephalopathy
        • G93.5 Compression of brain
        • G93.6 Cerebral edema
        • G93.7 Reye's syndrome
        • G93.8 Other specified disorders of brain
        • G93.81 Temporal sclerosis
        • G93.82 Brain death
        • G93.89 Other specified disorders of brain
        • G93.9 Disorder of brain, unspecified
        • Other disorders of central nervous system (G96)

        • G96 Other disorders of central nervous system
        • G96.0 Cerebrospinal fluid leak
        • G96.00 Cerebrospinal fluid leak, unspecified
        • G96.01 Cranial cerebrospinal fluid leak, spontaneous
        • 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 Intracranial hypotension, unspecified
        • G96.811 Intracranial hypotension, spontaneous
        • G96.819 Other intracranial hypotension
        • G96.89 Other specified disorders of central nervous system
        • G96.9 Disorder of central nervous system, unspecified
        • Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified (G97)

        • 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
        • G97.31 Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure
        • G97.32 Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating other procedure
        • G97.4 Accidental puncture and laceration of a nervous system organ or structure during a procedure
        • G97.41 Accidental puncture or laceration of dura during a procedure
        • G97.48 Accidental puncture and laceration of other nervous system organ or structure during a nervous system procedure
        • G97.49 Accidental puncture and laceration of other nervous system organ or structure during other procedure
        • G97.5 Postprocedural hemorrhage of a nervous system organ or structure following a procedure
        • G97.51 Postprocedural hemorrhage of a nervous system organ or structure following a nervous system procedure
        • G97.52 Postprocedural hemorrhage of a nervous system organ or structure following other procedure
        • G97.6 Postprocedural hematoma and seroma of a nervous system organ or structure following a procedure
        • G97.61 Postprocedural hematoma of a nervous system organ or structure following a nervous system procedure
        • G97.62 Postprocedural hematoma of a nervous system organ or structure following other procedure
        • G97.63 Postprocedural seroma of a nervous system organ or structure following a nervous system procedure
        • G97.64 Postprocedural seroma of a nervous system organ or structure following other procedure
        • G97.8 Other intraoperative and postprocedural complications and disorders of nervous system
        • G97.81 Other intraoperative complications of nervous system
        • G97.82 Other postprocedural complications and disorders of nervous system
        • G97.83 Intracranial hypotension following lumbar cerebrospinal fluid shunting
        • G97.84 Intracranial hypotension following other procedure