Diseases of the nervous system G00-G99

Diseases of the nervous system G00-G99

Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (G00-G99) and the excluded code together.
  • certain conditions originating in the perinatal period (
    ICD-10-CM Diagnosis Code P04

    Newborn affected by noxious substances transmitted via placenta or breast milk

      2016 2017 - Revised Code 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    • nonteratogenic effects of substances transmitted via placenta
    Type 2 Excludes
    • congenital malformations (Q00-Q99)
    • encounter for observation of newborn for suspected diseases and conditions ruled out (Z05.-)
    • neonatal jaundice from excessive hemolysis due to drugs or toxins transmitted from mother (P58.4)
    • newborn in contact with and (suspected) exposures hazardous to health not transmitted via placenta or breast milk (Z77.-)
    ICD-10-CM Diagnosis Code P96

    Other conditions originating in the perinatal period

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • certain infectious and parasitic diseases (A00-B99
    ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    • A00-A09 Intestinal infectious diseases
    • A15-A19 Tuberculosis
    • A20-A28 Certain zoonotic bacterial diseases
    • A30-A49 Other bacterial diseases
    • A50-A64 Infections with a predominantly sexual m...
    • A65-A69 Other spirochetal diseases
    • A70-A74 Other diseases caused by chlamydiae
    • A75-A79 Rickettsioses
    • A80-A89 Viral and prion infections of the centra...
    • A90-A99 Arthropod-borne viral fevers and viral h...
    • B00-B09 Viral infections characterized by skin a...
    • B10-B10 Other human herpesviruses
    • B15-B19 Viral hepatitis
    • B20-B20 Human immunodeficiency virus [HIV] disea...
    • B25-B34 Other viral diseases
    • B35-B49 Mycoses
    • B50-B64 Protozoal diseases
    • B65-B83 Helminthiases
    • B85-B89 Pediculosis, acariasis and other infesta...
    • B90-B94 Sequelae of infectious and parasitic dis...
    • B95-B97 Bacterial and viral infectious agents
    • B99-B99 Other infectious diseases
  • complications of pregnancy, childbirth and the puerperium (O00-O9A
    ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    • O00-O08 Pregnancy with abortive outcome
    • O09-O09 Supervision of high risk pregnancy
    • O10-O16 Edema, proteinuria and hypertensive diso...
    • O20-O29 Other maternal disorders predominantly r...
    • O30-O48 Maternal care related to the fetus and a...
    • O60-O77 Complications of labor and delivery
    • O80-O82 Encounter for delivery
    • O85-O92 Complications predominantly related to t...
    • O94-O9A Other obstetric conditions, not elsewher...
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99
    ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    • Q00-Q07 Congenital malformations of the nervous ...
    • Q10-Q18 Congenital malformations of eye, ear, fa...
    • Q20-Q28 Congenital malformations of the circulat...
    • Q30-Q34 Congenital malformations of the respirat...
    • Q35-Q37 Cleft lip and cleft palate
    • Q38-Q45 Other congenital malformations of the di...
    • Q50-Q56 Congenital malformations of genital orga...
    • Q60-Q64 Congenital malformations of the urinary ...
    • Q65-Q79 Congenital malformations and deformation...
    • Q80-Q89 Other congenital malformations
    • Q90-Q99 Chromosomal abnormalities, not elsewhere...
  • endocrine, nutritional and metabolic diseases (
    ICD-10-CM Diagnosis Code E00

    Congenital iodine-deficiency syndrome

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • subclinical iodine-deficiency hypothyroidism (E02)
    Use Additional
    • code (F70-F79) to identify associated intellectual disabilities.
    ICD-10-CM Diagnosis Code E88

    Other and unspecified metabolic disorders

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • histiocytosis X (chronic) (C96.6)
    Use Additional
    • codes for associated conditions
  • injury, poisoning and certain other consequences of external causes (S00-T88
    ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    • S00-S09 Injuries to the head
    • S10-S19 Injuries to the neck
    • S20-S29 Injuries to the thorax
    • S30-S39 Injuries to the abdomen, lower back, lum...
    • S40-S49 Injuries to the shoulder and upper arm
    • S50-S59 Injuries to the elbow and forearm
    • S60-S69 Injuries to the wrist, hand and fingers
    • S70-S79 Injuries to the hip and thigh
    • S80-S89 Injuries to the knee and lower leg
    • S90-S99 Injuries to the ankle and foot
    • T07-T07 Injuries involving multiple body regions
    • T14-T14 Injury of unspecified body region
    • T15-T19 Effects of foreign body entering through...
    • T20-T25 Burns and corrosions of external body su...
    • T26-T28 Burns and corrosions confined to eye and...
    • T30-T32 Burns and corrosions of multiple and uns...
    • T33-T34 Frostbite
    • T36-T50 Poisoning by, adverse effect of and unde...
    • T51-T65 Toxic effects of substances chiefly nonm...
    • T66-T78 Other and unspecified effects of externa...
    • T79-T79 Certain early complications of trauma
    • T80-T88 Complications of surgical and medical ca...
  • neoplasms (C00-D49
    ICD-10-CM Range C00-D49


    • C00-C14 Malignant neoplasms of lip, oral cavity ...
    • C15-C26 Malignant neoplasms of digestive organs
    • C30-C39 Malignant neoplasms of respiratory and i...
    • C40-C41 Malignant neoplasms of bone and articula...
    • C43-C44 Melanoma and other malignant neoplasms o...
    • C45-C49 Malignant neoplasms of mesothelial and s...
    • C50-C50 Malignant neoplasms of breast
    • C51-C58 Malignant neoplasms of female genital or...
    • C60-C63 Malignant neoplasms of male genital orga...
    • C64-C68 Malignant neoplasms of urinary tract
    • C69-C72 Malignant neoplasms of eye, brain and ot...
    • C73-C75 Malignant neoplasms of thyroid and other...
    • C76-C80 Malignant neoplasms of ill-defined, othe...
    • C7A-C7A Malignant neuroendocrine tumors
    • C7B-C7B Secondary neuroendocrine tumors
    • C81-C96 Malignant neoplasms of lymphoid, hematop...
    • D00-D09 In situ neoplasms
    • D10-D36 Benign neoplasms, except benign neuroend...
    • D37-D48 Neoplasms of uncertain behavior, polycyt...
    • D3A-D3A Benign neuroendocrine tumors
    • D49-D49 Neoplasms of unspecified behavior
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (
    ICD-10-CM Diagnosis Code R00

    Abnormalities of heart beat

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • abnormalities originating in the perinatal period (P29.1-)
    Type 2 Excludes
    • specified arrhythmias (I47-I49)
    ICD-10-CM Diagnosis Code R94

    Abnormal results of function studies

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    • abnormal results of radionuclide [radioisotope] uptake studies
    • abnormal results of scintigraphy
ICD-10-CM Range G00-G09

Inflammatory diseases of the central nervous system

  • G00 Bacterial meningitis, not elsewhere clas...
  • G01 Meningitis in bacterial diseases classif...
  • G02 Meningitis in other infectious and paras...
  • G03 Meningitis due to other and unspecified ...
  • G04 Encephalitis, myelitis and encephalomyel...
  • G05 Encephalitis, myelitis and encephalomyel...
  • G06 Intracranial and intraspinal abscess and...
  • G07 Intracranial and intraspinal abscess and...
  • G08 Intracranial and intraspinal phlebitis a...
  • G09 Sequelae of inflammatory diseases of cen...
ICD-10-CM Range G10-G14

Systemic atrophies primarily affecting the central nervous system

  • G10 Huntington's disease
  • G11 Hereditary ataxia
  • G12 Spinal muscular atrophy and related synd...
  • G13 Systemic atrophies primarily affecting c...
  • G14 Postpolio syndrome
ICD-10-CM Range G20-G26

Extrapyramidal and movement disorders

  • G20 Parkinson's disease
  • G21 Secondary parkinsonism
  • G23 Other degenerative diseases of basal gan...
  • G24 Dystonia
  • G25 Other extrapyramidal and movement disord...
  • G26 Extrapyramidal and movement disorders in...
ICD-10-CM Range G30-G32

Other degenerative diseases of the nervous system

  • G30 Alzheimer's disease
  • G31 Other degenerative diseases of nervous s...
  • G32 Other degenerative disorders of nervous ...
ICD-10-CM Range G35-G37

Demyelinating diseases of the central nervous system

  • G35 Multiple sclerosis
  • G36 Other acute disseminated demyelination
  • G37 Other demyelinating diseases of central ...
ICD-10-CM Range G40-G47

Episodic and paroxysmal disorders

  • G40 Epilepsy and recurrent seizures
  • G43 Migraine
  • G44 Other headache syndromes
  • G45 Transient cerebral ischemic attacks and ...
  • G46 Vascular syndromes of brain in cerebrova...
  • G47 Sleep disorders
ICD-10-CM Range G50-G59

Nerve, nerve root and plexus disorders

Type 1 Excludes
  • current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
  • neuralgia NOS (M79.2)
  • neuritis NOS (M79.2)
  • peripheral neuritis in pregnancy (O26.82-)
  • radiculitis NOS (M54.1-)
  • G50 Disorders of trigeminal nerve
  • G51 Facial nerve disorders
  • G52 Disorders of other cranial nerves
  • G53 Cranial nerve disorders in diseases clas...
  • G54 Nerve root and plexus disorders
  • G55 Nerve root and plexus compressions in di...
  • G56 Mononeuropathies of upper limb
  • G57 Mononeuropathies of lower limb
  • G58 Other mononeuropathies
  • G59 Mononeuropathy in diseases classified el...
ICD-10-CM Range G60-G65

Polyneuropathies and other disorders of the peripheral nervous system

Type 1 Excludes
  • G60 Hereditary and idiopathic neuropathy
  • G61 Inflammatory polyneuropathy
  • G62 Other and unspecified polyneuropathies
  • G63 Polyneuropathy in diseases classified el...
  • G64 Other disorders of peripheral nervous sy...
  • G65 Sequelae of inflammatory and toxic polyn...
ICD-10-CM Range G70-G73

Diseases of myoneural junction and muscle

  • G70 Myasthenia gravis and other myoneural di...
  • G71 Primary disorders of muscles
  • G72 Other and unspecified myopathies
  • G73 Disorders of myoneural junction and musc...
ICD-10-CM Range G80-G83

Cerebral palsy and other paralytic syndromes

  • G80 Cerebral palsy
  • G81 Hemiplegia and hemiparesis
  • G82 Paraplegia (paraparesis) and quadriplegi...
  • G83 Other paralytic syndromes
ICD-10-CM Range G89-G99

Other disorders of the nervous system

  • G89 Pain, not elsewhere classified
  • G90 Disorders of autonomic nervous system
  • G91 Hydrocephalus
  • G92 Toxic encephalopathy
  • G93 Other disorders of brain
  • G94 Other disorders of brain in diseases cla...
  • G95 Other and unspecified diseases of spinal...
  • G96 Other disorders of central nervous syste...
  • G97 Intraoperative and postprocedural compli...
  • G98 Other disorders of nervous system not el...
  • G99 Other disorders of nervous system in dis...