G99
Non-billableOth disorders of nervous system in diseases classd elswhr
Other disorders of nervous system in diseases classified elsewhere
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Child Codes (3)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(2)
Frequently Asked Questions
What is the ICD-10 code for oth disorders of nervous system in diseases classd elswhr?
The ICD-10-CM code for oth disorders of nervous system in diseases classd elswhr is G99. The full clinical description is "Other disorders of nervous system in diseases classified elsewhere". G99 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G99 mean?
ICD-10-CM code G99 represents “Other disorders of nervous system in diseases classified elsewhere”. It is classified under Chapter 6: Diseases of the Nervous System and is a non-billable header code. Use a more specific child code for billing purposes.
Is G99 a billable code?
No, G99 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under G99.
What chapter is G99 in?
G99 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What are the subcategories under G99?
G99 has 3 child codes, including: G99.0 (Autonomic neuropathy in diseases classified elsewhere), G99.2 (Myelopathy in diseases classified elsewhere), G99.8 (Oth disrd of nervous system in diseases classified elsewhere).
What are the UMLS CUIs for G99?
G99 is linked to 1 UMLS Concept Unique Identifier: C0694480. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G99 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like oth disorders of nervous system in diseases classd elswhr affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of G99?
G99 maps to the ICD-11 code: 8E7Z (Diseases of the nervous system, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.