G91.8
BillableOther hydrocephalus
Other hydrocephalus
Coding Notes
Includes
Conditions included under this code
- acquired hydrocephalus
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
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
Related Codes(6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(20)
SNOMED CT
- Chatter-box syndrome15139001
- Chronic brain-hydrocephalus syndrome15139001
- Cocktail party syndrome15139001
- Obstructive hydrocephalus230746009
- Isolated fourth ventricle hydrocephalus230747000
- Hydrocephalus following infectious disease1162256002
- Post-infectious hydrocephalus1162256002
- Hydrocephalus due to and following infection of central nervous system1177054002
- Postinfectious hydrocephalus1177054002
Clinical Terms
- Hydrocephalus following infectious disease
- Isolated fourth ventricle hydrocephalus
- Obstructive hydrocephalus
- Post-infectious hydrocephalus
- Chronic brain-hydrocephalus syndrome
- Hydrocephalus due to and following infection of central nervous system
- Chatter-box syndrome
- Postinfectious hydrocephalus
- Cocktail party syndrome
Frequently Asked Questions
What is the ICD-10 code for other hydrocephalus?
The ICD-10-CM code for other hydrocephalus is G91.8. The full clinical description is "Other hydrocephalus". G91.8 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code G91.8 mean?
ICD-10-CM code G91.8 represents “Other hydrocephalus”. It is classified under Chapter 6: Diseases of the Nervous System and is a billable/specific code that can be used on a claim.
Is G91.8 a billable code?
Yes, G91.8 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G91.8 in?
G91.8 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G91.8?
G91.8 has Excludes1 notes indicating codes that cannot be used together with it, including: Arnold-Chiari syndrome with hydrocephalus (Q07.-); congenital hydrocephalus (Q03.-); spina bifida with hydrocephalus (Q05.-).
What SNOMED CT codes does G91.8 map to?
G91.8 maps to 5 SNOMED CT concepts: 15139001, 1177054002, 1162256002, 230747000, 230746009. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G91.8?
G91.8 is linked to 1 UMLS Concept Unique Identifier: C0477417. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G91.8 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other hydrocephalus 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 G91.8?
G91.8 maps to the ICD-11 code: 8D64.Z (Hydrocephalus, 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.