G91.4
BillableHydrocephalus in diseases classified elsewhere
Hydrocephalus in diseases classified elsewhere
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
Code First
The underlying condition must be sequenced before this code
- underlying condition, such as:
- •congenital syphilisA50.4
- •neoplasmC00-D49
- •plasminogen deficiencyE88.02
Related Codes(6)
Also Known As / Clinical Terms(36)
SNOMED CT
- Tuberculosis of central nervous system10706006
- Tuberculosis of brain12677003
- Hydrocephalus ex vacuo14055002
- Hereditary myopathy associated with hydrocephalus53387004
- Hydrocephalus due to and following meningitis230749002
- Postmeningitic hydrocephalus230749002
- Sequelae of meningitis404188001
- Dandy-Walker malformation with hydrocephalus840471002
- Hydrocephalus due to Dandy-Walker malformation840471002
- Hydrocephalus due to tuberculosis of brain860803004
- Tuberculosis hydrocephalus860803004
- Fungal hydrocephalus1163508000
- Hydrocephalus due to mycosis1163508000
- Hydrocephalus due to suppurative infection1177053008
- Pyogenic hydrocephalus1177053008
- Hydrocephalus ex vacuo due to cerebrovascular disease1260337002
- Hydrocephalus ex vacuo due to degenerative brain disorder1260342005
UMLS
Clinical Terms
- Hydrocephalus ex vacuo
- Hydrocephalus due to mycosis
- Pyogenic hydrocephalus
- Tuberculosis of brain
- Fungal hydrocephalus
- Tuberculosis hydrocephalus
- Tuberculosis of central nervous system
- Postmeningitic hydrocephalus
- Hydrocephalus due to tuberculosis of brain
- Dandy-Walker malformation with hydrocephalus
- Hydrocephalus due to suppurative infection
- Hydrocephalus due to Dandy-Walker malformation
- Hydrocephalus ex vacuo due to degenerative brain disorder
- Hereditary myopathy associated with hydrocephalus
- Hydrocephalus ex vacuo due to cerebrovascular disease
- Sequelae of meningitis
- Hydrocephalus due to and following meningitis
Frequently Asked Questions
What is the ICD-10 code for hydrocephalus in diseases classified elsewhere?
The ICD-10-CM code for hydrocephalus in diseases classified elsewhere is G91.4. The full clinical description is "Hydrocephalus in diseases classified elsewhere". G91.4 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code G91.4 mean?
ICD-10-CM code G91.4 represents “Hydrocephalus in diseases classified elsewhere”. 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 G91.4 a billable code?
Yes, G91.4 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G91.4 in?
G91.4 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G91.4?
G91.4 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.-); and 1 more.
What SNOMED CT codes does G91.4 map to?
G91.4 maps to 12 SNOMED CT concepts: 840471002, 1163508000, 53387004, 230749002, 1177053008, and 7 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G91.4?
G91.4 is linked to 1 UMLS Concept Unique Identifier: C2875379. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G91.4 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like hydrocephalus in diseases classified elsewhere 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 G91.4?
There is no direct ICD-11 mapping available for G91.4 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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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.