G91.2
Billable(Idiopathic) normal pressure hydrocephalus
(Idiopathic) normal pressure hydrocephalus
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Normal pressure hydrocephalus NOS
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(65)
SNOMED CT
UMLS
- (Idiopathic) normal pressure hydrocephalusC2047886
- Idiopathic Normal Pressure HydrocephalusC2047886
- Hakim SyndromeC0020258
- Hakim SyndromesC0020258
- Hakim's SyndromeC0020258
- Hakim's SyndromesC0020258
- Hakims SyndromeC0020258
- Hydrocephalus, Normal PressureC0020258
- Hydrocephalus, Normal-PressureC0020258
- Hydrocephalus, normal pressureC0020258
- Low pressure hydrocephalusC0020258
- NPH (Normal Pressure Hydrocephalus)C0020258
- NPH - Normal pressure hydrocephalusC0020258
- NPHs (Normal Pressure Hydrocephalus)C0020258
- Normal Pressure HydrocephalusC0020258
- Normal pressure hydrocephalusC0020258
- Normal pressure hydrocephalus (disorder)C0020258
- Normal pressure hydrocephalus NOSC0020258
- Normal pressure hydrocephalyC0020258
- Normal-pressure hydrocephalusC0020258
- Syndrome, HakimC0020258
- Syndrome, Hakim'sC0020258
- Syndromes, HakimC0020258
- Syndromes, Hakim'sC0020258
- hakim syndromeC0020258
- hydrocephalus normal nph pressureC0020258
- hydrocephalus normal pressureC0020258
- hydrocephalus pressure normalC0020258
- low pressure hydrocephalusC0020258
- normal pressure hydrocephalusC0020258
- normal pressure hydrocephalus (nph)C0020258
- normal pressure hydrocephalyC0020258
- normal-pressure hydrocephalusC0020258
- nphC0020258
Clinical Terms
- hydrocephalus normal nph pressure
- hakim syndrome
- Hydrocephalus, Normal Pressure
- low pressure hydrocephalus
- hydrocephalus pressure normal
- Normal-pressure hydrocephalus
- Normal Pressure Hydrocephalus
- Dementia associated with normal pressure hydrocephalus
- NPH - Normal pressure hydrocephalus
- nph
- Syndrome, Hakim
- hydrocephalus normal pressure
- Hydrocephalus, Normal-Pressure
- Hakims Syndrome
- normal pressure hydrocephalus (nph)
- Idiopathic Normal Pressure Hydrocephalus
- Syndrome, Hakim's
- normal pressure hydrocephaly
- NPH (Normal Pressure Hydrocephalus)
- NPHs (Normal Pressure Hydrocephalus)
- Syndromes, Hakim
- Normal pressure hydrocephalus NOS
- Hakim Syndromes
- Normal pressure hydrocephalus (disorder)
- Syndromes, Hakim's
- Hakim's Syndromes
- Hakim's Syndrome
Frequently Asked Questions
What is the ICD-10 code for (idiopathic) normal pressure hydrocephalus?
The ICD-10-CM code for (idiopathic) normal pressure hydrocephalus is G91.2. The full clinical description is "(Idiopathic) normal pressure hydrocephalus". G91.2 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code G91.2 mean?
ICD-10-CM code G91.2 represents “(Idiopathic) normal pressure 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 G91.2 a billable code?
Yes, G91.2 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G91.2 in?
G91.2 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G91.2?
G91.2 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 G91.2 map to?
G91.2 maps to 2 SNOMED CT concepts: 698625002, 30753002. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G91.2?
G91.2 is linked to 2 UMLS Concept Unique Identifiers: C2047886, C0020258. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G91.2 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like (idiopathic) normal pressure 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 G91.2?
G91.2 maps to the ICD-11 code: 8D64.04 (Normal-pressure hydrocephalus).
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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.