8D64.Z
Hydrocephalus, unspecified
Hydrocephalus, unspecified
ICD-10 Equivalents(4)
ICD-10 Equivalents
View full mappingCorresponding ICD-10-CM codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(12)
SNOMED CT ↗
- Acquired hydrocephalus4088009
- Chatter-box syndrome15139001
- Obstructive hydrocephalus230746009
- Isolated fourth ventricle hydrocephalus230747000
- Hydrocephalus following traumatic injury230751003
- Communicating hydrocephalus following traumatic injury410014007
- Communicating hydrocephalus due to and following traumatic haemorrhage735206008
- Acquired hydrocephalus of newborn782432008
- Hydrocephalus following infectious disease1162256002
- Hydrocephalus due to and following infection of central nervous system1177054002
Frequently Asked Questions
What is the ICD-11 code for hydrocephalus, unspecified?
The ICD-11 code for hydrocephalus, unspecified is 8D64.Z. The full clinical description is "Hydrocephalus, unspecified".
What does ICD-11 code 8D64.Z mean?
ICD-11 code 8D64.Z represents “Hydrocephalus, unspecified”. It is classified under Chapter 8: Diseases of the Nervous System.
What chapter is 8D64.Z in?
8D64.Z is in Chapter 8: Diseases of the Nervous System (codes 8A00-8E7Z).
What is the ICD-10 equivalent of ICD-11 code 8D64.Z?
8D64.Z maps to 4 ICD-10 codes: G91 (Hydrocephalus), G91.3 (Post-traumatic hydrocephalus, unspecified), G91.8 (Other hydrocephalus), and 1 more. ICD-10 and ICD-11 do not always have one-to-one mappings — check the mapping type (equivalent, approximate, narrower, or broader) for each result.
What is the difference between ICD-10 and ICD-11?
ICD-11 is the latest revision of the WHO's International Classification of Diseases, succeeding ICD-10. Key differences include: a fully digital-first design, new chapters for sleep-wake disorders, sexual health, and traditional medicine, improved coding for rare diseases, and better integration with electronic health records through extension codes.
What SNOMED CT codes does 8D64.Z map to?
8D64.Z maps to 10 SNOMED CT concepts: 735206008, 410014007, 230751003, 15139001, 1177054002, and 5 more. SNOMED CT is a clinical terminology used in electronic health records.
What UMLS concepts map to ICD-11 code 8D64.Z?
8D64.Z is linked to 2 UMLS Concept Unique Identifiers: C0020255, C0477417. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.