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G91.2 - (Idiopathic) normal pressure hydrocephalus


The ICD 10 Code for (Idiopathic) normal pressure hydrocephalus is listed as G91.2.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: G91.2
Description: (Idiopathic) normal pressure hydrocephalus
  • Normal pressure hydrocephalus NOS
Diagnostic Related Groups
(MS-DRG v30.0)
056 - Degenerative Nervous System Disorders W Mcc
057 - Degenerative Nervous System Disorders W/o Mcc
Chapter Diseases of the nervous system (G00-G99)
Block Other disorders of the nervous system (G89-G99)
Parent G91 - Hydrocephalus
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 331.5 - Idiopathic normal pressure hydrocephalus (INPH)
ICD-10-CM Siblings (same level / similar specificity) of G91.2:
G91.0 - Communicating hydrocephalus
G91.1 - Obstructive hydrocephalus
G91.3 - Post-traumatic hydrocephalus, unspecified
G91.4 - Hydrocephalus in diseases classified elsewhere
G91.8 - Other hydrocephalus
G91.9 - Hydrocephalus, unspecified