G91.1 OBSTRUCTIVE HYDROCEPHALUS

Code Information

  • Diagnosis Code: G91.1
  • Short Description: Obstructive hydrocephalus
  • Long Description: Obstructive hydrocephalus
  • Code Version: 2025 ICD-10-CM

The code G91.1 is VALID for claim submission

Code Classification

Synonyms

  • Acquired obstructive hydrocephalus
  • Acquired obstructive hydrocephalus
  • Dementia due to obstructive hydrocephalus
  • Hydrocephalus associated with late onset aqueduct stenosis
  • Hydrocephalus due to and following meningitis
  • Hydrocephalus due to intracranial neoplasm
  • Hydrocephalus due to obstruction of fourth ventricle outflow
  • Hydrocephalus following traumatic injury
  • Obstructive hydrocephalus
  • Obstructive hydrocephalus
  • Obstructive hydrocephalus
  • Obstructive hydrocephalus
  • Obstructive hydrocephalus due to and following meningitis
  • Obstructive hydrocephalus due to entrapment of inferior horn of lateral ventricle
  • Post-traumatic non-communicating hydrocephalus
  • Sequelae of meningitis

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
G91.1 Right Arrow 331.4 Obstructiv hydrocephalus
This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
G91 Hydrocephalus
G91.0 Communicating hydrocephalus
G91.2 (Idiopathic) normal pressure hydrocephalus
G91.3 Post-traumatic hydrocephalus, unspecified
G91.4 Hydrocephalus in diseases classified elsewhere
G91.8 Other hydrocephalus
G91.9 Hydrocephalus, unspecified
This page was last updated on: 10/1/2025
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