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ICD-10-CM Code G91.0
Communicating hydrocephalus

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

G91.0 is a billable ICD code used to specify a diagnosis of communicating hydrocephalus. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code G91 is used to code Hydrocephalus

Hydrocephalus (from Greek hydro-, meaning "water", and kephalos, meaning "head") is a rare medical condition in which there is an abnormal accumulation of cerebrospinal fluid (CSF) in the brain. This causes increased intracranial pressure inside the skull and may cause progressive enlargement of the head if it occurs in childhood, potentially causing convulsion, tunnel vision, and mental disability. It was once informally called "Water on the brain."

Specialty: Neurosurgery
MeSH Codes: D006849, D006849, D006849, D006849
ICD 9 Codes: 331.3, 331.4, 741.0, 742.3

Hydrocephalus seen on a CT scan of the brain. The black areas in the middle of the brain are abnormally large and filled with fluid.

Source: Wikipedia

Coding Notes for G91.0 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Secondary normal pressure hydrocephalus

MS-DRG Mapping

  • DRG Group #056-057 - Degenerative nervous system disorders with MCC.
  • DRG Group #056-057 - Degenerative nervous system disorders without MCC.

Related Concepts SNOMET-CT

  • Post-traumatic non-communicating hydrocephalus (disorder)
  • Hydrocephalus ex vacuo (disorder)

ICD-10-CM Alphabetical Index References for 'G91.0 - Communicating hydrocephalus'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G91.0. Click on any term below to browse the alphabetical index.


Communicating hydrocephalus (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 331.3 was previously used, G91.0 is the appropriate modern ICD10 code.

Parent Code: G91 - Hydrocephalus

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/G910