ICD-10-CM Code G91
Non-Billable CodeNon-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.
ICD Code G91 is a non-billable code. To code a diagnosis of this type, you must use one of the seven child codes of G91 that describes the diagnosis 'hydrocephalus' in more detail.
- G91 Hydrocephalus NON-BILLABLE
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."
|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.
Coding Notes for G91 Info for medical coders on how to properly use this ICD-10 code
Code Includes Notes:
IncludesIncludes notes further define, or give examples of, conditions included in the section.
- Acquired hydrocephalus
Code Type-1 Excludes:
Type-1 ExcludesType-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
- Arnold-Chiari syndrome with hydrocephalus - instead, use code Q07.-
- Congenital hydrocephalus - instead, use code Q03.-
- Spina bifida with hydrocephalus - instead, use code Q05.-
ICD-10-CM Alphabetical Index References for 'G91 - Hydrocephalus'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G91. Click on any term below to browse the alphabetical index.