ICD-10-CM Code G91.1
Obstructive hydrocephalus
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.G91.1 is a billable ICD code used to specify a diagnosis of obstructive 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.
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
- Acquired obstructive hydrocephalus (disorder)
ICD-10-CM Alphabetical Index References for 'G91.1 - Obstructive hydrocephalus'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G91.1. Click on any term below to browse the alphabetical index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code G91.1 and a single ICD9 code, 331.4 is an approximate match for comparison and conversion purposes.
Parent Code: G91 - Hydrocephalus