Hydrocephalus - G91
This notation helps users understand the scope of a code G91 category and provides additional information about the conditions or terms that fall under that category.
Category Includes:
- acquired hydrocephalus
Excludes1: It indicates that the conditions described by two codes cannot occur together in the same patient. These codes are mutually exclusive.
Type 1 Excludes:
- Arnold-Chiari syndrome with hydrocephalus (Q07.-)
- congenital hydrocephalus (Q03.-)
- spina bifida with hydrocephalus (Q05.-)
These ranges represents subcategories of Hydrocephalus. The "G91" signifies that these are the diseases within this broad category.