Index to Diseases and Injuries
Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent)
Index code:G91.9
- aqueduct Sylvius stricture Q03.0
- causing disproportion O33.6
- with obstructed labor O66.3
- communicating G91.0
- congenital (external) (internal) Q03.9
- with spina bifida Q05.4
- cervical Q05.0
- dorsal Q05.1
- lumbar Q05.2
- lumbosacral Q05.2
- sacral Q05.3
- thoracic Q05.1
- thoracolumbar Q05.1
- specified NEC Q03.8
- due to toxoplasmosis (congenital) P37.1
- foramen Magendie block (acquired) G91.1
- congenital Q03.1 — see also Hydrocephalus, congenital
- in (due to)
- infectious disease NEC B89 [G91.4]
- neoplastic disease NEC (see also Neoplasm) G91.4
- parasitic disease B89 [G91.4]
- newborn Q03.9
- with spina bifida — see Spina bifida, with hydrocephalus
- noncommunicating G91.1
- normal pressure G91.2
- secondary G91.0
- obstructive G91.1
- otitic G93.2
- post-traumatic NEC G91.3
- secondary G91.4
- post-traumatic G91.3
- specified NEC G91.8
- syphilitic, congenital A50.49
Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.
Frequently asked questions
What is the ICD-10-CM code for Hydrocephalus?
The ICD-10-CM Alphabetic Index directs "Hydrocephalus" to G91.9. Subterms below it may lead to a more specific code. Always confirm the code in the Tabular List before assigning it.
ICD-10-CM Index to Diseases and Injuries maintained by CDC/NCHS (public domain), from the CMS FY2027 release.