Valid for Submission
G91.2 is a billable diagnosis code used to specify a medical diagnosis of (idiopathic) normal pressure hydrocephalus. The code G91.2 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code G91.2 might also be used to specify conditions or terms like dementia associated with normal pressure hydrocephalus or normal pressure hydrocephalus.
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code G91.2:
Inclusion TermsInclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Normal pressure hydrocephalus NOS
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code G91.2 are found in the index:
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Dementia associated with normal pressure hydrocephalus
- Normal pressure hydrocephalus
- HYDROCEPHALUS NORMAL PRESSURE-. a form of compensated hydrocephalus characterized clinically by a slowly progressive gait disorder see gait disorders neurologic progressive intellectual decline and urinary incontinence. spinal fluid pressure tends to be in the high normal range. this condition may result from processes which interfere with the absorption of csf including subarachnoid hemorrhage chronic meningitis and other conditions. from adams et al. principles of neurology 6th ed pp631 3
Convert G91.2 to ICD-9 Code
Information for Patients
Also called: Water on the brain
Hydrocephalus is the buildup of too much cerebrospinal fluid in the brain. Normally, this fluid cushions your brain. When you have too much, though, it puts harmful pressure on your brain.
Hydrocephalus can be congenital, or present at birth. Causes include genetic problems and problems with how the fetus develops. An unusually large head is the main sign of congenital hydrocephalus.
Hydrocephalus can also happen after birth. This is called acquired hydrocephalus. It can occur at any age. Causes can include head injuries, strokes, infections, tumors, and bleeding in the brain. Symptoms include
- Vomiting and nausea
- Blurry vision
- Balance problems
- Bladder control problems
- Thinking and memory problems
Hydrocephalus can permanently damage the brain, causing problems with physical and mental development. If untreated, it is usually fatal. With treatment, many people lead normal lives with few limitations. Treatment usually involves surgery to insert a shunt. A shunt is a flexible but sturdy plastic tube. The shunt moves the cerebrospinal fluid to another area of the body where it can be absorbed. Medicine and rehabilitation therapy can also help.
NIH: National Institute of Neurological Disorders and Stroke
- Brain surgery (Medical Encyclopedia)
- Hydrocephalus (Medical Encyclopedia)
- Normal pressure hydrocephalus (NPH) (Medical Encyclopedia)
- Ventriculoperitoneal shunt (Medical Encyclopedia)
- Ventriculoperitoneal shunt - discharge (Medical Encyclopedia)
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