Valid for Submission
G91.1 is a billable diagnosis code used to specify a medical diagnosis of obstructive hydrocephalus. The code G91.1 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 G91.1 might also be used to specify conditions or terms like acquired obstructive hydrocephalus, hydrocephalus associated with late onset aqueduct stenosis, obstructive hydrocephalus, postmeningitic hydrocephalus, postmeningitic obstructive hydrocephalus , post-traumatic hydrocephalus, etc.
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 G91.1 are found in the index:
- - Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) - G91.9
- - Stenosis, stenotic (cicatricial) - See Also: Stricture;
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Acquired obstructive hydrocephalus
- Hydrocephalus associated with late onset aqueduct stenosis
- Obstructive hydrocephalus
- Postmeningitic hydrocephalus
- Postmeningitic obstructive hydrocephalus
- Post-traumatic hydrocephalus
- Post-traumatic non-communicating hydrocephalus
- HYDROCEPHALUS-. excessive accumulation of cerebrospinal fluid within the cranium which may be associated with dilation of cerebral ventricles intracranial hypertension; headache; lethargy; urinary incontinence; and ataxia.
Convert G91.1 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code G91.1 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original 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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