Page:ICD-10-CM (2010).djvu/325

 normal pressure hydrocephalus
 * G91.1 Obstructive hydrocephalus
 * G91.2 (Idiopathic) normal pressure hydrocephalus
 * Normal pressure hydrocephalus NOS
 * G91.3 Post-traumatic hydrocephalus, unspecified
 * G91.4 Hydrocephalus in diseases classified elsewhere
 * Code first underlying condition, such as:
 * congenital syphilis (A50.4-)
 * neoplasm (C00-D48)
 * Excludes1: hydrocephalus due to congenital toxoplasmosis (P37.1)
 * G91.8 Other hydrocephalus
 * G91.9 Hydrocephalus, unspecified

G92 Toxic encephalopathy

 * Toxic encephalitis
 * Toxic metabolic encephalopathy
 * Code first (T51-T65) to identify toxic agent.

G93 Other disorders of brain

 * G93.0 Cerebral cysts
 * Arachnoid cyst
 * Porencephalic cyst, acquired
 * Excludes1: acquired periventricular cysts of newborn (P91.1)
 * congenital cerebral cysts (Q04.6)
 * G93.1 Anoxic brain damage, not elsewhere classified
 * Excludes1: cerebral anoxia due to anesthesia during labor and delivery (O74.3)
 * cerebral anoxia due to anesthesia during the puerperium (O89.2)
 * neonatal anoxia (P28.9)
 * G93.2 Benign intracranial hypertension
 * Excludes1: hypertensive encephalopathy (I67.4)
 * G93.3 Postviral fatigue syndrome
 * Benign myalgic encephalomyelitis
 * Excludes1: chronic fatigue syndrome NOS (R53.82)
 * G93.4 Other and unspecified encephalopathy
 * Excludes1: alcoholic encephalopathy (G31.2)
 * hypertensive encephalopathy (I67.4)
 * toxic (metabolic) encephalopathy (G92)
 * G93.40 Encephalopathy, unspecified
 * G93.41 Metabolic encephalopathy
 * Septic encephalopathy
 * G93.49 Other encephalopathy
 * Encephalopathy NEC
 * G93.5 Compression of brain
 * Arnold-Chiari type 1 compression of brain
 * Compression of brain (stem)
 * Herniation