2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Injury And Poisoning 800-999 > Complications Of Surgical And Medical Care, Not Elsewhere Classified 996-999 > Complications Affecting Specified Body System Not Elsewhere Classified 997.* >  2008 ICD-9-CM Diagnosis 997.01
Central nervous system complication On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.
The 2009 version of ICD-9-CM 997.01 can be accessed here. - A reduction in brain oxygen supply. Severe hypoxia is referred to as anoxia, and is a relatively common cause of injury to the central nervous system. Prolonged brain anoxia may lead to BRAIN DEATH or a PERSISTENT VEGETATIVE STATE. Histologically, this condition is characterized by neuronal loss which is most prominent in the HIPPOCAMPUS; GLOBUS PALLIDUS; CEREBELLUM; and inferior olives. (From Adams et al., Principles of Neurology, 6th ed, pp1109-11)
- 997.01 is a specific code that can be used to specify a diagnosis
- 997.01 contains 5 index entries
- View the ICD-9-CM Volume 1 997.* hierarchy
997.01 also known as:- Anoxic brain damage
- Cerebral hypoxia
997.01 excludes: - Cerebrovascular hemorrhage or infarction (997.02)
Index entries containing 997.01:- Anoxia 799.02
- cerebral 348.1
- during or resulting from a procedure
 997.01
Damage- brain 348.9
- anoxic, hypoxic 348.1
- during or resulting from a procedure 997.01
Hypoxia (see also Anoxia) 799.02- cerebral 348.1
- during or resulting from a procedure 997.01
Pseudomeningocele (cerebral) (infective) 349.2- postprocedural 997.01
Syndrome - see also Disease- hyperperfusion 997.01
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