Convulsions of newborn (P90)
The ICD-10 code P90 is used specifically to identify convulsions occurring in newborns. These neonatal seizures represent abnormal electrical brain activity that can indicate serious underlying conditions during the first weeks of life.
The code covers a broad range of seizure types seen in newborns, such as benign neonatal convulsions, neonatal focal epileptic seizures, and seizures related to withdrawal from substances. It also includes syndromes like epileptic encephalopathy and conditions complicating infections or intracranial hemorrhage. Common synonyms such as "neonatal seizure," "seizure disorder," and "lethal neonatal spasticity" help clarify that P90 captures all these variations under one classification. Medical coders rely on this code to document the specific diagnosis of newborn convulsions, distinguishing them from seizures occurring in older infants or children. Understanding the ICD-10 code for convulsions of newborn facilitates precise reporting, improves communication, and supports appropriate neonatal care management.
```Instructional Notations
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
