ICD-10-CM > P00-P96 > P90-P96 > P94 P94 Disorders of muscle tone of newborn Non-Billable/Non-Specific Codes P94.0Transient neonatal myasthenia gravisP94.1Congenital hypertoniaP94.2Congenital hypotoniaP94.8Other disorders of muscle tone of newbornP94.9Disorder of muscle tone of newborn, unspecified