ICD-10-CM > G00-G99 > G89-G99 > G92 > G92.8 G92.8 Other toxic encephalopathy Billable/Specific Copy Code Copy Description Applicable To Toxic encephalitisToxic metabolic encephalopathy Code First poisoning due to drug or toxin, if applicable, (T36-T65 with fifth or sixth character 1-4) Use Additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)