ICD-10-CM > R00-R99 > R70-R79 > R74 > R74.0 R74.0 Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH] Non-Billable/Non-Specific Codes R74.01Elevation of levels of liver transaminase levelsR74.02Elevation of levels of lactic acid dehydrogenase [LDH]