ICD-10-CM > I00-I99 > I10-I1A > I15 I15 Secondary hypertension Non-Billable/Non-Specific Code Also underlying condition Type 1 Excludes postprocedural hypertension (I97.3) Type 2 Excludes secondary hypertension involving vessels of brain (I60-I69)secondary hypertension involving vessels of eye (H35.0-) Codes I15.0Renovascular hypertensionI15.1Hypertension secondary to other renal disordersI15.2Hypertension secondary to endocrine disordersI15.8Other secondary hypertensionI15.9Secondary hypertension, unspecified