405 Secondary hypertension 
405.0 Malignant secondary hypertension 
405.01 Malignant renovascular hypertension convert 405.01 to ICD-10-CM
405.09 Other malignant secondary hypertension convert 405.09 to ICD-10-CM 405.1 Benign secondary hypertension 405.11 Benign renovascular hypertension convert 405.11 to ICD-10-CM 405.19 Other benign secondary hypertension convert 405.19 to ICD-10-CM 405.9 Unspecified secondary hypertension 
405.91 Unspecified renovascular hypertension convert 405.91 to ICD-10-CM 405.99 Other unspecified secondary hypertension convert 405.99 to ICD-10-CM