2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Hypertensive Disease 401-405 > ICD-9-CM Diagnosis 405 Secondary hypertension 405 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 405.0 Malignant secondary hypertension 405.0 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 405.01 Malignant renovascular hypertension 405.01 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 405.09 Other malignant secondary hypertension 405.09 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 405.1 Benign secondary hypertension 405.1 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 405.11 Benign renovascular hypertension 405.11 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 405.19 Other benign secondary hypertension 405.19 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 405.9 Unspecified secondary hypertension 405.9 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 405.91 Unspecified renovascular hypertension 405.91 is a specific code that can be used to specify a diagnosis 405.91 contains 1 index entry ICD-9-CM Diagnosis 405.99 Other unspecified secondary hypertension 405.99 is a specific code that can be used to specify a diagnosis