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ICD-9-CM
7. DISEASES OF THE CIRCULATORY SYSTEM (390-459)
HYPERTENSIVE DISEASE (401-405)
405 Secondary hypertension
405 Secondary hypertension
405.0 Secondary hypertension; malignant
405.01-405.09
405.1 Secondary hypertension; benign
405.11-405.19
405.9 Secondary hypertension; unspecified
405.91-405.99