ICD-9-CM Codes for Study Inclusion and Exclusion Criteria

ICD-9-CM Diagnosis Codes
 Primary HTN401x, 796.2
 Malignant HTN4010
 Pregnancy630x–679x, V22x–V24x, V26x, 761x–763x, 767x, 768x, 760.0, 760.1, 760.3
 Portal HTN452x, 570x
 Pulmonary HTN415x– 417x
 Secondary HTN402x– 405x
Common causes of pediatric secondary HTN
 Congenital anomalies753x, 747.1, 758.6
 Diseases of the circulatory system444x, 446x, 447x, 453.3
 Diseases of the genitourinary system580x–594x
 Diseases of the musculoskeletal system and connective tissue710x, 720x
 Diseases of the nervous system and sense organs325x, 326x, 3272, 3240, 3249, 3482
 Endocrine, nutritional, and metabolic diseases; immunity disorders240x–246x, 252x, 253x, 255x, 256.4
 Neoplasms189x, 191x, 193x, 194x, 223x, 225x–227x, 237
 Chronic respiratory disease arising in the perinatal period770.7