Table 1.

Comorbidity codes for risk adjustment

Comorbidities	Codes
Congenital Anomalies
GI	560.2, 750.3, 750.4, 750.5, 750.7, 750.8, 750.9, 751.0, 751.1, 751.2, 751.3, 751.4, 751.5, 751.60, 751.61, 751.69, 751.7, 751.8, 751.9, 756.70, 756.79, 777.1 and Birth Certificate
GU	753.0, 753.10, 753.12, 753.14, 753.15, 753.19, 753.2x, 753.3, 753.4, 753.6, 753.7, 753.8, 753.9, 756.71 and Birth Certificate
CNS	741.0x, 741.9x, 742.0, 742.1, 742.2, 742.3, 742.4, 742.59, 742.8, 742.9 and Birth Certificate
Pulmonary	519.4, 553.3, 748.3, 748.4, 748.6x, 748.8, 748.9, 750.6, 756.6 and Birth Certificate
Cardio	424.0, 424.1, 425.1, 425.3, 745.10, 745.11, 745.12, 745.19, 745.2, 745.3, 745.0, 745.60, 745.61, 745.69, 746.01, 746.09, 746.1, 746.2, 746.3, 746.4, 746.5, 746.6, 746.7, 746.81, 746.82, 746.83, 746.84, 746.85, 746.87, 746.89, 746.9, 747.1x, 747.21, 747.22, 747.29, 747.4x and Birth Certificate
Skeletal	756.50, 756.51, 756.55, 756.56, 756.59 and Birth Certificate
Chromosomes	758.3, 758.5, 758.89, 758.9, 759.4, 759.7, 759.89, 759.9 and Birth Certificate
Maternal Comorbidities
Disorders of Placentation	641.0x, 641.1x, 641.2x
Chronic Hypertension	642.0x, 642.1x, 642.2x
Cord Abnormality	663.0x, 663.1x, 663.5x
Preterm Labor	644.0x, 644.2x
PROM	658.1x, 658.2x
Chorioamnionitis	658.4x, 659.2x, 659.3x
GU Tract Infection	646.6x
PIH	642.4x 642.5x, 642.7x
Oligohydramnios	658.0x
Amniocentesis	75.1 and Birth Certificate
Cord Prolapse	663.0x, 762.4 and Birth Certificate
Blood Transfusion	99.0, 99.00, 99.02, 99.03, 99.04
Lupus	710.0
Other Collagen Vascular	710.1 710.2 710.3 710.4 710.5 710.8 710.9
Rheumatoid Arthritis	714.x