Table 1 MS-DRG and ICD-9-CM codes used to define each maternal health indicator

Maternal quality indicator

Cesarean delivery rate

MS-DRG: 765, 766

MS-DRG: 765, 766, 767, 768, 774, 775

Abnormal presentation, preterm, fetal death, multiple gestation diagnosis codes: ‘64420','64421','65100','65101','65103','65110','65111','65113', '65120','65121','65123','65130','65131','65133','65140','65141', '65143','65150','65151','65153','65160','65161','65163','65180', '65181','65183','65190','65191','65193','65220','65221','65223', '65230','65231','65233','65240','65241','65243','65260','65261', '65263','65640','65641','65643','66050','66051','66053','66230', '66231','66233','66960','66961','67810','67811','67813','7615', 'V271','V272','V273', 'V274','V275','V276','V277'

Breech procedure codes: '7251', '7252', '7253', '7254'

Primary Cesarean delivery rate

MS-DRG: 765, 766

MS-DRG: 765, 766, 767, 768, 774, 775

Abnormal presentation, preterm, fetal death, multiple gestation diagnoses, or breech procedure(ICD-9-CM codes as the above);

Previous Cesarean delivery diagnosis codes: '65420','65421','65423'

Vaginal Birth After Cesarean, all rate

MS-DRG: 767, 768, 774, 775

MS-DRG: 765, 766, 767, 768, 774, 775 and diagnosis codes: '65420','65421','65423'

N/A

Vaginal Birth After Cesarean, Uncomplicated rate

MS-DRG: 767, 768, 774, 775

MS-DRG: 765, 766, 767, 768, 774, 775 and diagnosis codes: '65420','65421','65423'

Abnormal presentation, preterm, fetal death, multiple gestation diagnoses, or breech procedure(ICD-9-CM code as the above);

Obstetric Trauma Rate - Vaginal Delivery Without Instrument

MS-DRG: 767, 768, 774, 775 and diagnosis code: '66420', '66421', '66424', '66430', '66431', '66434'

MS-DRG: 767, 768, 774, 775

Instrument-assisted delivery procedure codes: '720', '721', '7221', '7229', '7231', '7239','724','7251','7253','726','7271','7279', '728','729'

Obstetric Trauma Rate - Vaginal Delivery With Instrument

MS-DRG: 767, 768, 774, 775 , diagnosis code: '66420', '66421', '66424', '66430', '66431','66434', and procedure codes: '720','721','7221','7229','7231','7239','724', '7251','7253','726','7271','7279','728','729'

MS-DRG: 767, 768, 774, 775 and procedure codes: '720', '721', '7221', '7229', '7231','7239','724','7251','7253','726','7271', '7279', '728','729'

N/A

Obstetric Trauma Rate - Cesarean delivery

MS-DRG: 765, 766 and diagnosis codes: '66420','66421','66424','66430','66431', '66434'

MS-DRG: 765, 766

N/A

Non-complicated deliveries

Ideal Delivery Rate

Diagnosis code not in (664.2, 664.3 665.5 665.4, 664.4, 664.8, 664.9, 665.8, 665, 665.1, 674.1, 666.0, 666.1, 666.2, 666.3, 665.7, 664.5, 670.xx, 038.xx, 658.4, 659.2, 659.3, 674.2, 674.3, 668.xx, 349.xx 671.4, 673.0, 673.1, 673.2, 673.3, 518.xx (except 03, 06, 83, 84, 89), 998.xx, 669.0, 669.1, 669.2, 669.3, 669.4); Procedure codes not in (6831-6849, 6861-6869, 689, 99.0x)

MS-DRG: 765, 766, 767, 768, 774, 775

N/A