Hospital Report Cards TM Maternity Care and Women's Health Methodology 2007-2008 8
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Exhibit A. Patient Cohorts and Related ICD-9-CM Codes
Patient Definitions
ICD-9-CM Procedure/Diagnosis Codes and Criteria
Maternity Care
Cesarean Section with Single Birth Procedure Codes: 74.0 74.1, 74.2, 74.4, 74.99, excluding patients with
diagnosis codes 651.00 through 651.93, 652.61, 660.51, or V27.2 through
V27.9
Vaginal Delivery with Single Birth
Principal Diagnoses: 650 or 640.0 through 676.9 (where fifth digit is 1 or 2),
excluding patients with diagnosis codes 651.00 through 651.93, 652.61,
660.51, or V27.2 through V27.9; excluding patients with procedure codes: 74.0
through 74.99
Patient-choice C-section
Patients who had a cesarean section (cesarean procedure codes: 74.0 through
74.99), and did not labor (labor diagnosis codes like any of the following: 653*,
660*, 661*, 662*, 652.1*, 659.0*, 659.1*, 656.3*, or 663.0*), and did not have
labor induction (procedure codes 73.0, 73.01, 73.09, 73.1, 73.4), and did not
have a previous cesarean section (previous cesarean section diagnosis code:
654.21), and did not have any of the following diagnosis codes for these twelve
clinical conditions:
·
Malpresentation: 652 through 652.03, 652.2 through 652.43, 652.6
through 652.93
·
Antepartum bleeding or placental abruption: like 641*, like 656.0*
·
Herpes: like 054*, like 647.6*
·
Severe hypertension: eclampsia and severe pre-eclampsia: like
642.5*, like 642.6*
·
Uterine scar unrelated to cesarean delivery: like 654.9*
·
Multiple gestation: like 651*, like 660.5*
·
Macrosomia: like 656.6*
·
Unengaged (high) fetal head: like 652.5*
·
Maternal soft tissue disorder (uterine abnormalities): like any of the
following: 654.0*, 654.1*, 654.4*, 654.5*, 654.6*, 654.7*
·
Other types of hypertension: like 642* (where the fourth digit is not
equal to 5 or 6)
·
Preterm gestation: like 644.2*
·
Congenital fetal CNS anomaly or chromosomal abnormality: like
655.0*, like 655.1*
·
Exclusion criteria: Patients that have a stillborn diagnosis (stillborn
diagnosis codes: V27.1, V27.3, V27.4, V27.6, V27.7, like V32*, like
V35*, like V36*, or between 651.30 and 651.63)
