SDC Table 1. ICD-9-CM Procedure and Diagnosis Codes Code Description ICD-9-CM Procedure Codes for 85.41 Unilateral Simple Mastectomy 85.42 Bilateral Simple Mastectomy 85.43 Unilateral Extended Simple Mastectomy 85.44 Bilateral Extended Simple Mastectomy 85.45 Unilateral 85.46 Bilateral Radical Mastectomy 85.47 Unilateral Extended Radical Mastectomy 85.48 Bilateral Extended Radical Mastectomy ICD-9-CM Procedure Codes for Reconstruction 85.33 Unilateral mammectomy with immediate breast placement 85.35 Bilateral mammectomy with immediate breast prosthesis placement 85.53 Unilateral breast 85.54 Bilateral breast implant 85.7 Total reconstruction of breast 85.70 Total reconstruction of breast, NOS 85.71 Latissimus dorsi myocutaneous flap 85.72 Transverse rectus abdominis myocutaneous (TRAM) flap, pedicled 85.73 Transverse rectus abdominis myocutaneous (TRAM) flap, free 85.74 Deep inferior epigastric artery perforator (DIEP) flap, free 85.75 Superficial inferior epigastric artery (SIEA) flap, free 85.76 Gluteal artery perforator (GAP) flap, free 85.79 Other total reconstruction of breast 85.82 Split-thickness graft to breast 85.83 Full-thickness graft to breast 85.84 Pedicle graft to breast 85.85 Muscle flap graft to breast 85.86 Transposition of 85.89 Other mammoplasty 85.93 Revision of implant of breast 85.95 Insertion of breast tissue expander 85.96 Removal of breast tissue expander ICD-9-CM Diagnosis Codes for Breast 174 Malignant neoplasm of female breast 174 Nipple and 174.1 Central portion 174.2 Upper-inner quadrant 174.3 Lower-inner quadrant 174.4 Upper-outer quadrant Continued

Table A1 Continued 174.5 Lower-outer quadrant 174.6 Axillary tail 174.8 Other specified sites of female breast 174.9 Breast (female), unspecified 233 Breast 238.3 Neoplasm of uncertain behavior of other and unspecified sites and tissues: breast Code Description ICD-9-CM Diagnosis Codes for 239.3 Neoplasm of unspecified nature: Breast 612 Deformity and disproportion of reconstructed breast 612.0 Deformity of reconstructed breast 612.1 Disproportion of reconstructed breast Nonspecific abnormal findings on radiological and other examination of body structure: 793.8 breast 793.8 Abnormal mammogram, unspecified 793.81 Mammographic microcalcification 793.89 Other abnormal findings on radiological examination of breast 996.54 Due to breast prosthesis: breast capsule (prosthesis), Mammary implant 996.69 Infection and inflammatory reaction due to internal prosthetic device V10.3 Breast: history of conditions classifiable to 174 V16.3 Breast: family history of condition classifiable to 174 V43.82 Organ or tissue replaced by other means: breast V45.71 Acquired absence of breast and nipple V51.0 Postmastectomy 52.4 Fitting and adjusting

SDC Table 2. Logistic Regression Examining the Effect of 2001 NY Medicaid Expansion on Racial and Ethnic Variation in IPBR

OR 95% CI p

African-American 0.88 0.78 – 1.00 0.0557 Hispanic 1.05 0.85 – 1.28 0.6717 Age < 40 1.41 1.29 – 1.54 <.0001 Age 50-59 0.61 0.57 – 0.65 <.0001 Age 60-69 0.35 0.32 – 0.38 <.0001 Age >=70 0.08 0.07 – 0.09 <.0001 1-2 comorbidities 0.87 0.83 – 0.92 <.0001 > 2 comorbidities 0.52 0.47 – 0.58 <.0001 Simple mastectomy 0.91 0.78 – 1.07 0.2626 Year 2002-2006 1.72 1.62 – 1.82 <.0001 African-American * year02_06 0.83 0.71 – 0.97 0.0183 Hispanic * year02_06 0.85 0.67 – 1.09 0.1968 College Graduate 4.37 3.55 – 5.37 <.0001 Low income 0.88 0.82 – 0.95 0.0006 High income 1.48 1.38 – 1.58 <.0001 Medicare 0.51 0.46 – 0.56 <.0001 Medicaid 0.46 0.42 – 0.51 <.0001 No insurance 0.35 0.28 – 0.42 <.0001 Other insurance 0.99 0.80 – 1.24 0.9485 N 39,466 C 0.81 Notes: CI=confidence interval. Source: HCUP New York State Inpatient Data (SID), 1998 to 2000 and 2002 to 2006. SDC Table 3. Characteristics of Medicaid Patients who Underwent Mastectomy, by Race/Ethnicity Year 1998-2000 Year 2002-2006

African- African- White Hispanic White Hispanic American American Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI

N 522 446 226 858 706 534

IPBR 0.15 0.12 - 0.18 0.14 0.10 - 0.17 0.19 0.14 - 0.24 0.27 0.24 - 0.30 0.18 0.15 - 0.21 0.22 0.19 - 0.26

Simple mastectomy 0.97 0.96 - 0.99 0.97 0.96 - 0.99 0.96 0.93 - 0.99 0.98 0.97 - 0.99 0.96 0.95 - 0.98 0.96 0.94 - 0.98

Age < 40 0.09 0.07 - 0.11 0.14 0.11 - 0.18 0.16 0.11 - 0.21 0.13 0.10 - 0.15 0.14 0.11 - 0.17 0.16 0.13 - 0.19

Age 40-49 0.22 0.19 - 0.26 0.28 0.24 - 0.32 0.25 0.20 - 0.31 0.29 0.26 - 0.32 0.28 0.25 - 0.31 0.26 0.22 - 0.30

Age 50-59 0.31 0.27 - 0.35 0.28 0.24 - 0.32 0.32 0.26 - 0.38 0.33 0.30 - 0.36 0.31 0.28 - 0.35 0.32 0.28 - 0.36

Age 60-69 0.22 0.19 - 0.26 0.18 0.15 - 0.22 0.17 0.12 - 0.21 0.19 0.16 - 0.21 0.20 0.17 - 0.23 0.18 0.15 - 0.22

Age >=70 0.15 0.12 - 0.18 0.11 0.08 - 0.14 0.10 0.06 - 0.14 0.06 0.05 - 0.08 0.07 0.05 - 0.09 0.07 0.05 - 0.10

No comorbidity 0.34 0.30 - 0.38 0.27 0.23 - 0.31 0.37 0.30 - 0.43 0.29 0.26 - 0.33 0.26 0.23 - 0.30 0.31 0.27 - 0.35

1-2 comorbidities 0.56 0.51 - 0.60 0.60 0.56 - 0.65 0.47 0.40 - 0.53 0.55 0.52 - 0.59 0.54 0.50 - 0.58 0.55 0.50 - 0.59

> 2 comorbidities 0.10 0.08 - 0.13 0.13 0.10 - 0.16 0.17 0.12 - 0.21 0.15 0.13 - 0.18 0.20 0.17 - 0.23 0.15 0.12 - 0.18

% College graduate 0.33 0.32 - 0.34 0.24 0.22 - 0.25 0.24 0.22 - 0.26 0.33 0.32 - 0.34 0.24 0.23 - 0.24 0.24 0.23 - 0.26

Low income 0.37 0.33 - 0.41 0.62 0.58 - 0.67 0.68 0.62 - 0.74 0.34 0.30 - 0.37 0.61 0.57 - 0.65 0.64 0.60 - 0.68

Middle income 0.51 0.47 - 0.56 0.33 0.29 - 0.37 0.29 0.23 - 0.35 0.52 0.48 - 0.55 0.37 0.33 - 0.40 0.32 0.28 - 0.36

High income 0.12 0.09 - 0.15 0.05 0.03 - 0.07 0.02 0.00 - 0.04 0.15 0.12 - 0.17 0.02 0.01 - 0.04 0.03 0.02 - 0.05

Notes: CI=confidence interval. Source: HCUP New York State Inpatient Data (SID), 1998 to 2000 and 2002 to 2006.

SDC Table 4. Logistic Regression Examining the Effect of 2001 NY Medicaid Expansion on Racial and Ethnic Variation in IPBR for population with Medicaid coverage

OR 95% CI p

Age < 40 1.24 0.96 – 1.6 <.0001 Age 50-59 0.62 0.5 – 0.78 <.0001 Age 60-69 0.24 0.17 – 0.34 0.0100 Age >=70 0.04 0.01 – 0.1 <.0001 1-2 comorbidities 0.77 0.63 – 0.94 0.1680 > 2 comorbidities 0.45 0.32 – 0.64 0.4350 Simple mastectomy 0.70 0.43 – 1.16 0.1950 African-American 0.86 0.58 – 1.26 0.1050 Hispanic 1.33 0.86 – 2.06 <.0001 Year 2002-2006 1.82 1.35 – 2.46 <.0001 African-American * year02_06 0.83 0.52 – 1.32 0.4280 Hispanic * year02_06 0.65 0.39 – 1.08 0.0950 College Graduate 2.88 1.16 – 7.16 0.0230 Low income 0.96 0.77 – 1.21 0.7320 High income 1.72 1.21 – 2.45 0.0030 N 3,159 Notes: CI=confidence interval. Source: HCUP New York State Inpatient Data (SID), 1998 to 2000 and 2002 to 2006