TY - JOUR
T1 - The effect of medicaid expansion in new york state on use of subspecialty surgical procedures by medicaid beneficiaries and the uninsured
AU - Giladi, Aviram M.
AU - Aliu, Oluseyi
AU - Chung, Kevin C.
N1 - Funding Information:
Data from the New York State Inpatient Database for 1998–2006 were used. This database, which uses diagnosis and procedural codes from the ICD-9-CM, was built as part of the Healthcare Cost and Utilization Project under the Agency for Healthcare Research and Quality. The State Inpatient Database contains all discharge records from acute care hospitals in New York, including outpatient procedures performed in hospital-based ambulatory facilities. 21
PY - 2014/5
Y1 - 2014/5
N2 - Background Understanding the benefits of Medicaid is crucial as states decide whether to expand Medicaid under the Patient Protection and Affordable Care Act. We used the 2001 Medicaid expansion in New York to evaluate changes in use by Medicaid beneficiaries and the uninsured of breast cancer reconstruction, panniculectomy, and lower-extremity trauma management. Methods Data for all patients 19 to 64 years old having undergone the selected procedures between 1998 and 2006 were obtained from the State Inpatient Database. We used an interrupted time series using variance weighted least squares regression to evaluate the effect of Medicaid expansion on the probability that Medicaid beneficiaries or uninsured patients received the procedures. We also determined the predicted use had there been no expansion. New York Census data were used for population-adjusted case-volume calculations. Results Likelihood of Medicaid as the primary payer increased significantly after expansion, 0.34% per quarter (95% CI, 0.28-0.40), without a decrease in uninsured patients receiving these procedures. This resulted in a 7.2% increase in the proportion of Medicaid beneficiaries receiving these procedures, an additional 1.9 Medicaid cases per quarter per 100,000 New York residents. In subgroup analysis, the proportion of Medicaid beneficiaries increased for breast reconstruction (0.28% per quarter; 95% CI, 0.21-0.35) and panniculectomy (0.19% per quarter; 95% CI, 0.1-0.28) without a decrease for the uninsured. Lower-extremity trauma procedures had a decreasing trend in use by uninsured patients with a slight increase for Medicaid beneficiaries (not significant). Conclusions Subspecialty surgeons responded to expansion by increasing volume of procedures for Medicaid beneficiaries. This occurred without decline in care for the uninsured, suggesting that Medicaid expansion resulted in increased access for underserved patients. Although more patients received needed care once they had coverage, subgroup analysis identified persistence of additional barriers to use of certain surgical services.
AB - Background Understanding the benefits of Medicaid is crucial as states decide whether to expand Medicaid under the Patient Protection and Affordable Care Act. We used the 2001 Medicaid expansion in New York to evaluate changes in use by Medicaid beneficiaries and the uninsured of breast cancer reconstruction, panniculectomy, and lower-extremity trauma management. Methods Data for all patients 19 to 64 years old having undergone the selected procedures between 1998 and 2006 were obtained from the State Inpatient Database. We used an interrupted time series using variance weighted least squares regression to evaluate the effect of Medicaid expansion on the probability that Medicaid beneficiaries or uninsured patients received the procedures. We also determined the predicted use had there been no expansion. New York Census data were used for population-adjusted case-volume calculations. Results Likelihood of Medicaid as the primary payer increased significantly after expansion, 0.34% per quarter (95% CI, 0.28-0.40), without a decrease in uninsured patients receiving these procedures. This resulted in a 7.2% increase in the proportion of Medicaid beneficiaries receiving these procedures, an additional 1.9 Medicaid cases per quarter per 100,000 New York residents. In subgroup analysis, the proportion of Medicaid beneficiaries increased for breast reconstruction (0.28% per quarter; 95% CI, 0.21-0.35) and panniculectomy (0.19% per quarter; 95% CI, 0.1-0.28) without a decrease for the uninsured. Lower-extremity trauma procedures had a decreasing trend in use by uninsured patients with a slight increase for Medicaid beneficiaries (not significant). Conclusions Subspecialty surgeons responded to expansion by increasing volume of procedures for Medicaid beneficiaries. This occurred without decline in care for the uninsured, suggesting that Medicaid expansion resulted in increased access for underserved patients. Although more patients received needed care once they had coverage, subgroup analysis identified persistence of additional barriers to use of certain surgical services.
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U2 - 10.1016/j.jamcollsurg.2013.12.048
DO - 10.1016/j.jamcollsurg.2013.12.048
M3 - Article
C2 - 24661853
AN - SCOPUS:84898773996
SN - 1072-7515
VL - 218
SP - 889
EP - 897
JO - Journal of the American College of Surgeons
JF - Journal of the American College of Surgeons
IS - 5
ER -