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RESULTS The estimated sensitivity of ICD9 codes to identify women with disabilities with deliveries 2009-2012 was 44%; PPV was 98%, improving over time. Although sensitivity was less then 50% for some conditions, PPVs were 87%-100% for all conditions except intellectual disability (67%). Many physical conditions had complete verification and no underreporting. CONCLUSIONS These results are helpful for new studies using historical data comparing outcomes among women with and without these conditions, and to inform interpretation of results