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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Obstet Gynecol. 2017 Jan;129(1):91–100. doi: 10.1097/AOG.0000000000001810

Figure 1.

Figure 1

Maternal mortality ratios and 95% confidence intervals (CI) in the United States, 1993–2014, including and excluding late maternal deaths (identified by International Classification of Diseases, 10th Revision [ICD-10] codes O96 and O97) (A), and maternal mortality ratios and 95% CIs in the United States, 1993–2014, including and excluding late maternal deaths (O96 and O97) and excluding four new ICD-10 codes (O26.8, O96, O97, and O99) (B). The year when the ICD-10 coding system and the standard pregnancy checkbox on death certificates were introduced are shown in A.