Table 3.

Temporal patterns related to complicating pregnancy

Subcategories	Temporal patterns	Summary of the Pattern
Obesity	278.01 → 649.11, 278.01 → 649.13, 648.01 → 649.11, 278.00 → 649.13, 649.12 → 648.83, 642.93 → 649.13, 659.63 → 649.13, 642.23 → 649.13, 642.03 → 649.13, 649.13 → 642.03	Obesity, especially morbid obesity, complicating pregnancy
Hypertension	796.2 → 642.23, 796.2 → 649.13, 401.1 → 642.03, 401.9 → 642.03, 648.03 → 642.03, 642.03 → 649.13, 642.23 → 649.13, 250.00 → 642.23, 648.03 → 642.23, 796.2 → 642.33, 796.2 → 649.13	Pre-existing hypertension, elevated blood pressure reading, antepartum hypertension complicating pregnancy
Diabetes Mellitus	250.01 → 648.01, 250.00 → 648.01, 250.00 → 648.83, 250.00 → 642.23, 250.00 → 648.03, 648.01 → 649.11, 790.29 → 648.83, 642.03 → 648.03, 648.03 → 642.23, 648.01 → 649.11	Type I and II diabetes with abnormal glucose tolerance complicating pregnancy; antepartum diabetes may cause some suspected fetal abnormality
Drug/opioid Dependence	304 → 648.31, 304 → 648.30, 304.00→ 648.30, 304.00 → 648.33, 304.00 → 648.43, 304.00 → 649.03, 304.01 → 648.31, 304.01 → 648.30, 304.01 → 648.33, 648.31 → 649.01, 648.33 → 647.63	Drug dependence and opioid dependence are related, together complicating pregnancy; drug/opioid dependence is associated with mental disorder
Tobacco	648.31 → 649.01, 305.1 → 648.30, 649.03 → 648.30, 304 → 649.03, 648.33 → 649.03	Tobacco use disorder is associated with drug/opioid dependence; both could complicate pregnancy
Other	309.81 → 648.30	Other conditions such as posttraumatic stress disorder, thyroid dysfunction, urine infection complicating pregnancy, pain
	244.9 → 648.13, 244.9 → 648.91
	599.0 → 646.63