Supplemental Table 1.

ICD codes used for disease definitions

	ICD-8 codes (1973–1986)	ICD-9 codes (1987–1996)	ICD-10 codes (1997–2013)
Any pre-existing chronic/end-stage kidney disease, congenital or genetic causes of renal disease (for exclusion)	403–404, 580–589, 753	403–404, 580–589, 753, V42A, V45B, V56A, V56W	N00-N08, N10-N19, P960, Q271, Q272, Q60-Q63, Q878, Z49, Z992, Z940, T861
Chronic kidney disease (outcome)	403–404, 581–583, 585–588	403–404, 581–583, 585–588, V42A, V45B, V56A, V56W	N01-N06, N08, N11-N13, N15–16, N18–19, Z49, Z992, Z940, T861
End-stage kidney disease (outcome)	None	V42A, V45B, V56A, V56W	N185, Z49, Z992, Z940, T861
Cardiovascular disease	393–398 410–436	393–398 410–436	I16-I64 G45
Hypertension	401–405	401–405	I10-I15
Diabetes (type 1 or type 2)	250	250	E10-E14
Systemic lupus erythematosus	73410	710A	M32
Systemic sclerosis	73400–73409	710B	M34
Hemoglobinopathies	282–283	282–283	D56-D59
Coagulopathies	None	None	D68
Preeclampsia	63700, 63703, 63704, 63709, 63710, 63719, 63790, 63799	642E, 642F, 642G	O140, O141, O141A, O141B, O141C, O141X, O142, O149, O150, O151, O152, O159
Gestational diabetes	None	648W	O244
Congenital malformations	740–759	740–759	Q00-Q99

ICD, International Classification of Diseases.

Barrett et al. Stillbirth is associated with increased risk of long-term maternal renal disease: a nationwide cohort study. Am J Obstet Gynecol 2020.