Iowa Code » Chapter 598B — UNIFORM CHILD-CUSTODY JURISDICTION AND ENFORCEMENT
Iowa Code

Iowa Code § 598B.203 (2026)

Jurisdiction to modify determination

✓ current as of July 2026
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Except as otherwise provided in section 598B.204, a court of this state shall not modify a child-custody determination made by a court of another state unless a court of this state has jurisdiction to make an initial determination under section 598B.201, subsection 1, paragraph “a” or “b”, and either of the following applies:

1. The court of the other state determines it no longer has exclusive, continuing jurisdiction under section 598B.202 or that a court of this state would be a more convenient forum under section 598B.207.\n\nTue Dec 09 22:00:03 2025 Iowa Code 2026, Chapter 598B (16, 0) §598B.203, UNIFORM CHILD-CUSTODY JURISDICTION AND ENFORCEMENT 6\n\n 2. A court of this state or a court of the other state determines that the child, the child’s parents, and any person acting as a parent do not presently reside in the other state. 99 Acts, ch 103, §15 Referred to in §598B.202, 598B.204, 598B.208 \n

Notes of Decisions
Cited in 13 cases (5 in the last 5 years), 2008–2024 · leading case: L.N.S. v. S.W.S., 854 N.W.2d 699 (Iowa Ct. App. 2013).
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L.N.S. v. S.W.S., 854 N.W.2d 699 (Iowa Ct. App. 2013). · cites it 5× “Iowa Code § 598B.203. Iowa has jurisdiction under section 598B.”
White v. Harper, 807 N.W.2d 289 (Iowa Ct. App. 2011). · cites it 4× “Iowa has jurisdiction to modify the Tennessee order if the factors in Iowa Code section 598B.203 are satisfied. Section 598B.”
In Re the Marriage of Hocker, 752 N.W.2d 447 (Iowa Ct. App. 2008). · cites it 2× “Iowa Code § 598B.203 (2005); Cervetti, 497 N.”
Angela Victoria Hullman v. Bill Robert Richards (Iowa Ct. App. 2021). · cites it 8× “[5] Iowa Code § 598B.203. As a preliminary hurdle, section 598B.”
In re the Marriage of Word (Iowa Ct. App. 2024). · cites it 6× “§ 598B.203. As a preliminary hurdle, section 598B.”
In the Matter of the Guardianship of A.B. & B.B., Minor Child., A.B., Father, appellant/cross-appellee, J.K., Guardian, appellee/cross-appellant. (Iowa Ct. App. 2016). · cites it 4× “See Iowa Code § 598B.203; see also L.N.S., 854 N.”
In the Interest of S.P., Minor Child (Iowa Ct. App. 2018). · cites it 4× “, Iowa Code §§ 598B.203 (“Jurisdiction to modify determination”), .”
Cacie Elizabeth Lacroix, N/K/A Cacie Elizabeth Kramper v. Michael Anthony Verdoorn, A/K/A Michael Anthony Barnett, Appeal From & (Iowa Ct. App. 2016). · cites it 3× “201(1)(a), and either (1) “[t]he court of the other state determines it no longer has exclusive, continuing jurisdiction under section 598B.”
Laura C. Lillie, N/K/A/ Laura C. Smiddy v. Mitchell R. Lillie (Iowa Ct. App. 2017). · cites it 3× “§ 598B.203. Iowa is the home state of the children as they have lived in Iowa for more than six months before the petition for modification was filed.”
Tony Deiman v. Melissa Leppert (Iowa Ct. App. 2017). · cites it 2× “2013) (citing Iowa Code § 598B.203). Section 598B.201(1)(a) provides Iowa courts with jurisdiction to make an initial determination where Iowa “is the home state of the child on the date of the commencement of the proceeding .”
In re the Marriage of Cickavage (Iowa Ct. App. 2023). · cites it 2× “Does the only statutory authority to modify a child custody order or any of its provisions exist only in Iowa Code § 598B.203? c. If Iowa Code chapter 598 does not state any authoritative code section permitting child custody modifications, but Iowa Code Chapter 598B does, how…”
In re M.B., Minor Child (Iowa Ct. App. 2023). · cites it 2× “See Iowa Code § 598B.203; Colo. Rev. Stat. Ann.”
Show all 13 citing cases →
— Iowa Code § 598B.203(1) — 1 case
Angela Victoria Hullman v. Bill Robert Richards (Iowa Ct. App. 2021). “[5] Iowa Code § 598B.203. As a preliminary hurdle, section 598B.”
— Iowa Code § 598B.203(2) — 3 cases
In re the Marriage of Word (Iowa Ct. App. 2024). “§ 598B.203. As a preliminary hurdle, section 598B.”
Angela Victoria Hullman v. Bill Robert Richards (Iowa Ct. App. 2021). “[5] Iowa Code § 598B.203. As a preliminary hurdle, section 598B.”
In the Interest of K.L., Minor Child (Iowa Ct. App. 2024).
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