OPINION
T1 Ashley Richman appeals from the district court's August 19, 2009 Order denying her claim for a retroactive child support award against appellee Christopher La-Chance for the time period between August 2003 and December 2006. We affirm.
BACKGROUND
T2 Richman and LaChanee were never married, but they dated and lived together beginning in about 2002. On March 26, 2003, Richman gave birth to a son, PRL. It is uncontested that LaChanee is PRL 's father. The parties separated in August 2008, after which P.R.L. resided primarily with Richman. LaChancee was allowed regular visitation under an informal agreement reached by the patties.
T3 The parties also had an informal child support agreement, although there is now a dispute between the parties as to how much LaChanee actually paid Richman. Richman testified that LaChanee had paid her approximately $200 in 2008, $1000 in 2004, and $1500 in both 2005 and 2006. LaChanee testifies that he paid Richman significantly more: $200 per month from October 2008 until the middle of 2005 and $250 per month thereafter.
T4 The parties' informal custody and support arrangement continued until January 2007, when Richman moved to Arizona. On January 8, 2007, LaChanee filed a Verified Petition for Paternity and Custody Order in Utah district court. LaChanee's petition represented that he and Richman had been sharing custody of P.R.L. and sought a child support award whereby he would pay Rich-man $282 per month. LaChanee also sought a temporary restraining order to prevent *1022 Richman from removing PRL. from the state of Utah, Richman promptly filed an Answer and Counter Petition denying La-Chanee's shared custody claim and seeking an award of sole custody. Paragraph 8 of Richman's Answer and Counter Petition requested that LaChanee "be ordered to pay child support to [Richman], in an amount deemed reasonable by the Court, pursuant to the Uniform Child Support Guidelines" and stated that "[the issue of child support ar-rearages may be determined by further judicial or administrative determination. [Rich-man] is entitled to child support arrearages dating to approximately August 2008." La-Chanee's Answer to Counter-Petition contained a general denial of the allegations contained in Richman's Paragraph 8.
¶ 5 On February 7, 2007, the district court ruled on LaChanee's restraining order motion, set up a temporary joint custody schedule, and ordered LaChance to pay Richman $232 per month in child support during the pendency of the action. On April 16, Rich-man filed a Motion for Temporary Orders, seeking sole custody of P.R.L. and an order that LaChanee "pay child support in an amount that represents the parties' correct gross monthly incomes." LaChanee opposed Richman's motion, and a dispute arose between the parties regarding the amount of time P.R.L. had stayed with each party. A May 9 minute entry indicates that the parties stipulated that child support "shall be adjusted according to the overnights." On July 5, the district court entered an Order on Motion for Temporary Orders determining that Richman had sole custody of P.R.L. for child support purposes and adjusting LaChanee's child support payment to $362.70 per month, based on the parties' incomes. The July 5 order did not address child support arrearag-es.
¶ 6 On December 28, 2007, the parties submitted a stipulation to the district court on child custody and support issues. The stipulation agreed that, based on the parties' incomes, LaChanee's base child support payment should be not less than $494 per month. The stipulation expressly reserved the issue of child support arrearages for future judicial or administrative determination. On March 18, 2008, apparently as a result of the stipulation, the district court entered a Decree of Paternity, Parent-Time, and Child Support setting LaChanee's child support payment at $494 per month and reiterating that "child support arrearages shall be reserved for further adjudication or as determined by an administrative hearing."
17 On June 25, 2008, Richman filed a Motion for Further Orders seeking child support from the date of the parties' separation in August 2003 through December 2006, the month prior to the initiation of this litigation. Specifically, Richman's motion asked for an order "that [LaChanee] owes $494.00 per month for child support from August, 2003 to December, 2007 [sic]," and that La-Chanee "be ordered to pay $15,760.00 in back child support from the time of separation in August 2008 through December, 2006." Richman filed a contemporaneous Motion for Order to Show Cause seeking to compel La-Chanee to pay $3144 in outstanding child support from 2007. On September 29, 2008, the district court ruled on Richman's motions, rejecting ber argument that La-Chanee's 2007 child support obligation was modified by subsequent orders and ordering, "Any claimed issue of child support arrearag-es prior to the time of Petition is reserved for trial."
¶ 8 A hearing on the issue of child support arrearages was finally held on August 3, 2009. Prior to the hearing, neither side submitted briefing advancing any legal argument as to how arrearages should be proven or calculated. Richman, however, submitted exhibits that included income information for both parties from 2008 onward, proposed Child Support Worksheets for the years 2008 to 2006, and a document showing Richman's proposed arrearage calculation based on the difference between the Child Support Worksheets for each year and the amounts she claimed LaChanee had paid.
¶ 9 At the August 3 hearing, the parties' factual disputes appear to have centered largely around two issues: how much parent time LaChanee had exercised during the ar-rearage period and how much LaChanee had paid Richman over that period. Additionally, a dispute arose as to whether Richman's
*1023
entitlement to pre-petition child support was barred by the doctrines of estoppel or laches. In closing arguments, Richman's counsel referred the district court to Department of Human Services ex rel. Parker v. Irizarry,
[Richman's Counsell]: [Clhild support can't be waived. They can't make an agreement to say I don't want child support.... That's something that runs to the child, and the child shouldn't be placed in a negative situation because of that. With child support arrearages to the same extent, unless you reach a very high level and legal acrobatics even to claim this isn't child support we're talking about, but, you know, a debt of child care expenses that really doesn't go to the child.
There isn't a legal justification under statutory framework to not address ar-rearages for that, and that's-anyway, that's the case that addressed that I don't think it-I don't think they meet any of the standards that applies to it and the separate amount. As I say, it's child support expenses. It can't be waived by the parties.... Under the paternity statute, at the time the paternity action was filed, you're allowed to go back four years earlier just to set out what there are [inaudible].
[The Court]: But according to this state, they're back not for child support, but for reimbursement.
[Richman's Counsell: Yes.
[The Court]: Interesting distinction.
[Richman's Counsell: Yes.
The parties presented further argument to the district court regarding their positions on the interplay between reimbursement, estop-pel, and laches, but Richman presented no legal authority for the proposition that the reimbursement analysis as discussed in Irizarry, see
{10 The district court ruled from the bench that the pre-petition sums sought by Richman were in the nature of reimbursement rather than child support, that such sums were recoverable only if Richman could demonstrate an agreement between the parties or unmet need on the part of the child, and that Richman had failed to demonstrate either of those bases for recovery. The district court's written Order, entered on August 18, 2009, reiterated the court's oral conclusions and denied "[Richman's] claim for amounts owing prior to January 2007." Richman initiated an appeal in this court by filing a timely Notice of Appeal on September 17, 2009.
111 On October 7, 2009, despite her initiation of an appeal in this court, Richman filed a Motion to Alter or Amend Judgment Pursuant to Rule 59 in the district court, see generally Utah R. Civ. P. 59, asserting for the first time that Irigarry's reimbursement analysis had been superceded by statute. Specifically, Richman argued that Utah Code section 78B-12-202(4) mandates that pre-pe-tition child support be calculated under the Utah Child Support Act (the Act), see Utah Code Ann. §§ 78B-12-101 to -408 (2008 & Supp.2010). Section 78B-12-202(4) states, "When no prior court order exists, the court shall determine and assess all arrearages based upon the guidelines described in [the Act]." Id. § 78B-12-202(4) (2008).
T12 The district court denied Richman's rule 59 motion on two grounds. First, the district court ruled that the motion, filed some seven weeks after the challenged judgment, was untimely under rule 59. See generally Utah R. Civ. P. 59(e) ("A motion to alter or amend the judgment shall be served not later than 10 days after entry of the judgment."). Second, the district court ruled that Utah Code section 78B-12-202(4) and the remainder of the Act did not apply to Richman's claims because they were in the nature of reimbursement, rather than for unpaid, past due child support. Richman did not file either an original or amended notice of appeal pertaining to the denial of the rule 59 motion, and we proceed under her timely notice of appeal from the August 18 Order.
ISSUES AND STANDARDS OF REVIEW
T18 On appeal, Richman argues that the district court erred by failing to
*1024
calculate and award Richman child support arrearages pursuant to the Act's guidelines, i.e., based on the parties' incomes, and by instead requiring Richman to demonstrate an entitlement to reimbursement under frigar-ry. Richman's argument requires interpretation of the Act and thus presents a question of law that we review for correctness, see Haynes Land & Livestock Co. v. Jacob Family Chalk Creek, LLC,
ANALYSIS
T14 Richman argues that the district court erred when it applied the reiimbursement analysis discussed in Department of Human Services ex rel. Parker v. Irizarry,
115 Generally, a party cannot raise an issue for the first time on appeal. See In re E.R.,
116 Here, Richman did not make a timely argument to the district court that Utah Code section 78B-12-202(4) precluded an Irizarry reimbursement analysis. The record is devoid of any reference to that section until Richman raised it in her untimely rule 59 motion. Furthermore, Richman appears to have invited any error in applying a reimbursement analysis when her counsel responded affirmatively to the district court's observation that "[alecording to this state, they're back not for child support, but for reimbursement." See generally State v. Winfield,
CONCLUSION
T17 Richman argues on appeal that the district court failed to properly calculate and award pre-petition child support. However, she failed to preserve that argument in the district court. Accordingly, Richman's argu *1025 ment is deemed waived and we do not consider it. The district court's August 18, 2009 Order is hereby affirmed.
Notes
. Department of Human Services ex rel. Parker v. Irizarry,