delivered the Opinion of, the Court.
I.Introduction
In this аction to recover damages for personal injuries, Petitioner Brenda Sperry appeals the court of appeals’ decision holding that section 13-21-101, C.R.S. (2008), entitles a judgment creditor to post-judgment interest from the date judgment is entered until the judgment is satisfied. Relying on the language of the statute both as written and re-written by this court in Rodriguez v. Schutt,
II.Facts and Procedural History
On November'24,1997, Sperry was injured in an automobile accident .caused by Respondent Sherry Field. Sperry brought an action seeking to reсover damages for personal injuries she suffered because of Field’s negligence. She did not request pre-judgment interest in her complaint. After trial, a jury awarded Sperry $387,000 in damages, which included an award of pre-judgment interest. Field appealed the judgment, arguing there were deficiencies in the evidence and asserting that pre-judgment interest should- not have been awarded becausе Sperry did not request it in the complaint. The court of appeals rejected the evidentiary argument, but held the trial court erred by awarding Sperry pre-judgment interest. Both parties petitioned this court for certiorari which was denied on November 13, 2006.
On remand to the trial court, Sperry filed a motion requesting a modified judgment and an award of post-judgment interest pursuant to section 13-21-101. Sperry argued she was entitled to post-judgment interest calculated at the market rate from the date of the accident until the date of satisfaction. Field agreed that Sperry was entitled to post-judgment interest under section 13-21-101; however, she contended the interest should be calculated from the date the original judgment was entered by the trial court, rather than the date of the accident. The triаl court granted Sperry’s motion for post-judgment interest, but awarded it from the date judgment was entered.
On December 15, 2006, Field entered into an agreement with Sperry to settle the undisputed amount, including interest from the date of judgment to the date of satisfaction. Sperry then appealed arguing that, based on the plain language of section 13-21-101, post-judgment interest should have been awarded from thе date the claim accrued. The court of appeals disagreed and affirmed the trial court. This appeal followed.
III.Section 13-21-101
As written, section 13-21-101(1) states:
... if a judgment for money in an action brought to recover damages for personal injuries is appealed by the judgment debt- or, interest, whether pre-judgment or post-judgment, shall be calculated on such sum at the rate set forth in subsections (3) and (4) of this section from the date the action accrued and shall include compounding of interest annually from the date such suit was filed.
Subsection (2)(a) continues, providing:
If a judgment for money in an action brought to recover damages for personal injuries is appealed by a judgment debtor and the judgment is affirmed, interest, as set forth in subsections (3) and (4) of this section, shall be payable from the date the action accrued until satisfaction of the judgment.
Subsection (2)(b) states:
If а judgment for money in an action to recover damages for personal injuries is appealed by a judgment debtor and the judgment is modified or reversed with a direction that a judgment for money be entered in the trial court, interest, as set out in subsections (3) and (4) of this section, shall be payable from the date the action accrued until the judgment is satisfied. This interest shall be payable on the amount of the final judgment.
In Rodriguez v. Schutt, this court held the distinction between judgments which are appealed and judgments which are not appealed in determining the rate of pre-judgment interest is unsupported by a rational basis and violates equal protection.
... if a judgment for money in an action brought to recover damages for personal injuries is appealed by the judgment debt- or, post-judgment interest shall be calculated on such sum at the rate set forth in subsections (3) and (4) of this section from the date the action accrued and shall include compounding of interest annually from the date such suit was filed.
Id. at 929 (emphasis added to show severed language).
Relying on the language of section 13-21-101(1) as written, Spеrry argues the plain language of the statute entitles her to post-judgment interest calculated from the date the claim accrued. She further argues section 13-21-101(1) as re-written by this court in Rodriguez clarifies that she is entitled to “post-judgment” interest from the date the claim accrued. Field argues this is an absurd result because the term “post-judgment’ interest” necessarily refers to interest commencing after judgment hаs been entered. Further, Field contends that Sperry’s claim of post-judgment interest for the period be-' tween the accident date and the judgment date is merely a backhanded way of claiming pre-judgment interest to which she is not entitled because she waived her right to such interest by not requesting it in her complaint.
A. Standard of Review
Statutory interpretation is a question of law subject to de novo review. Klinger v. Adams County Sch. Dist. No. 50,
B. Ambiguity
As written by the General Assembly, subsection 13-21-101(1) states that “interest, whether pre-judgment or post-judgment, shall be calculated ... from the date the action accrued” until satisfaction of the judgment. Personal injury actions accrue on the date “the fact of the injury and its cause arе known or should have been known” to the plaintiff. Jones v. Cox,
In section 5-12-106(l)(a), C.R.S. (2008), addressing interest calculation in non-personal injury contexts, post-judgment interest accrues “from the date of 'entry of judgment in the trial court until satisfaction.” Similarly, section 5-12-106(l)(b) defines post-judgment interest as accruing “from the date judgment was first entered in the trial court until the judgment is satisfied.” Further, Black’s Law Dictionary 1204 (8th ed.2004), defines the prefix “post” to mean “after.”
C. Legislative History
In 1975, the General Assembly amended section 13-21-101 to provide for interest from the date a personal injury suit is filed to the date of satisfaction, thus encompassing for the first time interest from the date of filing until the date of satisfaction. See Ch. 151, sec. 1, § 13-21-101, 1975 Colo. Sess. Laws 569. In 1979, section 13-21-101 was further amended to allow a personal injury plaintiff to claim interest from the date the action accrued instead of from the date the suit was filed. Ch. 55 sec. 2, § 13-21-101, 1979 Colo. Sess. Laws 315. Thus, following the 1979 amendment, assuming a personal injury plaintiff claimed interest in the complaint, she would be entitled to interest, from the date the action accrued to the date of satisfaction of the judgment.
In 1982, section 13-21-101 was amended to its current form providing for a market-determined interest rate when the judgment debtor appeals. The amendment introduced the terms “pre-judgment” and “post-judgment” into the statute to differentiate between the types of interest available to judgment creditors. Rodriguez,
D. Consequences of a Given Construction
Under the construction of section 13-21-101 urged by Sperry, a judgment creditor whose judgment debtor appeals is entitlеd to post-judgment interest calculated from the date the action accrued until satisfaction. Under this construction, a judgment creditor who properly requested pre-judgment interest in her complaint would be entitled to a double payment of prejudgment interest. When a plaintiff has properly requested and is awarded pre-judgment interest, such interest is incorporated into the judgment and becomes part of the judgment itself. See Francis ex rel. Goodridge v. Dahl,
Sperry argues this result is necessary given this court’s decision in Rodriguez. She asserts that, when we severed the language in section 13-21-101(1) addressing pre-judgment interest and altered the statute to state “post-judgment interest shall be calculated ... from the date the action accrued,” the statute was clarified and required the payment of post-judgment interest from the accrual date. However, our alteration of the statutory language in Rodriguez merely amplified the ambiguity already present in the statute as written by the General Assembly. Further, in Rodriguez we held that disparate treatment of judgments that are appealed and judgments that are not appealed in determining the rate of prejudgment interest violates equal protection.
The ambiguity in section 13-21-101(1) predated Rodriguez; however, Rodriguez amplified this ambiguity by removing the word “pre-judgment” and altering the statute so that it stated “post-judgment interest shall be calculated ... from the date the action accrued.” Our attempt to sever purportedly unconstitutional language highlights the problem that occurs when courts sever statutory language rather than strike the entire statute. This court and the United States Supreme Court have held that aрpellate courts may sever unconstitutional portions of a statute. See United States v. Booker,
Here, the Rodriguez court was not addressing when post-judgment interest should accrue under section 13-21-101. Rather, we were concerned with the equal protection issue presented by the statute’s disparate treatment of judgment debtors who appeal and judgment debtors who do not. In severing language to cure the equal protection problem, we unintentionally altered the statute so that it states “post-judgment interest shall be calculated ... from the date the action accrued.” As discussed above, this statement amplified the ambiguity and contradictory nature оf section 13-21-101(1) as written by the General Assembly and, if applied literally, would lead to unintended results. This serves as an example of the errors that can occur when we attempt to rewrite statutory language.
E. Overall Statutory Scheme
The overall purpose of the personal injury interest statute is to eliminate any financial incentive or disincentive to appeal and to ensure that the judgment creditor recеives the time value of his or her money judgment. Rodriguez,
IV. Conclusion
For the foregoing reasons, we conclude that post-judgment interest under section 13-21-101 should be calculated from the judgment date until satisfaction of the judgment. We accordingly affirm the judgment of the court of appeals.
Justice EID concurs, and Justice RICE joins in the concurrence.
The problem presented by this case is one of the court’s own making. In Rodriguez v. Schutt,
The majority mistakenly treats this case like any other case raising a question of statutory interpretation, proclaiming the rewritten statute to be “ambiguous” and subject to various interpretive aids. Maj. op. at 367-68. Then, in order to resolve this “ambiguity,” the majority redrafts even more of the statutory language, changing the words “from the date the action accrued” to “from the date of judgment.” Maj. op. at 370.
The problem presented by this case highlights the fact that the interest statute is in need of legislative attention. Until the legislature acts, however, I believe we should avoid engaging in “interpretive” efforts such as the majority’s that further redraft the statutory language. Instead, I would reach the same result as that reached by the majority on the narrow ground that Sperry did not seek prejudgment interest in her complaint and therefore cannot collect it now. Maj. op. at 369. The language of section 13-21-101(1) states (in a portion not altered by
I am authorized to state that Justice RICE joins in this concurrence.
Notes
. In Rodriguez, this court found section 13 — 21— 101, C.R.S. (2008), to be unambiguous with regard to application of the market-based interest rate following an unsuccessful appeal by the judgment debtor. Rodriguez v. Schutt,
. Under her construction of section 13-21-101, Sperry refers to this interest as "post-appeal interest.” This is an apparent attempt to avoid making the seemingly contradictory argument that "post-judgment” interest should be awarded for a time period before judgment is entered. However, regardless of what this interest is termed, it constitutes interest aсcrued before judgment is entered, and our case law is clear that, to be entitled to such interest, a plaintiff must request it in her complaint. See Clark v. Hicks,
. In this case, we do not consider the propriety of our determination in Rodriguez that the distinction between judgments which are appealed and judgments which are not appealed in determining pre-judgment interest is unconstitutional. Although we are critical of our opinion in Rodriguez because of the alteration of the statute, we do not address the constitutionality issue as it is not now before us.
