OPALA, J.
¶ 1 The court’s certiorari grant stands confined to the single issue whether the Court of Civil Appeals (COCA) erred in its construction of the independent medical examiner (IME) statutory regime, 85 O.S.2001 § 17,
by elevating an IME medical assessment of compensable harm to a higher rank of probative value (for
prima facie
effect) than all other admissible expert opinions. We answer in the affirmative and retransfer the case to COCA for its reconsideration of all issues in a manner consistent with today’s pronouncement.
I
THE ANATOMY OF LITIGATION
¶2 Claimant’s (Yocum or claimant) com-pensable condition stood adjudicated in August 2001 as that of a temporarily totally disabled person from an injury to her neck, back and left shoulder (on 2 February 2000) while working for Greenbriar Nursing Home (Greenbriar or employer). She was found to be in need of further medical treatment. Claimant’s physician recommended she undergo a psychological evaluation as well as procedures for pain management. Employer’s medical expert reached a contrary conclusion. According to his report (dated 11 March 2002) claimant was neither in need of medical care and maintenance nor of treatment for psychological overlay. The report states that claimant’s complaints of anxiety are caused by a pre-existing condition, not by the February 2 injury. The trial judge then ordered four independent medical evaluations to assess claimant’s need, if any, for further treatment. These four reports recommended pain management and psychological overlay treatment. On consideration of the entire medical evidence, the trial judge denied the request for treatment, resting his decision on the ground he was “not persuaded ... that she has psychological problems caused by the injuries.” A three-judge panel of the Workers’ Compensation Court (WCC) adopted the trial judge’s order. Claimant then sought review of the adverse panel decision in the Court of Civil Appeals (COCA).
¶ 3 COCA vacated the panel’s order and remanded the claim for further proceedings before the trial judge. Its decision, which rests on a theory chosen
sua sponte
for resolution of a first-impression issue,
holds that by its enactment of the independent medical examiner (IME) system
the Legislature intended to accord
prima facie
effect to an IME-report assessment. Because COCA concluded that legislative intent to give greater probative value to an opinion by a court-appointed IME is explicitly (or implicitly) reflected in the provisions of 85 O.S.2001 § 17, it addressed to the trial tribunal on-remand directions (a) to give the IME assessments
“prima facie
effect” on the issues of claimant’s need for pain management and psychological overlay treatment, (b) to afford the employer an opportunity to present rebuttal proof “of record and not yet
considered” and (c) to “then weigh the evi-denee before it.”
¶ 4 On certiorari granted upon the employer’s petition, we now vacate COCA’s opinion and, for the reasons to be stated, remand the claim to the appellate tribunal for reconsideration of all the issues before it in a manner not inconsistent with today’s pronouncement.
II
THE CERTIORARI ARGUMENTS
¶ 5 Employer argues that COCA’s elevation of the IME-report assessments (to a higher level of probative value than that accorded other medical opinions) is an impermissible expansion of the statute-ascribed role for court-appointed physicians, which goes far beyond the dimensions contemplated (or intended) by the legislative text. By prescribing a different weight to be given IME opinions, COCA distorts, if not indeed discards, the long-established any-competent-evidence standard for review of the panel’s factual resolutions
and invests the court-appointed doctor with “judicial authority” for making findings of fact. Employer asserts that COCA’s reliance on Massachusetts and Louisiana law is misplaced. In those states the legislature has explicitly given
prima facie
effect to an IME-report assessment. Louisiana’s workers’ compensation system is managed by an administrative agency whose hearing officers — when confronted with disputed medical facts — are statutorily mandated to cede all fact-finding authority to a doctor. Employer claims the Massachusetts IME system is also distinguishable in several respects from that in Oklahoma. According to the employer, even if we assumed COCA was correct concerning the weight to be given an IME opinion, it nonetheless committed fatal error by failing to determine if there is “any competent evidence” to support the panel’s findings. Employer urges the panel’s denial of the claimant-sought relief is supported by competent evidence.
¶ 6 Claimant, on the other hand, argues the Legislature must have intended for IME opinions to serve as a tie-breaker between dueling “party-sponsored” physicians. She urges us to give legitimacy to the legislative scheme by crafting either (a) a presumption in favor of unanimous IME opinions or (b) a
prima facie
standard for unanimous IME opinions. According to claimant, a contrary construction will rob core meaning from intended IME utilization. She claims the medical opinion upon which the trial tribunal based its decision lacks probative value when considered in light of all the medical proof as a whole which bears on the medical causation issue. In other words, claimant urges us to review the enactment authorizing the use of IME reports as a legislative call for replacement of the any-eompetent-evidenee standard by the clear-weight-of-the-evidence gauge.
Ill
THE STATUTORY WORKERS’ COMPENSATION REGIME
A.
The Institutional Design For A Workers’ Compensation Law’s Intra-Court Appeal and Its Distinction From the Standard of Review That Governs In The Extra-Court Appellate Process
¶ 7 A resolution of the sole issue on certio-rari requires an explanation of the well-and long-established statute-based (a) distinction between an intra-court appeal and an extra-court proceeding for review in the appellate courts
as well as (b) the standard that
governs in the appellate courts the review of the trial tribunal’s disputed fact findings.
¶8 Upon the statute-authorized intra-court appeal, a three-judge panel of the same tribunal may reexamine a trial judge’s findings of disputed fact and conclusions of law (85 O.S.2001 § 3.6(A)),
while review before COCA and in this court stands strictly confined to questions of law (85 O.S.2001 § 26(B)).
The three-judge panel’s review of the trial tribunal’s findings of fact is governed by a clear-weight-of-the-evidence test.
When reviewing the panel’s factual resolutions of nonjurisdictional issues, this court and COCA alike must apply the any-competent-evidence standard.
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OPALA, J.
¶ 1 The court’s certiorari grant stands confined to the single issue whether the Court of Civil Appeals (COCA) erred in its construction of the independent medical examiner (IME) statutory regime, 85 O.S.2001 § 17,
by elevating an IME medical assessment of compensable harm to a higher rank of probative value (for
prima facie
effect) than all other admissible expert opinions. We answer in the affirmative and retransfer the case to COCA for its reconsideration of all issues in a manner consistent with today’s pronouncement.
I
THE ANATOMY OF LITIGATION
¶2 Claimant’s (Yocum or claimant) com-pensable condition stood adjudicated in August 2001 as that of a temporarily totally disabled person from an injury to her neck, back and left shoulder (on 2 February 2000) while working for Greenbriar Nursing Home (Greenbriar or employer). She was found to be in need of further medical treatment. Claimant’s physician recommended she undergo a psychological evaluation as well as procedures for pain management. Employer’s medical expert reached a contrary conclusion. According to his report (dated 11 March 2002) claimant was neither in need of medical care and maintenance nor of treatment for psychological overlay. The report states that claimant’s complaints of anxiety are caused by a pre-existing condition, not by the February 2 injury. The trial judge then ordered four independent medical evaluations to assess claimant’s need, if any, for further treatment. These four reports recommended pain management and psychological overlay treatment. On consideration of the entire medical evidence, the trial judge denied the request for treatment, resting his decision on the ground he was “not persuaded ... that she has psychological problems caused by the injuries.” A three-judge panel of the Workers’ Compensation Court (WCC) adopted the trial judge’s order. Claimant then sought review of the adverse panel decision in the Court of Civil Appeals (COCA).
¶ 3 COCA vacated the panel’s order and remanded the claim for further proceedings before the trial judge. Its decision, which rests on a theory chosen
sua sponte
for resolution of a first-impression issue,
holds that by its enactment of the independent medical examiner (IME) system
the Legislature intended to accord
prima facie
effect to an IME-report assessment. Because COCA concluded that legislative intent to give greater probative value to an opinion by a court-appointed IME is explicitly (or implicitly) reflected in the provisions of 85 O.S.2001 § 17, it addressed to the trial tribunal on-remand directions (a) to give the IME assessments
“prima facie
effect” on the issues of claimant’s need for pain management and psychological overlay treatment, (b) to afford the employer an opportunity to present rebuttal proof “of record and not yet
considered” and (c) to “then weigh the evi-denee before it.”
¶ 4 On certiorari granted upon the employer’s petition, we now vacate COCA’s opinion and, for the reasons to be stated, remand the claim to the appellate tribunal for reconsideration of all the issues before it in a manner not inconsistent with today’s pronouncement.
II
THE CERTIORARI ARGUMENTS
¶ 5 Employer argues that COCA’s elevation of the IME-report assessments (to a higher level of probative value than that accorded other medical opinions) is an impermissible expansion of the statute-ascribed role for court-appointed physicians, which goes far beyond the dimensions contemplated (or intended) by the legislative text. By prescribing a different weight to be given IME opinions, COCA distorts, if not indeed discards, the long-established any-competent-evidence standard for review of the panel’s factual resolutions
and invests the court-appointed doctor with “judicial authority” for making findings of fact. Employer asserts that COCA’s reliance on Massachusetts and Louisiana law is misplaced. In those states the legislature has explicitly given
prima facie
effect to an IME-report assessment. Louisiana’s workers’ compensation system is managed by an administrative agency whose hearing officers — when confronted with disputed medical facts — are statutorily mandated to cede all fact-finding authority to a doctor. Employer claims the Massachusetts IME system is also distinguishable in several respects from that in Oklahoma. According to the employer, even if we assumed COCA was correct concerning the weight to be given an IME opinion, it nonetheless committed fatal error by failing to determine if there is “any competent evidence” to support the panel’s findings. Employer urges the panel’s denial of the claimant-sought relief is supported by competent evidence.
¶ 6 Claimant, on the other hand, argues the Legislature must have intended for IME opinions to serve as a tie-breaker between dueling “party-sponsored” physicians. She urges us to give legitimacy to the legislative scheme by crafting either (a) a presumption in favor of unanimous IME opinions or (b) a
prima facie
standard for unanimous IME opinions. According to claimant, a contrary construction will rob core meaning from intended IME utilization. She claims the medical opinion upon which the trial tribunal based its decision lacks probative value when considered in light of all the medical proof as a whole which bears on the medical causation issue. In other words, claimant urges us to review the enactment authorizing the use of IME reports as a legislative call for replacement of the any-eompetent-evidenee standard by the clear-weight-of-the-evidence gauge.
Ill
THE STATUTORY WORKERS’ COMPENSATION REGIME
A.
The Institutional Design For A Workers’ Compensation Law’s Intra-Court Appeal and Its Distinction From the Standard of Review That Governs In The Extra-Court Appellate Process
¶ 7 A resolution of the sole issue on certio-rari requires an explanation of the well-and long-established statute-based (a) distinction between an intra-court appeal and an extra-court proceeding for review in the appellate courts
as well as (b) the standard that
governs in the appellate courts the review of the trial tribunal’s disputed fact findings.
¶8 Upon the statute-authorized intra-court appeal, a three-judge panel of the same tribunal may reexamine a trial judge’s findings of disputed fact and conclusions of law (85 O.S.2001 § 3.6(A)),
while review before COCA and in this court stands strictly confined to questions of law (85 O.S.2001 § 26(B)).
The three-judge panel’s review of the trial tribunal’s findings of fact is governed by a clear-weight-of-the-evidence test.
When reviewing the panel’s factual resolutions of nonjurisdictional issues, this court and COCA alike must apply the any-competent-evidence standard.
If rested on competent evidence,
findings of nonjurisdictional facts are conclusive and binding on both appellate courts.
Any evidence in the record — on the basis of which the trier could have reached a contrary conclusion — is treated in the extra-court process of reviewing a workers’ compensation court’s findings as without legal effect.
In short, the trial tribunal is the sole judge of the credibility of witnesses and of the weight
and value
to be accorded to the testimony adduced.
Only in the absence of competent
evidence may that tribunal’s decision be viewed as legally erroneous and hence subject to appellate vacation.
It is against this backdrop of long-established statutory jurisprudence that the 1995 IME legislation must today undergo our scrutiny.
¶ 9 The goal of any inquiry into the meaning of a statutory enactment is to ascertain and give effect to the intent of the legislature.
The law-making body is presumed to have expressed its intent in a statute’s language and to have intended what the text expresses.
If a statute is plain and unambiguous, it will not be subjected to judicial construction, but will receive the effect its language dictates.
Only where the intent cannot be ascertained from a statute’s text, as when ambiguity or conflict (with other statutes) is shown to exist, may rules of statutory construction be employed.
¶ 10 This court is without authority to rewrite a statute merely because it might not comport with its own notions of prudent public policy.
We cannot trump a law’s validity by employment of some extra-constitutional standards. If the text is plain and unambiguous, our duty stands confined to making it enforceable.
B.
The Use Of The Independent Medical Examiner System
— 85
O.S.2001 § 17(D)
¶ 11 There is neither legislative mandate for departing from the long-established any-competent-evidenee standard of review nor for according an IME-report assessment an elevated (or lowered) rank for probative value. Unlike the
administratively managed
workers’ compensation regimes of Massachusetts
and Louisiana,
which
statutorily mandate
that IME opinions be treated as “prima facie” proof, the terms of 85 O.S.2001 § 17(D) allocate no predetermined weight or probative value to the medical opinions of court-appointed physicians. The only intent divinable from the provisions of § 17(D), when their text is, as it must be, considered together with the terms of 85 O.S.2001 §§ 3.6(A)
and 26(B),
is that the legal effect and probative value of an IME-report’s evaluation of one’s impairment or disability are the same as those of any other admitted evidence in the case.
¶ 12 In short, there is no textually demonstrable legislative intent to accord an IME report a different rank of probative value. Any other gloss upon § 17 would place its constitutionality in serious doubt. When a statute is susceptible to more than one construction, it must be given that meaning which will free its text from constitutional doubt rather than one that would leave it vulnerable to some lingering infirmities.
For our analysis of the fundamental-law concern see Part IV,
infra.
IY
STATE FUNDAMENTAL LAW PROHIBITS LEGISLATIVE ENCROACHMENT BY STATUTORY MANDATE THAT WOULD COMPEL A COURT TO ADJUDICATE A FACT IN ACCORDANCE WITH A PREDETERMINED FORMULA WHICH ROBS THE JUDICIARY OF ITS DECISION-AL FREEDOM FOR EVALUATION OF EVIDENCE
¶ 13 The separation-of-powers doctrine interdicts legislative intrusion upon the functions assigned to the judiciary by the constitution.
Legislative power is mainly confined to making law, while the judiciary is invested primarily with an adjudicative function — the authority to hear and determine forensic disputes.
A legislative removal of the discretionary component in adjudicative process is a usurpation of the courts’ freedom that is essential to the judiciary’s independence from the other two branches.
¶ 14 A legislative command to adjudicate a fact
by a predetermined statutory direction would constitute an impermissible invasion into the realm of judicial independence. It encroaches upon the free exercise of decisionmaking powers reserved to the judiciary.
Were the Legislature to require that the Workers’ Compensation Court accord an elevated degree of probative value to an IME report its enactment would impermissibly rob that tribunal of its independent power to establish impairment or disability within the range of received competent evidence.
The Legislature is
confined to mandating what facts must be adjudged. It may neither predetermine adjudicative facts nor direct that their presence or absence be found from any proof before a tribunal.
¶ 15 Even if we assumed that sapping the judiciary of its exclusive fact-finding control were constitutionally permissible, a legislative intrusion upon that control may not be inferred from a silent, ambiguous or doubtful statutory text.
Without a clear legislative warrant we are neither at liberty to engraft drastic limitations upon, nor curb the authority of, the compensation tribunal.
Y
THE CLAIM SHOULD BE REMANDED TO THE COURT OF CIVIL APPEALS FOR ITS RECONSIDERATION OF THE ISSUES RAISED IN EMPLOYER’S PETITION FOR REVIEW
¶ 16 COCA’s pronouncement, which vacated the claim’s denial on a theory chosen
sua sponte,
declined to reach for review the critical issue — whether there is competent evidence to support the panel’s order. Today’s resolution vacates COCA’s opinion and reinstates the viability of the yet-unresolved issues that stand tendered by the claimant’s petition for review.
When this court vacates a COCA opinion, it may address itself to any issue properly tendered by the petition for review or remand the claim to COCA for that court’s resolution.
Whether the trial tribunal’s panel did in fact err in adopting the trial judge’s order should be reviewed in the first instance by COCA. We hence retransfer the claim to that court.
VI
SUMMARY
¶ 17 The probative value of an IME’s opinion on the extent of impairment or disability is evidence to be considered on a footing equal to all other proof in the case. There is no basis in compensation law for authority to drain the judicial process of its very essence by encroaching on the trial tribunal’s freedom to rate compensable harm at any point that stands within the range of adduced
competent evidence. Legislation that either directly or obliquely predetermines an adjudicative fact impermissibly invades the judiciary’s exclusive constitutional prerogative of fact-finding. The body of public law that governs workers’ compensation benefits is entirely statutory. We are without power to restructure its basic system of judicature. The authority to do so lies within the exclusive domain of the Legislature. Because COCA declined to review the dispositive issue — whether there is competent evidence to support the panel’s order — the claim is remanded for that court’s disposition of claimant’s quest for review of the panel’s decision.
¶ 18 On certiorari granted upon the employer’s petition, the Court of Civil Appeals’ opinion is vacated and the claim is remanded to the division of the Court of Civil Appeals whence it came for reconsideration of all issues in a manner not inconsistent with this court’s pronouncement.
¶ 19 WINCHESTER, V.C.J., LAVENDER, HARGRAVE, OPALA and TAYLOR, JJ., concur.
¶ 20 WATT, C.J., KAUGER and EDMONDSON, JJ., concur in result.
¶ 21 COLBERT, J., dissents.