OPINION
¶ 1 In this statutory special action, petitioner Mont Polanco contends the administrative law judge (ALJ) erred in denying his petition to reopen his workers’ compensation claim. The ALJ determined Polanco had failed to demonstrate “objective physical findings of [a] change in [Polanco’s] condition” as required by A.R.S. § 23-1061(H). Polanco argues § 23~1061(H) is unconstitutional as applied to his case. Finding no error, we affirm the award.
Factual and Procedural Background
¶ 2 “On review of an Industrial Commission award, we must view the evidence in the light most favorable to sustaining the
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Industrial Commission’s findings and award.”
Roberts v. Indus. Comm’n,
¶ 3 Polanco filed a petition to reopen his claim in November 2005, which the insurer denied. At the subsequent hearing on that petition, Dr. Prust testified that scarring in Polanco’s spine had worsened and was causing “more pain” and “reducing the efficacy of the caudal epidurals.” Prust testified the reports prepared by a radiologist comparing Polanco’s results from magnetic resonance imaging (MRI) examinations of his spine showed “some enhancing epidural tissue,” or changes in scar tissue, near Polanco’s spinal nerve roots. Prust admitted, however, that he had not personally reviewed the MRI films.
¶4 Dr. Kurt Schroeder testified he had reviewed MRI films of Polanco’s spine and those images contained no “objective evidence of a new, additional or previously undiscovered condition” or a “worsening between 2002 and 2006 of [Polanco’s] scar tissue.” Schroeder also stated his physical examination of Polanco did not indicate any “worsening of the scar tissue.” He did not express an opinion whether Polanco was a good candidate for a spinal cord stimulator.
¶ 5 After the hearing, the ALJ found there was “no material conflict” that the epidural injections were “not as effective anymore,” but adopted Sehroeder’s opinion “that there were no objective changes shown on [the MRI films].” The ALJ denied Polanco’s petition to reopen his claim but awarded him additional supportive medical maintenance benefits for “insertion of a spinal cord stimulator.” 1 Polanco then filed a request for review of that decision, asserting, inter alia, that § 23-1061(H) is unconstitutional as applied to his case. The ALJ affirmed his award on review and this statutory special action followed.
Discussion
¶ 6 Section 23-1061QH) governs the reopening of workers’ compensation claims and requires an employee to prove the existence of “a new, additional or previously undiscovered temporary or permanent condition” to reopen a claim. And the employee must show a causal relationship between the new condition and a prior industrial injury.
Stainless Specialty Mfg. Co. v. Indus. Comm’n,
¶ 7 The constitutional basis for Arizona’s workers’ compensation law is found in article XVIII, § 8 of the Arizona Constitution and
mandates that an employee receive workers’ compensation if the employee is injured in “any accident arising out of and in the course of ... employment,” and the injury “is caused in whole, or in part, or is contributed to, by a necessary risk or danger of such employment, or a necessary risk or danger inherent in the nature thereof, or by failure of such employer or its agents or employee or employees to exercise due care.”
Grammatico v. Indus. Comm’n,
First, the employee must have been acting in the course of employment. Second, the employee must have suffered a personal injury from an accident arising out of and in the course of such employment. Third, the resulting injury must have been caused in whole or in part, or contributed to, by a necessary risk of the employee’s employment, or a necessary risk or danger inherent in the nature of that employment or the employer’s lack of due care.
Id.
“Medical causation, in contrast, is established by showing that the accident caused the injury.”
Id.
If 20;
see also DeSchaaf v. Indus. Comm’n,
¶ 8 In
Grammatico,
our supreme court stated article XVIII, § 8 “addresses legal causation” and determined “the legislature may not define legal causation in a way that conflicts with [that section] because the legislature ‘cannot enact laws which will supersede constitutional provisions adopted by the people.’ ”
¶9 Polanco reasons “ § 23-1061(H) effectively abrogates otherwise compensable claims for a class of injuries,” specifically, “subjective injury,” regardless of whether the employee can show causation. Thus, he argues the “objective physical findings” requirement impermissibly limits legal causation because “the Arizona Constitution requires compensation for all injured workers — not just those who can provide objective evidence of subjective complaints — or are lucky enough to be filing their claim for the first time and not just attempting to reopen.”
¶ 10 Central to Polanco’s argument is his assertion that subjective pain, standing alone, is a compensable injury under article XVIII, § 8. As we understand his
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argument, he reasons that, if subjective pain is a compensable injury, then requiring objective evidence of that injury limits an employee’s ability to show legal causation because the employee would have to “show the un-showable — objective evidence of subjective injury.” Relying primarily on
Simpson v. Industrial Commission,
¶ 11 Arizona’s constitution and workers’ compensation statutes do not define the term “injury.” Our supreme court, however, has long held an accidental injury occurs “when usual exertion leads to something actually breaking or letting go with an obvious sudden
organic or structural change in the body.” Phelps Dodge Corp. v. Cabarga,
¶ 12 Subjective pain does not fall under Arizona’s definition of an injury. Therefore, because subjective pain is not an injury within the meaning of article XVIII, § 8 of the Arizona Constitution, § 23-1061(H) does not unconstitutionally eliminate it as a type of compensable injury. And the objective physical findings requirement of § 23-1061(H) does not address either legal or medical causation. That requirement instead makes clear that subjective pain alone cannot support a petition to reopen a claim. Rather, subjective pain must be directly related to the degree of impairment resulting from an objective physical change.
See Simpson,
¶ 13 We affirm the award.
Notes
. Polanco asserts the grant of his petition to reopen would compensate him for "lost wages due to the intractable pain since filing the Petition to Reopen” and “any wages lost for that period of time in which the treatment requires he be off-work” instead of just the costs associated with insertion of the spinal cord stimulator covered by the supportive care award. Although Polanco asserts the ALJ "erred in providing [the spinal cord stimulator] under supportive care” and insertion of the spinal cord stimulator is more properly characterized as "active care,” we do not view this statement as an argument the supportive care award should be set aside, but instead simply as support for his contention that his medical needs have changed. Pima County does not argue that the supportive care award should be set aside.
. In his request for review filed below, Polanco argued that, even if the physical findings requirement of A.R.S. § 23-106l(H) was constitutional, insertion of the spinal cord stimulator was a "new treatment” and, thus, would be a proper basis for reopening his claim under
Stainless
irrespective of whether he provided objective physical findings. In that case, which preceded •the physical findings requirement amendment to
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§ 23-1061(H), our supreme court held "a difference ... in the medical procedures necessary to treat [an injury]” would support reopening a claim.
. In
Cassey v. Industrial Commission,
. Arizona law also permits an employee to receive compensation for gradual injuries.
See Reilly v. Indus. Comm'n,
. Polanco cites the Sixth Edition of Black’s Law Dictionary 786 (1990) (emphasis deleted), which includes "[physical pain” in its definition of "bodily injury." That phrase, however, was removed from the definition of "bodily injury” in the subsequent edition. See Black's Law Dictionary 789 (7th ed.1999) (emphasis deleted).
