Authorities as the decision cited them, with how this panel applied each one.
Escobedo v. Marshalls (2005) 70 Cal.Comp.Cases 604, 621 (en banc)
To constitute substantial evidence, a medical or vocational opinion must state its conclusions in terms of reasonable probability, avoid speculation, rely on pertinent facts and an adequate examination and history, and explain the reasoning supporting its conclusions.
Applied to reject opinions lacking detailed reasoning or explanation of ADL impact for apportionment and rating.
From the decision · page 13(1970) 1 Cal.3d 627
[35 Cal.Comp.Cases 16].) To constitute substantial evidence, a medical or vocational opinion must
state its conclusions in terms of reasonable probability, avoid speculation, rely on pertinent facts and
an adequate examination and history, and explain the reasoning supporting its conclusions.
(Escobedo v. Marshalls (2005) 70 Cal.Comp.Cases 604, 621 (Appeals Board en banc).) Medical and
vocational reports do not constitute substantial evidence when they contain known errors or rely on
facts that are no longer germane, inadequate medical histories or examinations, or incorrect legal
theories. Likewise, a medical or vocational opinion cannot support the Appeals Board's findings if
it rests on surmise, speculation, conjecture, or guesswork. (Hegglin v. Workmen's Comp. Appeals
Bd. (1971) 4 Cal.3d 162, 169 [36 Cal.Comp.Cases 93].) Accordingly, the Appeals Board may
reweigh the evidence and reach a decision different from the WCJ's determination when other
Vigil v. County of Kern (2024) 89 Cal.Comp.Cases 686 (en banc)
An employee must present evidence explaining the specific impact the impairments have upon their ADLs to justify departing from the CVC table.
Applied to reject Dr. Goldstein's and Dr. Sussman's opinions for lack of ADL-specific explanation in impairment aggregation.
From the decision · page 14Here, in evaluating the permanent disability rating methodology, PQME Dr. Goldstein's
conclusion that adding rather than the CVC to aggregate the cervical spine and left shoulder
impairments is more accurate fails to constitute substantial medical evidence. Under Vigil, an
evaluating physician may rebut the CVC only by articulating how the rated body parts affect separate
and distinct ADLs or how overlapping ADLs result in an amplified overall functional impact.
An employee must present evidence explaining the specific impact the impairments have upon their
ADLs to justify departing from the CVC table. Unfortunately, PQME Dr. Goldstein merely posits a
"synergistic effect" between the cervical spine and the left shoulder to justify adding the impairments
to reach 35% WPI. However, this conclusory assertion rests on guesswork and fails to explain
explicitly the supporting reasoning to constitute substantial evidence. Because PQME Dr. Goldstein
fails to detail the specific impact upon applicant's ADLs or document the functional absence of
overlap required to rebut the schedule, his methodology does not comport with the evidentiary
standards we require under Vigil.
Lab. Code §§ 4663(a), 4664(a); Escobedo v. Marshalls (2005) 70 Cal.Comp.Cases 604, 611, 621 (en banc); Benson v. Permanente Med. Group (2007) 72 Cal.Comp.Cases 1620, 1622 (en banc)
A physician must determine apportionment based on causation, and must explain the 'how and why' of their apportionment opinion, considering all potential causes of disability.
Applied to reject Dr. Sussman's apportionment opinion as speculative and lacking adequate reasoning.
From the decision · page 16A physician must determine apportionment based on causation, because an employer is liable
solely for the portion of permanent disability directly attributable to an injury arising out of and
occurring in the course of employment. (Lab.Code, § 4663(a) and 4664(a).) "The plain reading of
`causation' in this context is causation of the permanent disability." (Escobedo v. Marshalls (2005)
70 Cal.Comp.Cases 604, 611 (Appeals Board en banc) (Escobedo).) Apportionment now includes
pathology, asymptomatic prior conditions, and retroactive prophylactic work preclusions, provided
there is substantial evidence establishing that these other factors have caused permanent disability.
Pursuant to Escobedo, a physician's opinion must constitute reasonable medical probability, must
not be speculative, rely on pertinent facts and/or an adequate examination and history, and must set
forth the reasoning in support of the conclusions. (Id. at p.621.) That is, a physician must explain the
"howand why" of their apportionment opinion and consider all potential causes of disability, whether
from a current, prior or subsequent industrial or nonindustrial injury or condition. (Ibid.; Benson v.
Permanente Med. Group (2007) 72Cal.Comp.Cases 1620, 1622 (Appeals Board en banc).)