OAR 436-035-0013
Findings of Impairment


(1)

Findings of impairment, generally. Findings of impairment are objective medical findings that measure the extent to which a worker has suffered permanent loss of use or function of a body part or system.

(2)

Findings of impairment when the worker is medically stationary. If the worker is medically stationary, findings of impairment are determined by performing the following steps:

(a)

In initial injury claims.

(A)

Identify each body part or system in which use or function is permanently lost as a result of an accepted condition or a direct medical sequela of an accepted condition.

(B)

For each body part or system identified in paragraph (A) of this subsection, establish the extent to which use or function of the body part or system is permanently lost; and

(C)

Establish the portion of the loss caused by:
(i)
Any accepted condition;
(ii)
Any direct medical sequela of an accepted condition;
(iii)
Any condition that existed before the initial injury incident but does not qualify as a pre-existing condition;
(iv)
Any pre-existing condition that is not otherwise compensable;
(v)
Any denied condition; and
(vi)
Any superimposed condition.
Example: Accepted condition: Low back strain
- Superimposed condition: pregnancy (mid-term)
- Denied condition: lumbar disc herniation
- In the closing examination, the attending physician describes range of motion findings and states that 10% of the range of motion loss is due to the accepted condition, 50% of the loss is due to a lumbar disc herniation, and 40% of the loss is due to the pregnancy. The worker is eligible for an impairment award for the 10% of the range of motion loss that is due to the low back strain. Under these rules, the range of motion loss is valued at 10%. 10% x .10 equals 1% impairment.

(b)

In new or omitted condition claims.

(A)

Identify each body part or system in which use or function is permanently lost as a result of an accepted new or omitted condition or a direct medical sequela of an accepted new or omitted condition.

(B)

For each body part or system identified in paragraph (A) of this subsection, establish the extent to which use or function of the body part or system is permanently lost; and

(C)

Establish the portion of the loss caused by:
(i)
Any accepted new or omitted condition;
(ii)
Any direct medical sequela of an accepted new or omitted condition;
(iii)
In a new condition claim, any condition that existed before the onset of the accepted new medical condition but does not qualify as a pre-existing condition;
(iv)
In an omitted condition claim, any condition that existed before the initial injury incident but does not qualify as a pre-existing condition;
(v)
Any pre-existing condition that is not otherwise compensable;
(vi)
Any denied condition; and
(vii)
Any superimposed condition.

(c)

In aggravation claims.

(A)

Identify each body part or system in which use or function is permanently lost as a result of an accepted worsened condition or a direct medical sequela of an accepted worsened condition.(B) For each body part or system identified in paragraph (A) of this subsection, establish the extent to which use or function of the body part or system is permanently lost; and

(C)

Establish the portion of the loss caused by:
(i)
Any accepted worsened condition;
(ii)
Any direct medical sequela of an accepted worsened condition;
(iii)
Any condition that existed before the onset of the accepted worsened condition but does not qualify as a pre-existing condition;
(iv)
Any pre-existing condition that is not otherwise compensable;
(v)
Any denied condition; and
(vi)
Any superimposed condition.

(d)

In occupational disease claims.

(A)

Identify each body part or system in which use or function is permanently lost as a result of an accepted occupational disease or a direct medical sequela of an accepted occupational disease.

(B)

For each body part or system identified in paragraph (A) of this subsection, establish the extent to which use or function of the body part or system is permanently lost; and

(C)

Establish the portion of the loss caused by:
(i)
Any accepted occupational disease;
(ii)
Any direct medical sequela of an accepted occupational disease;
(iii)
Any pre-existing condition that is not otherwise compensable;
(iv)
Any denied condition; and
(v)
Any superimposed condition.

(3)

Findings of impairment when the worker is not medically stationary. Except for a claim closed under ORS 656.268 (Claim closure)(1)(c), if the worker is not medically stationary, findings of impairment are determined by performing the following steps:

(a)

In initial injury claims.

(A)

Identify each body part or system in which use or function is likely to be permanently lost as a result of an accepted condition or a direct medical sequela of an accepted condition at the time the worker is likely to become medically stationary;

(B)

For each body part or system identified in paragraph (A) of this subsection, estimate the extent to which the use or function of the body part or system is likely to be permanently lost at the time the worker is likely to become medically stationary; and

(C)

Estimate the portion of the loss that is likely to be caused by:
(i)
Any accepted condition;
(ii)
Any direct medical sequela of an accepted condition;
(iii)
Any condition that existed before the initial injury incident but does not qualify as a pre-existing condition;
(iv)
Any pre-existing condition that is not otherwise compensable;
(v)
Any denied condition; and
(vi)
Any superimposed condition.

(b)

In new or omitted condition claims.

(A)

Identify each body part or system in which use or function is likely to be permanently lost as a result of an accepted new or omitted condition or a direct medical sequela of an accepted new or omitted condition at the time the worker is likely to become medically stationary;

(B)

For each body part or system identified in paragraph (A) of this subsection, estimate the extent to which the use or function of the body part or system is likely to be permanently lost at the time the worker is likely to become medically stationary; and

(C)

Estimate the portion of the loss that is likely to be caused by:
(i)
Any accepted new or omitted condition;
(ii)
Any direct medical sequela of an accepted new or omitted condition;
(iii)
In a new condition claim, any condition that existed before the onset of the accepted new medical condition but does not qualify as a pre-existing condition;
(iv)
In an omitted condition claim, any condition that existed before the initial injury incident but does not qualify as a pre-existing condition;
(v)
Any pre-existing condition that is not otherwise compensable;
(vi)
Any denied condition; and
(vii)
Any superimposed condition.

(c)

In aggravation claims.

(A)

Identify each body part or system in which use or function is likely to be permanently lost as a result of an accepted worsened condition or a direct medical sequela of an accepted worsened condition at the time the worker is likely to become medically stationary;

(B)

For each body part or system identified in paragraph (A) of this subsection, estimate the extent to which the use or function of the body part or system is likely to be permanently lost at the time the worker is likely to become medically stationary; and

(C)

Estimate the portion of the loss that is likely to be caused by:
(i)
Any accepted worsened condition;
(ii)
Any direct medical sequela of an accepted worsened condition;
(iii)
Any condition that existed before the onset of the accepted worsened condition but does not qualify as a pre-existing condition;
(iv)
Any pre-existing condition that is not otherwise compensable;
(v)
Any denied condition; and
(vi)
Any superimposed condition.

(d)

In occupational disease claims.

(A)

Identify each body part or system in which use or function is likely to be permanently lost as a result of an accepted occupational disease or a direct medical sequela of an accepted occupational disease at the time the worker is likely to become medically stationary;

(B)

For each body part or system identified in paragraph (A) of this subsection, estimate the extent to which the use or function of the body part or system is likely to be permanently lost at the time the worker is likely to become medically stationary; and

(C)

Estimate the portion of the loss that is likely to be caused by:
(i)
Any accepted occupational disease;
(ii)
Any direct medical sequela of an accepted occupational disease;
(iii)
Any pre-existing condition that is not otherwise compensable;
(iv)
Any denied condition; and
(v)
Any superimposed condition.

(4)

Age and education. The social-vocational factors of age and education (including SVP) are not apportioned, but are determined as of the date of issuance.

(5)

Irreversible findings of impairment or surgical value. Workers with an irreversible finding of impairment or surgical value due to the compensable injury receive the full value awarded in these rules for the irreversible finding or surgical value.
Example: Accepted conditions: Low back strain with herniated disk at L5-S1 and diskectomy.
- Noncompensable condition: pregnancy (mid-term)
- The worker is released to regular work. In the closing examination, the attending physician describes range of motion findings and states that 60% of the range of motion loss is due to the accepted conditions and 40% of the range of motion loss is due to the pregnancy. Under these rules, the range of motion loss is valued at 10%. 10% x .60 equals 6%.
- Diskectomy at L5-S1 (irreversible finding) = 9% per these rules.
- Combine 9% with 6% for a value of 14% impairment for the compensable injury.

Source: Rule 436-035-0013 — Findings of Impairment, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=436-035-0013.

436‑035‑0001
Authority for Rules
436‑035‑0002
Purpose of Rules
436‑035‑0003
Applicability of Rules
436‑035‑0005
Definitions
436‑035‑0006
Determination of Benefits for Disability Caused by the Compensable Injury
436‑035‑0007
General Principles
436‑035‑0008
Calculating Disability Benefits (Dates of Injury prior to 1/1/2005)
436‑035‑0009
Calculating Disability Benefits (Date of Injury on or after 1/1/2005)
436‑035‑0011
Determining Percent of Impairment
436‑035‑0012
Social-Vocational Factors (Age/Education/Adaptability) and the Calculation of Work Disability
436‑035‑0013
Findings of Impairment
436‑035‑0014
Worsened Pre-existing Conditions and Combined Conditions
436‑035‑0015
Offsetting Prior Awards
436‑035‑0016
Reopened Claim for Aggravation/Worsening
436‑035‑0017
Authorized Training Program (ATP)
436‑035‑0018
Death
436‑035‑0019
Chronic Condition
436‑035‑0020
Parts of the Upper Extremities
436‑035‑0030
Amputations in the Upper Extremities
436‑035‑0040
Loss of Opposition in Thumb/Finger Amputations
436‑035‑0050
Thumb
436‑035‑0060
Finger
436‑035‑0070
Conversion of Thumb/Finger Values to Hand Value
436‑035‑0075
Hand
436‑035‑0080
Wrist
436‑035‑0090
Conversion of Hand/Forearm Values to Arm Value
436‑035‑0100
Arm
436‑035‑0110
Other Upper Extremity Findings
436‑035‑0115
Conversion of Upper Extremity Values to Whole Person Values
436‑035‑0130
Parts of the Lower Extremities
436‑035‑0140
Amputations in the Lower Extremities
436‑035‑0150
Great Toe
436‑035‑0160
Second through Fifth Toes
436‑035‑0180
Conversion of Toe Values to Foot Value
436‑035‑0190
Foot
436‑035‑0210
Conversion of Foot Value to Leg Value
436‑035‑0220
Leg
436‑035‑0230
Other Lower Extremity Findings
436‑035‑0235
Conversion of Lower Extremity Values to Whole Person Values
436‑035‑0250
Hearing Loss
436‑035‑0255
Conversion of Hearing Loss Values to Whole Person Values
436‑035‑0260
Visual Loss
436‑035‑0265
Conversion of Vision Loss Values to Whole Person Values
436‑035‑0330
Shoulder Joint
436‑035‑0340
Hip
436‑035‑0350
General Spinal Findings
436‑035‑0360
Spinal Ranges of Motion
436‑035‑0370
Pelvis
436‑035‑0375
Abdomen
436‑035‑0380
Cardiovascular System
436‑035‑0385
Respiratory System
436‑035‑0390
Cranial Nerves/Brain
436‑035‑0395
Spinal Cord
436‑035‑0400
Mental Illness
436‑035‑0410
Hematopoietic System
436‑035‑0420
Gastrointestinal and Genitourinary Systems
436‑035‑0430
Endocrine System
436‑035‑0440
Integument and Lacrimal System
436‑035‑0450
Immune System
436‑035‑0500
Rating Standard for Individual Claims
Last Updated

Jun. 8, 2021

Rule 436-035-0013’s source at or​.us