Document ID: chunk:federal_register_of_legislation:F2023C00151:reg:15:p27
Version: federal_register_of_legislation:F2023C00151
Segment Type: reg
Provision Reference: reg 15 (pt 27/28)
Character Range: 401642–405085

of an attack" refers to the number of affected days in a year.

Intermittent disorders are also disorders that affect one or more body systems. For example, asthma is both an intermittent condition and a cardio-respiratory condition. Hence, potentially, any intermittent disorder can be assessed by either of two methods:

    by applying the system-specific tables contained in Chapters 1 to 12.  Several of those tables should be used if the intermittent disorder causes multiple losses of function; or
    by applying this chapter.

In practice, except where the intermittent nature of the condition clearly overwhelms its system specific effects or vice versa, both methods are to be applied for rating the intermittent condition and the higher of those two ratings taken as the final rating for the intermittent condition.

Calculation of the impairment rating for an accepted intermittent condition

Follow the steps below to calculate the impairment rating due to an accepted intermittent condition:

(Each of these steps is elaborated in the following pages.)

STEP 1   Establish which body systems are affected by the intermittent condition.                                                            Page 173
STEP 2   Determine the functional impairment ratings for the intermittent condition.                                                         Page 173
STEP 3   Determine the total combined impairment rating for the various body system impairments attributable to the intermittent condition.  Page 173
STEP 4   Determine whether the attacks are of one or more significant types and group them accordingly.                                      Page 174
STEP 5   Determine the rating for intermittent attack severity.                                                                              Page 174
STEP 6   Determine the rating for the intermittent attack duration.                                                                          Page 174
STEP 7   Determine the intermittent grading code for the intermittent attack.                                                                Page 175
STEP 8   Determine the impairment rating for the intermittent attack by reference to the number of affected days per year.                   Page 175
STEP 9   Compare the impairment ratings obtained in Step 3 and Step 8. Take the higher rating.                                               Page 176
STEP 10  Determine the rating for the impairment resulting from the avoidance or preclusion of otherwise normal activities between attacks.  Page 176

Step 1: Establish which body systems the intermittent condition affects.

Before an intermittent condition is assessed, information regarding the extent of the condition must be available. From that information, the affected body systems are to be established and the applicable chapters of this Guide applied.

Step 2: Determine the functional impairment ratings attributable to the intermittent condition for each affected body system.

Use the relevant chapters and determine the appropriate rating.

Chapter 19 (Partially Contributing Impairment) or Chapter 20 (Apportionment) may also have to be applied to allow for the effect of other accepted conditions or non-accepted conditions respectively.

Step 3: Determine the total combined impairment rating for the various body system impairments attributable to the intermittent condition.

Combine