Document ID: chunk:federal_register_of_legislation:F2016L01332:reg:3c:p4
Version: federal_register_of_legislation:F2016L01332
Segment Type: reg
Provision Reference: reg 3C (pt 4/5)
Character Range: 405412–408099

Chapter 18, are equal to the original impairment rating.

    If the apportionment has to be done in ratios that are not included in Tables 20.1 to
20.13, then the apportionment may be performed by applying Table 18.1 (Combined Values Chart) in reverse. Should more than one solution be possible, that which is the best fit is to be used.

    The ratings that result from the application of apportionment can never be less than those which the same conditions would have attracted had apportionment not been applied.

 HOW TO USE APPORTIONMENT

 INSTRUCTIONS

 Follow the steps below in applying apportionment.

 STEP Determine if apportionment is to be used.
1 Apportionment is to be used when it is necessary, for a given accepted condition, to compare an impairment rating derived from one table with an impairment rating derived from another table, and when two or more accepted conditions contribute to the impairment ratings from either table.

 STEP Find the relative contribution of each contributing condition.
2 The relative contribution of each accepted condition to the impairment rating that is to be apportioned should be expressed as a simple ratio. (The ratio should always be expressed in terms of small integers, e.g. 1:2, 1:3, 1:1:2, etc.)

             The judgement of the ratio should be based on appropriate medical advice.

 STEP

Apportion the single impairment rating into parts.
3 Once the ratio is known the single rating is to be apportioned to all the contributing conditions. In common cases (2 or 3 contributing conditions) the apportioned ratings are to be read off Tables 20.1 to 20.13. In unusual cases that are not covered in these tables, the method described on page 241 is to be applied.

 STEP

For each condition, compare ratings from two relevant tables.
4 For each condition, the higher of the two relevant ratings is to be selected.

 STEP

Do not combine individual ratings until the end.
5 Individual ratings obtained from applying the apportionment process are not to be combined until the end of the overall assessment process, when ratings for all of the veteran's assessable conditions are combined to obtain a single value representing the combined impairment rating for accepted conditions.

    HOW TO USE APPORTIONMENT

    Example

    The apportionment process can be illustrated by using the example mentioned in the introduction.

    STEP Determine if apportionment is to be used.
1 When ischaemic heart disease and chronic bronchitis are both accepted conditions, apportionment has to be used because each of these conditions can be rated from separate Other Impairment tables in Chapter 1.

    STEP