432Lesions of the vestibular portion of the nerve result in vertigo with or without nausea and vomiting.

432     Lesions of the vestibular portion of the nerve result in vertigo with or without nausea and vomiting.

433     Table 12.5.5: The auditory nerve (VIII) is used where symptoms are continuous.

434     To obtain the final WPI rating in the case of episodic disturbances of equilibrium (such as Menière’s disease), apply the modifier from Figure 12-C: %WPI modifiers for episodic conditions to the WPI rating from Table 12.5.5: The auditory nerve (VIII).

Table 12.5.5: The auditory nerve (VIII)

See notes to Table 12.5.5 for further information.

| 0 | Symptoms of vestibular dysequilibrium present without supporting objective findings, and activities of daily living can be performed without assistance. | | 5 | Symptoms of vestibular dysequilibrium present with supporting objective findings, and most activities of daily living can be performed without assistance. | | 10 | Symptoms of vestibular dysequilibrium present with supporting objective findings, and most activities of daily living, except those of a complex nature (for example, riding a bicycle), or hazardous nature (for example, walking on a roof, girders or scaffolding), can be performed without assistance. | | 20 | Symptoms of vestibular dysequilibrium present with supporting objective findings, and assistance is required with most activities of daily living, except self care, walking, and riding in a motor vehicle as a passenger. | | 30 | Symptoms of vestibular dysequilibrium present with supporting objective findings, and assistance is required with all activities of daily living, except self care. | | 45 | Symptoms of vestibular dysequilibrium present with supporting objective findings, and assistance is required with all activities of daily living, including self care not requiring ambulation. | | 60 | Symptoms of vestibular dysequilibrium present with supporting objective findings, and activities of daily living cannot be performed without assistance, including self care. | | 80 | Symptoms of vestibular dysequilibrium present with supporting objective findings, and activities of daily living cannot be performed without assistance, including self care, and home confinement is necessary |

Notes to Table 12.5.5

1. ‘Assistance’ means the immediate presence of a suitable person, responsible in whole or in part for the care of the employee.

Figure 12-C: %WPI modifiers for episodic conditions

| Signs and symptoms | Modifier | | Absent. | 0.0 | | Intermittent. | 0.2 | | Present on a daily basis for periods aggregating 3 or more months per year but less than 6 months per year. | 0.4 | | Present on a daily basis for periods aggregating 6 or more months per year but less than 8 months per year. | 0.6 | | Present on a daily basis for periods aggregating 8 months or more per year but less than 10 months per year. | 0.8 | | Present on a daily basis for period aggregating 10 months per year or more. | 1.0 |