Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Job Classification

In most duration tables, five job classifications are displayed. These job classifications are based on the amount of physical effort required to perform the work. The classifications correspond to the Strength Factor classifications described in the United States Department of Labor's Dictionary of Occupational Titles. The following definitions are quoted directly from that publication.

Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Nephritis, Interstitial


Related Terms

  • Acute Interstitial (Allergic) Nephritis
  • Balkan Nephropathy
  • Papillary Necrosis
  • Pyelonephritis
  • Tubulointerstitial Nephritis

Differential Diagnosis

Specialists

  • Nephrologist
  • Urologist

Comorbid Conditions

Factors Influencing Duration

Length of disability may be influenced by the underlying cause of the condition, the extent and severity of the disease at initial presentation, the effectiveness of treatment, the age of the individual, and the presence of hypertension or complications.

Medical Codes

ICD-9-CM:
583.89 - Nephritis and Nephropathy, Other; Exudative or Interstitial
590.00 - Pyelonephritis, Chronic, without Lesion of Renal Medullary Necrosis
590.01 - Pyelonephritis, Chronic, with lesion of Renal Medullary Necrosis
590.10 - Pyelonephritis, Acute, without Lesion of Renal Medullary Necrosis
590.11 - Pyelonephritis, Acute, with Lesion of Renal Medullary Necrosis

Diagnosis

History: Symptoms are usually those of renal failure. The individual may report increased or decreased urine output (polyuria or oliguria), abnormally excessive nocturnal urination (nocturia), nausea, vomiting, swelling of the body (any area), weight gain (from fluid retention), and drowsiness or confusion. There may be fever, a rash, and blood in the urine (hematuria).

Physical exam: The physical exam may reveal edema, or fluid overload, or signs of volume depletion, with abnormal sounds heard when examining with a stethoscope. There may be hematuria, fever, nausea, and mental changes, ranging from drowsiness to confusion to coma. Blood pressure is often high (hypertension).

Tests: Urinalysis may reveal the presence of red blood cells (RBC) in the urine (hematuria), increased protein (proteinuria), renal tubular cells, and other abnormalities. A complete blood count (CBC) may reveal eosinophilia (higher than normal count of eosinophils, a type of white blood cell). A failure to concentrate urine even when water intake is restricted may be revealed with urine specific gravity and osmolality tests. Urine pH may show a failure to acidify urine properly. Arterial gases and blood chemistry may reveal metabolic acidosis. BUN (blood urea nitrogen) and creatine levels are measured to assess the level of kidney functioning.

The diagnosis of interstitial nephritis and degree of damage to the kidney may be confirmed with a kidney biopsy.

Source: Medical Disability Advisor






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