r_code_list.html

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    <tr>
      <th>Codeset name</th>

      <th>Brief Description</th>

      <th>Date Implemented</th>

      <th>Last Updated</th>

      <th>Notes on Usage</th>
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      <td>glean_nephrotic_subcohort</td>

      <td>
        Patients in GLEAN cohort who have more nephrotic syndrome diagnoses than nephritis diagnoses
      </td>
    </tr>

    <tr>
      <td>kidney_biopsy</td>

      <td>
        Kidney biopsy is identified through one of the following approaches:
        <ul>
        <li> Procedure code for kidney biopsy</li>
        <li> Procedure code associated with biopsy (renal not specified), accompanied by source value string search for kidney/renal/kidney biopsy ICD code or kidney finding condition code on same date</li>
        <li> Condition code for kidney biopsy</li>
        <li> Condition code for biopsy result (renal not specified), accompanied by kidney finding condition code on same date</li>
        <li>String search for kidney/renal biopsy in visit source value</li>
      </td>
    </tr>

    <td>egfr</td>

    <td>
      calculate estimated Glomerular Flow Rate (eGFR) from serum creatinine measurements and height using Schwarz bedside equation
    </td>
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