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Table 3 Change in serum creatinine from baseline in all patients with and without an ICD-10 N17x code for AKI (referred to as code positive or code negative)

From: Validation of administrative database codes for acute kidney injury in kidney transplant recipients

Diagnostic coding algorithm Code Number Absolute change (μmol/L)
Median (IQR)
Relative change (%)a
All diagnoses + 74 104.2 (57.0 to 158.0) 56.9 (35.0 to 111.4)
450 16.0 (−3.0 to 41.0) 12.9 (−2.2 to 30.5)
Admission diagnosis + 54 109.0 (62.0 to 161.0) 64.0 (35.0 to 122.1)
470 18.0 (−2.0 to 45.0) 13.8 (−1.5 to 32.5)
Main diagnosis/most responsible diagnosis + 25 128.0 (57.0 to 160.0) 71.3 (27.4 to 122.1)
499 19.0 (−1.0 to 51.0) 15.3 (−0.7 to 37.4)
  1. aRelative change = (peak serum creatinine − baseline serum creatinine)/baseline serum creatinine × 100