Thresholds
- Kidney function over time: Threshold: filtering rate below 60 on two results at least 90 days apart, none of 60 or more between them.
- Creatinine change during this stay: Threshold: creatinine up by 0.3 mg/dL within 48 hours, or to 1.5 times an earlier value. Urine output is not checked.
Rules and published sources
ckd_epi_2009@1.0
Levey et al., Ann Intern Med 2009;150:604-12 (2009 eGFR equation, drift check) · sourceckd_epi_2021@1.0
Inker et al., N Engl J Med 2021;385:1737-49 (2021 race-free eGFR equation) · sourcekdigo_aki_2012@1.1
KDIGO 2012 guideline, Kidney Int Suppl 2012;2:1-138 (Rec 2.1.1-2.1.2, Table 2) · sourcekdigo_ckd_2024@1.1
KDIGO 2024 guideline, Kidney Int 2024;105(4S):S117-S314 (G/A categories, >3 months) · sourcekidney_compare@1.1
Two-sided comparison (this tool); ICD-10-CM guideline I.A.19; ACDIS/AHIMA compliant query practice, 2026 update · sourcekidney_exclusions@1.0
KDIGO 2024 guideline, limitations of creatinine-based eGFR (muscle mass, pregnancy, kidney replacement); local list · sourcelab_units@1.1
KDIGO 2012 and 2024 guidelines, unit conversion (creatinine 1 mg/dL = 88.4 umol/L; ACR 1 mg/mmol = 8.84 mg/g) · source
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