CKD-EPI GFR
Estimates glomerular filtration rate for CKD staging
Also written as: eGFR, CKD-EPI.
- Highest activation tier
- Recommended
- How it is scored
- Scored in code; a detected disagreeing draft value is flagged for correction
- Care settings
- Any setting
When it activates
Scribeable activates a calculator from the encounter. The CKD-EPI GFR can activate when the transcript or pasted chart context documents any of these:
- CKD staging
- Renal function assessment
- Medication dosing adjustment
- AKI evaluation
- New kidney disease diagnosis
A coded diagnosis can also activate it. ICD-10 prefixes carried by the registry: N18.
Note-type scope: it activates on notes whose subject resolves to nephrology, hospital medicine, critical care. A note that resolves to another subject does not carry it even when the clinician's specialty matches; a note with no resolvable subject (a generic consultation) falls back to the specialty match.
Inputs the note needs
3 inputs. Each is resolved from the transcript, the pasted chart context and charted labs; at this calculator’s tier a missing input is never requested, and a missing required input keeps the score out of the draft.
| Input | Type | Unit / options | Guidance |
|---|---|---|---|
| Serum creatinine | lab | mg/dL | |
| Patient age | age | ||
| Biological sex | history |
Scoring
CKD-EPI 2021 formula using creatinine, age, and sex (race-free equation)
eGFR = 142 × min(Cr/κ,1)^α × max(Cr/κ,1)^−1.200 × 0.9938^age × (1.012 if female), where Cr=Serum creatinine, age=Patient age, sex=Biological sex (CKD-EPI 2021)
Interpretation
Stage 1: >=90. Stage 2: 60-89. Stage 3a: 45-59. Stage 3b: 30-44. Stage 4: 15-29. Stage 5: <15.
Evidence
Sources carried in Scribeable's citation registry for this calculator.
- Inker LA et al. New creatinine- and cystatin C-based equations for eGFR (CKD-EPI 2021)CKD-EPI 2021 · 2021 · CKD-EPI Collaboration · Level I · link last verified 2026-03-23
- KDIGO Clinical Practice Guideline for Evaluation and Management of CKDKDIGO CKD 2024 · 2024 · KDIGO · Level 1 · link last verified 2026-03-23
How Scribeable handles it in the note
When an encounter activates the CKD-EPI GFR (its highest tier is recommended), Scribeable does not ask you for missing inputs. The score is computed in code from whatever inputs resolve from the transcript, the pasted chart context or charted labs; a computed value is written into the draft only when every required input already resolves.
The score is computed in code from the resolved inputs, not recalled by the language model. If the draft states a CKD-EPI GFR value that disagrees with the computed one, the disagreement is flagged to the second drafting pass, which is instructed to correct the score and its interpretation before you see the note.
Classified as a risk score: activated strictly, by a documented trigger, never by a permissive reading of the encounter.
See it activate on your own encounter
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