APACHE II Score
Estimates ICU mortality based on physiologic parameters
- Highest activation tier
- Recommended
- How it is scored
- Scored in code; a detected disagreeing draft value is flagged for correction
- Care settings
- ICU
When it activates
Scribeable activates a calculator from the encounter. The APACHE II Score can activate when the transcript or pasted chart context documents any of these:
- ICU admission
- ICU prognostication
- Research/quality benchmarking
- Goals of care discussion
Note-type scope: it activates on notes whose subject resolves to critical care, emergency medicine, hospital medicine. 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
14 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 |
|---|---|---|---|
| Temperature | vital | °C | |
| Mean arterial pressure | vital | mmHg | |
| Heart rate | vital | bpm | |
| Respiratory rate | vital | /min | |
| PaO2 or A-a gradient | lab | mmHg | |
| Arterial pH | lab | ||
| Serum sodium | lab | mEq/L | |
| Serum potassium | lab | mEq/L | |
| Serum creatinine | lab | mg/dL | |
| Hematocrit | lab | % | |
| WBC count | lab | ×10⁹/L | |
| GCS | exam | ||
| Age | age | ||
| Chronic health status | history |
Scoring
12 physiologic variables + age points + chronic health points
APS (12 physiologic vars: temp Temperature, MAP Mean arterial pressure, HR Heart rate, RR Respiratory rate, oxygenation PaO2 or A-a gradient, pH Arterial pH, Na Serum sodium, K Serum potassium, Cr Serum creatinine, Hct Hematocrit, WBC WBC count, GCS GCS) + age points(Age) + chronic health points(Chronic health status)
Interpretation
0-4: ~4% mortality. 10-14: ~15%. 20-24: ~40%. 30-34: ~73%. >34: ~85%.
Evidence
Sources carried in Scribeable's citation registry for this calculator.
- Knaus WA et al. APACHE II: a severity of disease classification systemKnaus et al. (APACHE II) 1985 · 1985 · link last verified 2026-03-23
How Scribeable handles it in the note
When an encounter activates the APACHE II Score (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 APACHE II Score 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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