Calculate the 2010 ACR/EULAR RA classification score from joint involvement, RF/anti-CCP, acute-phase reactants, and symptom duration. Free online tool for rheumatology classification (≥6 of 10 points when entry criteria apply).

Apply the 2012 provisional ACR/EULAR PMR criteria: mandatory features plus clinical scoring (≥4 without ultrasound, ≥5 with ultrasound). Free rheumatology classification tool.

Apply the 2015 ACR/EULAR gout criteria: MSU/tophus sufficient criterion or weighted clinical, lab, and imaging score (≥8 of 23 when entry criteria apply). Free rheumatology classification tool.

Sum the 2016 ACR/EULAR weighted items: labial gland biopsy, anti-SSA (Ro), ocular staining, Schirmer test, and unstimulated saliva flow (≥4 of 9 when inclusion/exclusion rules apply). Free rheumatology classification tool.

Calculate the 2018 Leibovich score for non-metastatic clear cell RCC using pathologic T/N stage, tumor size, nuclear grade (Fuhrman or ISUP), and coagulative necrosis. Risk groups with metastasis-free and cancer-specific survival estimates.

Classify infective endocarditis using the 2023 Duke–International Society for Cardiovascular Infectious Diseases (ISCVID) criteria: pathologic definite IE and clinical major/minor criteria for definite or possible IE.

Support emergency department E/M coding (99282–99285) under 2023 CPT rules: enter Problems, Data, and Risk MDM column levels and derive the overall level via the median mapping to CPT.

Calculate the 2HELPS2B score from continuous EEG: BIRDs (+2), LPD/LRDA/BIPD, seizure history, sporadic epileptiform discharges, frequency >2 Hz, and plus features (+1 each). Seizure risk stratification for hospitalized patients (Struck et al., JAMA Neurol. 2017).

Score the 4AT (0–12): Alertness, AMT4, Attention (months backwards), and Acute change/fluctuation. Interpretation bands 0, 1–3, and ≥4 per official guidance (www.the4at.com).

Calculate the ISARIC 4C score (0–21) from age, sex, comorbidities, respiratory rate, room air SpO₂, GCS, urea, and CRP. Shows observed in-hospital mortality from the UK validation cohort (Knight et al., BMJ 2020).

Calculate 4PEPS from 13 ED items (−2 to +5): age, sex, vitals, symptoms, and risk factors. Four bands (very low, low, moderate, high) tie to the published D-dimer and imaging strategy (Roy et al., JAMA Cardiol. 2021).

Score thrombocytopenia, timing, thrombosis/sequelae, and other causes (each 0–2; total 0–8) for HIT pretest probability per Lo et al. / published 4Ts criteria.

Predicted six-minute walk distance from Enright & Sherrill (1998) using age, height, weight, and sex; optional percent predicted when you enter observed distance (m or ft).

Calculate ABCD² score for transient ischemic attack (TIA) stroke risk assessment. Clinical decision support tool for TIA risk stratification and stroke prevention.

Calculate Alvarado Score for acute appendicitis diagnosis. Free online calculator for appendicitis risk assessment and clinical decision support.

Calculate APACHE II (Acute Physiology and Chronic Health Evaluation II) score for disease severity assessment and mortality risk prediction in ICU patients. Assess acute physiology, age, and chronic health conditions.

Calculate APGAR score (Appearance, Pulse, Grimace, Activity, Respiration) from 0–10 for newborn assessment at 1 and 5 minutes.

Analyze arterial blood gas (ABG) results instantly. Interpret acid-base balance, respiratory function, and metabolic status. Calculate anion gap and assess compensation.

Calculate 10-year ASCVD risk using AHA/ACC Pooled Cohort Equations for cardiovascular risk assessment.

Calculate Body Mass Index instantly with health insights and BMI category classification.

Calculate corrected calcium levels for patients with abnormal albumin using the Payne formula.

Calculate Canadian CT Head Rule for minor head injury assessment. Clinical decision support tool for determining CT scan necessity in patients with head trauma.

Calculate Centor Score (Modified/McIsaac) for streptococcal pharyngitis risk assessment. Clinical decision support tool for sore throat evaluation and antibiotic treatment decisions.

Calculate CHA₂DS₂-VASc score for atrial fibrillation stroke risk assessment and anticoagulation decisions.

Calculate Child-Pugh score for cirrhosis mortality risk assessment. Clinical decision support tool for liver disease severity evaluation and prognosis.