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2023 Emergency Medicine Coding Guide
Rates level of service required in emergency medicine.
2HELPS2B Score
Estimates seizure risk in acutely ill patients undergoing continuous EEG (cEEG).
4 A’s Test for Delirium Screening
Diagnoses delirium in older patients.
4-Level Pulmonary Embolism Clinical Probability Score (4PEPS)
Rules out PE based on clinical criteria.
4C Mortality Score for COVID-19
Predicts in-hospital mortality in patients admitted with COVID-19.
4Ts Score for Heparin-Induced Thrombocytopenia
Differentiates patients with HIT from those with other causes of thrombocytopenia.
6 Minute Walk Distance
Calculates reference values for distance walked, as a measure of functional status.
A-a O₂ Gradient
Assesses for degree of shunting and V/Q mismatch.
AAP Pediatric Hypertension Guidelines
Diagnoses hypertension in pediatric patients; official guideline of the American Academy of Pediatrics.
Abbey Pain Scale for Dementia Patients
Assesses pain in patients with advanced dementia.
Abbreviated Injury Score (AIS) for Inhalation Injury
Classifies inhalation injury severity based on bronchoscopic findings.
Abbreviated Mental Test (AMT-10)
Assesses mental impairment in elderly patients.
Abbreviated Mental Test 4 (AMT-4)
Assesses mental impairment in elderly patients.
ABC Score for Massive Transfusion
Predicts need for massive transfusion in trauma patients.
ABC/2 Formula for Intracerebral Hemorrhage Volume
Predicts volume of intracranial hemorrhage from CT measurements.
ABCD² Score for TIA
Estimates the risk of stroke after a suspected transient ischemic attack (TIA).
ABIC Score for Alcoholic Hepatitis
Predicts survival in alcoholic hepatitis.
Abnormal Involuntary Movement Scale (AIMS)
Measures involuntary movements of tardive dyskinesia (TD).
Absolute Lymphocyte Count (ALC)
Assesses number of lymphocytes and predicts CD4 count.
Absolute Neutrophil Count (ANC)
Frequently used to assess neutropenic fever in chemotherapy patients.
Absolute Reticulocyte Count & Reticulocyte Index
Assesses appropriate response to anemia, frequently in sickle cell patients.
Abuse Assessment Screen (AAS)
Detects domestic abuse (intimate partner violence) in pregnant and nonpregnant women in healthcare settings.
ACC/AHA Heart Failure Staging
Describes stages of heart failure and provides recommendations for therapy by stage.
ACEF II Risk Score for Cardiac Surgery
Predicts 30-day mortality after elective or emergency cardiac surgery.
ACEP ED COVID-19 Management Tool
Emergency department classification and management tool for adult patients (greater than 18 years old) with suspected or confirmed SARS-CoV-2 (v2.0, updated January 13, 2022).
Acetaminophen Overdose and NAC Dosing
Calculates PO/IV NAC dosing for acetaminophen overdose (and nomogram to determine toxic 4 hour level).
ACR/EULAR 2010 Rheumatoid Arthritis Classification Criteria
Diagnoses rheumatoid arthritis (RA) in patients with undifferentiated inflammatory synovitis.
ACR/EULAR Gout Classification Criteria
Provides formal diagnostic criteria for gout.
ACTION ICU Score for Intensive Care in NSTEMI
Predicts risk of NSTEMI complications requiring ICU care.
Acute Decompensated Heart Failure National Registry (ADHERE) Algorithm
Predicts in-hospital mortality in patients with heart failure (HF).
Acute Gout Diagnosis Rule
Risk stratifies for gout vs non-gout arthritis and helps determine which patients benefit most from joint aspiration.
Acute Renal Failure after Cardiac Surgery (Thakar Score)
Predicts risk of acute renal failure (ARF) requiring dialysis after cardiac surgery.
ADAPT Protocol for Cardiac Event Risk
Assesses chest pain patients at 2 hours for risk of cardiac event.
Additional Nodal Metastasis Nomogram
Predicts likelihood of breast cancer with sentinel lymph node metastasis has also spread to additional lymph nodes.
Adult Self-Report Scale (ASRS v1.1) for ADHD
Diagnoses adult ADHD.
Adverse Childhood Experiences (ACE) Score
Screens for adverse childhood experiences.
Age-Adjusted D-dimer for Venous Thromboembolism (VTE)
Adjusts D-dimer cutoffs by age to help rule out VTE.
Age-Adjusted ESR/CRP for Rheumatoid Arthritis
Calculates age-adjusted ESR and CRP in adult patients with rheumatoid arthritis.
AIMS65 Score for Upper GI Bleeding Mortality
Determines risk of in-hospital mortality from upper GI bleeding.
AKIN Classification for Acute Kidney Injury (AKI)
Classifies severity of acute kidney injury, similar to RIFLE Criteria.
Alberta Stroke Program Early CT Score (ASPECTS)
Determines MCA stroke severity using available CT data.
ALBI (Albumin-Bilirubin) Grade for Hepatocellular Carcinoma (HCC)
Predicts survival in HCC patients.
ALT-70 Score for Cellulitis
Predicts likelihood of lower extremity cellulitis over other diagnoses.
Altitude-Adjusted PERC Rule
Rules out PE if no criteria are present; includes SaO2 adjustment for altitude.
Alvarado Score for Acute Appendicitis
Predicts likelihood of appendicitis diagnosis.
American Diabetes Association (ADA) Risk Calculator
Predicts risk of undiagnosed diabetes to determine who should be screened.
American University of Beirut (AUB)-HAS2 Cardiovascular Risk Index
Stratifies cardiovascular risk of patients undergoing noncardiac surgery.
American Urological Association Symptom Index (AUA-SI)/International Prostate Symptom Score (IPSS)
Measures severity of benign prostatic hyperplasia (BPH) symptoms.
Anion Gap
Evaluates states of metabolic acidosis.
Ankylosing Spondylitis Disease Activity Score with CRP (ASDAS-CRP)
Stratifies severity of ankylosing spondylitis (AS) using clinical and laboratory data, specifically CRP.
Ankylosing Spondylitis Disease Activity Score with ESR (ASDAS-ESR)
Stratifies severity of ankylosing spondylitis (AS) using clinical and laboratory data, specifically ESR.
Antivenom Dosing Algorithm
Doses antivenom (CroFab only, not Anavip) for pit viper snakebites.
Aortic Dissection Detection Risk Score (ADD-RS)
Rules out aortic dissection.
APACHE II Score
Estimates ICU mortality
Apfel Score for Postoperative Nausea and Vomiting
Predicts risk of postoperative nausea and vomiting (PONV).
APGAR Score
Assesses neonates 1 and 5 minutes after birth.
Appendicitis Inflammatory Response (AIR) Score
Diagnoses appendicitis based on clinical and laboratory findings.
ARISCAT Score for Postoperative Pulmonary Complications
Predicts risk of pulmonary complications after surgery, including respiratory failure.
Arterial Blood Gas (ABG) Analyzer
Interprets ABG.
ASA Physical Status/ASA Classification
Classifies health of patients prior to surgery.
ASAS Criteria for Axial Spondyloarthritis (SpA)
Diagnoses axial spondyloarthritis according to Assessment of Spondyloarthritis International Society (ASAS) criteria.
ASAS Criteria for Peripheral SpondyloArthritis (SpA)
Diagnoses peripheral spondyloarthritis according to Assessment of SpondyloArthritis International Society (ASAS) criteria.
ASCOD Algorithm for Ischemic Stroke
Assigns phenotype in patients with ischemic stroke of uncertain causes.
ASCVD (Atherosclerotic Cardiovascular Disease) 2013 Risk Calculator from AHA/ACC
Determines 10-year risk of heart disease or stroke.
ASCVD (Atherosclerotic Cardiovascular Disease) Risk Algorithm including Known ASCVD from AHA/ACC
Determines 10-year risk of heart disease or stroke and provides statin recommendations.
AST to Platelet Ratio Index (APRI)
Determines the likelihood of hepatic fibrosis and cirrhosis in patients with hepatitis C.
Asthma Predictive Index (API)
Determines likelihood of pediatric patients developing childhood asthma.
ASTRAL Score for Ischemic Stroke
Predicts 90-day poor outcome in patients with acute ischemic stroke.
Asymptomatic Myeloma Prognosis
Predicts risk of progression of asymptomatic (smoldering) multiple myeloma to active myeloma or amyloidosis.
ATLAS Score for Clostridium Difficile Infection
Predicts response to therapy in patients with C. diff.
ATRIA Bleeding Risk Score
Determines bleeding risk for patients on warfarin.
ATRIA Stroke Risk Score
Determines stroke risk in patients with atrial fibrillation.
Atropine Dosing for Cholinesterase Inhibitor Toxicity
Doses atropine for cholinesterase inhibitor toxicity (prescribed drugs, nerve gas, insecticides).
AUDIT-C for Alcohol Use
Identifies at-risk drinkers (i.e., binge drinking) who may not be alcohol-dependent.
Australian Type 2 Diabetes Risk (AUSDRISK) Assessment Tool
Estimates risk of developing type 2 diabetes, mainly in Australian patients.
AWOL Score for Delirium
Predicts risk of delirium during hospitalization.
Bacterial Meningitis Score for Children
Rules out bacterial meningitis.
BAP-65 Score for Acute Exacerbation of COPD
Predicts mortality in acute COPD exacerbation.
Barcelona-Clinic Liver Cancer (BCLC) Staging Classification and Treatment Guidelines
Determines progression of disease and proper treatment course for patients with HCC.
BARD Score for NAFLD Fibrosis
Predicts risk of advanced fibrosis in NAFLD patients.
Barnes Jewish Hospital Stroke Dysphagia Screen
Assesses ability to swallow without aspiration after stroke.
Barthel Index for Activities of Daily Living (ADL)
Assesses functional independence, generally in stroke patients.
Basal Energy Expenditure
Calculates daily energy expenditure.
Basic Statistics Calc
Calculates common epidemiologic values for diagnostic tests and treatments.
Bastion Classification of Lower Limb Blast Injuries
Stratifies blast injuries of lower limbs to guide treatment.
Behavioral Observational Pain Scale (BOPS) for Post-Op Pediatric Pain
Quantifies post-operative pain for children aged 1-7 years.
Behavioral Pain Scale (BPS) for Pain Assessment in Intubated Patients
Quantifies pain in intubated patients.
Benzodiazepine Conversion Calculator
Provides equivalents between different benzodiazepines.
Berlin Criteria for Acute Respiratory Distress Syndrome
Provides diagnostic criteria for acute respiratory distress syndrome (ARDS).
Bicarbonate Deficit
Calculates the total body bicarbonate deficit.
Binet Staging System for Chronic Lymphocytic Leukemia (CLL)
Stages chronic lymphocytic leukemia, similar to Rai Staging System.
BISAP Score for Pancreatitis Mortality
Predicts mortality risk in pancreatitis with fewer variables than Ranson's.
Bishop Score for Vaginal Delivery and Induction of Labor
Predicts likelihood of successful vaginal delivery.
Blast Lung Injury Severity Score
Stratifies primary blast lung injuries into three categories to guide ventilator treatment.
Blood Volume Calculation
Calculates total blood volume, red blood cell volume, and plasma volume.
BODE Index for COPD Survival
Predicts survival in COPD patients.
Body Fluid Balance Calculator by Inputs and Outputs
Calculates fluid balance from sodium concentrations which indicate net 0.9% saline, and free water losses (GI, urine, etc) and gains (IV fluids, PO, etc).
Body Mass Index (BMI) and Body Surface Area (BSA)
Calculates body mass index and body surface area.
Bova Score for Pulmonary Embolism Complications
Predicts 30-day risk of PE-related complications in hemodynamically stable patients.
Braden Score for Pressure Ulcers
Identifies patients at risk for pressure ulcers.
Brain Metastasis Velocity (BMV) Model
Calculates rate of distant brain failure after stereotactic radiosurgery for brain metastasis.
Brescia-COVID Respiratory Severity Scale (BCRSS)/Algorithm
Step-wise management approach to COVID-19 patients based on clinical severity as of June 2, 2020.
Brief Alcohol Withdrawal Scale (BAWS)
Assesses alcohol withdrawal symptoms.
Brief Resolved Unexplained Events (BRUE) Criteria for Infants
Classifies unexplained events and replaces the Apparent Life Threatening Events (ALTE) classification.
Brief Resolved Unexplained Events 2.0 (BRUE 2.0) Criteria for Infants
Classifies unexplained events, improves on the BRUE Criteria.
Bristol Stool Form Scale
Classifies stool (correlates with intestinal transit time).
Brugada Criteria for Ventricular Tachycardia
Distinguishes ventricular tachycardia from supraventricular tachycardia.
Burch-Wartofsky Point Scale (BWPS) for Thyrotoxicosis
Predicts likelihood that biochemical thyrotoxicosis is thyroid storm.
Bush-Francis Catatonia Rating Scale
Assesses severity of catatonia.
BWH Egg Freezing Counseling Tool (EFCT)
Predicts likelihood of live birth for elective egg freezing in women.
CAGE Questions for Alcohol Use
Screens for excessive drinking and alcoholism.
CAHP (Cardiac Arrest Hospital Prognosis) Score
Predicts poor prognosis after out-of-hospital cardiac arrest and guides utility of cardiac catheterization.
Calcium Correction for Hypoalbuminemia
Calculates a corrected calcium level for patients with hypoalbuminemia.
Cambridge Diabetes Risk Score
Predicts risk of having previously undiagnosed type 2 diabetes.
Canadian C-Spine Rule
Clinically clears cervical spine fracture without imaging.
Canadian Cardiovascular Society (CCS) Angina Grade
Classifies severity of angina.
Canadian CT Head Injury/Trauma Rule
Clears head injury without imaging.
Canadian Syncope Risk Score
Predicts 30-day serious adverse events in patients presenting with syncope.
Canadian Transient Ischemic Attack (TIA) Score
Identifies risk of stroke in the next 7 days in patients who experienced symptoms of TIA.
Cancer and Aging Research Group Chemotherapy Toxicity Tool (CARG-TT)
Estimates the risk of severe chemotherapy-related side effects (Grade 3 or greater toxicity) in older cancer patients.
Caprini Score for Venous Thromboembolism (2005)
Stratifies risk of VTE in surgical patients.
Cardiac Anesthesia Risk Evaluation Score (CARE)
Predicts mortality and morbidity after cardiac surgery.
Cardiac Output (Fick’s Formula)
Calculates cardiac output, cardiac index, and stroke volume.
CART (Cardiac Arrest Risk Triage) Score
Predicts risk of in-hospital cardiac arrest.
CASPAR Criteria for Psoriatic Arthritis
Provides criteria for psoriatic arthritis diagnosis.
CATCH (Canadian Assessment of Tomography for Childhood Head injury) Rule
Predicts clinically significant head injuries in children.
CEDOCS Score for Emergency Department Overcrowding
Estimates severity of overcrowding in community emergency departments.
Centor Score (Modified/McIsaac) for Strep Pharyngitis
Estimates probability that pharyngitis is streptococcal, and suggests management course.
Cerebral Perfusion Pressure
Calculates blood flow to the brain.
CHA₂DS₂-VASc Score for Atrial Fibrillation Stroke Risk
Calculates stroke risk for patients with atrial fibrillation, possibly better than the CHADS₂ Score.
CHADS₂ Score for Atrial Fibrillation Stroke Risk
Estimates stroke risk in patients with atrial fibrillation.