Emergency Medicine Coding Hub

Emergency department evaluation and management leveling (99281-99285), critical care services (99291-99292), and urgent trauma resuscitation.

Top Diagnoses: 6 Core Codes

Top Procedures: 7 Core Procedures

Auditing Focus: High Priority

Data Source: CMS & Clinical Society Guidelines

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Core Specialty Coding Directive

What are the critical billing rules for Emergency Medicine Coding Hub? Emergency department E/M codes do not differentiate between new and established patients. Critical care (99291) requires a minimum of 30 minutes of direct physician critical care time excluding separately billable procedures.

Updated for current Medicare Part B coverage policies and NCCI quarterly edit tables.

Frequently Billed ICD-10-CM Diagnosis Codes

Click any diagnosis code to view complete CDC tabular guidelines, Excludes 1 exclusions, and billability status:

                        R07.9 →
                    

Chest pain, unspecified

                        R10.9 →
                    

Unspecified abdominal pain

                        R55 →
                    

Syncope and collapse

                        S06.0X0A →
                    

Concussion without loss of consciousness, initial encounter

                        T79.A0XA →
                    

Compartment syndrome, unspecified, initial encounter

                        J96.00 →
                    

Acute respiratory failure, unsp w hypoxia or hypercapnia

Common CPT & HCPCS Procedure Codes

Code	Description	Reimbursement Bridge
99283	Specialty procedure or diagnostic service	Standard PFS Code
99284	Specialty procedure or diagnostic service	Standard PFS Code
99285	Specialty procedure or diagnostic service	Standard PFS Code
99291	Specialty procedure or diagnostic service	Standard PFS Code
99292	Specialty procedure or diagnostic service	Standard PFS Code
12001	Specialty procedure or diagnostic service	Standard PFS Code
31500	Specialty procedure or diagnostic service	Standard PFS Code

Essential Billing Modifiers for Emergency Medicine Coding Hub

Modifier 25 Guidelines → Modifier 59 Guidelines → Modifier 26 Guidelines →

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High-Risk Documentation & Audit Traps

Emergency department E/M codes do not differentiate between new and established patients. Critical care (99291) requires a minimum of 30 minutes of direct physician critical care time excluding separately billable procedures.

Audit Defense Recommendation: Medical records must contain explicit physician-authored clinical notes demonstrating medical necessity. Review NCCI PTP edits prior to submission using our free NCCI Edit Checker.

AAPC CPC Exam Focus

Certification Exam Key Concepts

Tests identifying high complexity medical decision making for 99285 and time tracking for critical care add-on code 99292.

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