CPT 99058 Emergency Office Visit Reimbursement | OpenPayer

Summary & Overview

CPT 99058: Emergency Office Visit, Unscheduled During Regular Hours

CPT code 99058 identifies an unscheduled, urgent visit provided in the clinician’s office during regular business hours where the patient is seen immediately and ahead of scheduled appointments. This designation matters nationally because it clarifies billing when office-based clinicians divert from scheduled workflows to address urgent clinical needs, affecting practice revenue capture, encounter documentation, and payer adjudication. Key national payers commonly involved in claims with this code include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will find concise context on the clinical scenario the code represents, how it is applied in office settings, and what national payers typically consider in adjudicating these encounters. The publication summarizes applicable billing benchmarks and common policy considerations, highlights documentation elements that support appropriate use, and outlines where guidance or policy updates typically affect coverage and payment. Data not available in the input is noted where relevant. The focus is national policy and billing practice rather than state-level rules or individual payer contract specifics.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare99058CPTEmergency Office VisitOffice-Based Urgent CareBilling DocumentationOutpatient ServicesAmbulatory CarePractice Revenue

Billing Code Overview

CPT code 99058 describes a situation where a provider renders emergency services to a patient in the provider’s office during regular office hours without an appointment and ahead of other scheduled patients. This code is used when the clinical need arises spontaneously and the patient is seen immediately rather than at a scheduled visit.

Service type: Emergency office visit rendered on an unscheduled, urgent basis during regular office hours
Typical site of service: Provider’s office during regular business hours

Clinical & Coding Specifications

Clinical Context

A middle-aged patient arrives at their primary care clinic during regular office hours with an acute onset of severe abdominal pain that began an hour earlier. The patient did not have a scheduled appointment and presents with signs of distress that require immediate evaluation and treatment ahead of other scheduled patients. The clinician performs an urgent history and focused physical exam, orders point-of-care testing (e.g., urine dipstick, pregnancy test if applicable), and administers immediate treatments such as antiemetic medication and analgesia. Based on findings, the provider documents the emergency visit in the medical record, communicates plan of care, and either discharges with instructions, schedules expedited follow-up, or arranges transfer to an emergency department for higher-level care. The clinic documents time of arrival, reason for unscheduled visit, triage findings, services rendered, and clinical necessity for seeing the patient out of order to support use of 99058.

Coding Specifications

Modifier	Description	When to Use
`25`	Significant, separately identifiable evaluation and management service by the same physician on the same day of a procedure or other service	Use when a distinct E/M visit occurs during the unscheduled emergency encounter in the office

CPT 98984: Remote Therapeutic Monitoring—Respiratory Devices (2–15 Days)

CPT-99027-ON-CALL-AVAILABILITY-HOSPITAL

CPT 99027: One-Hour On-Call Availability for Hospital Services

CPT-99026-HOSPITAL-ON-CALL-AVAILABILITY-1-HOUR

CPT 99026: Hospital On-Call Availability, One Hour

CPT-99082-PROVIDER-TRAVEL-ACCOMPANYING-PATIENT-TRANSPORT

CPT 99082: Provider Travel to Accompany Patient in Transport

CPT-99000-SPECIMEN-PREPARATION-AND-TRANSPORT-OFFICE

CPT 99000: Specimen Preparation and Transport from Office

CPT-99053-OVERNIGHT-SERVICES-24-HOUR-FACILITY

CPT 99053: Overnight Services at 24-Hour Facility

CPT-99071-PATIENT-EDUCATION-MATERIALS-PROVIDER-SUPPLIED

CPT 99071: Provider-Supplied Patient Educational Materials

CPT-99002-ORTHOTIC-PROSTHETIC-DEVICE-PROVISION-AND-FITTING

CPT 99002: Orthotic, Prosthetic, and Medical Device Provision and Fitting

CPT-99051-AFTER-HOURS-OFFICE-EVALUATION

CPT 99051: After-Hours Office Evaluation and Management

CPT-99075-MEDICO-LEGAL-RECORD-REVIEW-AND-SWORN-OPINION

CPT 99075: Medical Record Review and Sworn Medical Opinion

Showing 1–10 of 21

Taxonomy Code	Specialty	Notes
`207Q00000X`	Family Medicine	Most common in-office providers managing unscheduled acute complaints
`208D00000X`	General Internal Medicine	Common for adult acute unscheduled evaluations in primary care
`261QM0800X`	Emergency Medicine	Providers who may render urgent care-level emergency services in office settings
`207L00000X`	Pediatric Medicine	For unscheduled urgent visits for children in office settings
`103K00000X`	Nurse Practitioner	Advanced practice clinicians frequently provide same-day emergency office services

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`R10.9`	Unspecified abdominal pain	Common acute presenting complaint that prompts unscheduled emergency office evaluation
`R07.9`	Chest pain, unspecified	Acute chest pain often requires immediate in-office triage and management ahead of scheduled patients
`N39.0`	Urinary tract infection, site not specified	Acute urinary symptoms frequently trigger same-day unscheduled visits
`J06.9`	Acute upper respiratory infection, unspecified	Sudden onset respiratory symptoms prompting urgent office assessment
`S39.012A`	Strain of muscle, fascia and tendon of lower back, initial encounter	Acute musculoskeletal injuries presenting urgently in the office
`R51`	Headache	Severe or sudden headache may necessitate immediate evaluation in-office
`A09`	Infectious gastroenteritis and colitis, unspecified	Acute GI illness leading to urgent in-office assessment

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99201`	Office or other outpatient visit for the evaluation and management of a new patient, straightforward medical decision making	May be used when the unscheduled patient is a new patient and the visit meets E/M criteria for a brief evaluation in-office
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, low to moderate complexity	Commonly billed for the focused evaluation portion of an unscheduled urgent office visit when `99058` is used to denote emergency access
`99058`	Emergency services rendered in the provider’s office during regular office hours without an appointment and ahead of scheduled patients	Primary code describing the emergent nature and ordering priority of the visit in the office schedule
`93010`	Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only	Often performed immediately in-office during an acute cardiac or chest pain presentation accompanying the emergency visit
`81002`	Urinalysis, non-automated, without microscopy	Point-of-care test commonly performed during urgent unscheduled office visits for suspected urinary or abdominal complaints
`99070`	Supplies and materials, provided by the physician over and above those usually included with the office visit	Used when additional expendable supplies are required during the unscheduled emergency visit

OpenPayer