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CPT 99499: Unlisted Evaluation and Management Service

Headline: CPT code 99499: Catch-all for Unlisted Evaluation and Management Services

Lead: CPT code 99499 is the designated unlisted evaluation and management (E/M) CPT code used when an E/M encounter does not fit any specific CPT E/M descriptor. It matters nationally because it provides a billing pathway for atypical or novel E/M encounters and supports clinical documentation of services that fall outside standard code definitions.

Overview: CPT code 99499 represents E/M services without an exact CPT match. This code is relevant across professional care sites — including office visits, outpatient clinics, emergency departments, and inpatient consultation settings — wherever clinicians deliver E/M care that lacks a specific CPT code. The analysis covers primary payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

What readers will learn: Readers will find a concise explanation of the code’s clinical scope and service contexts, a review of payer coverage patterns and common modifiers used with unlisted E/M reporting, and practical considerations for documentation and claim submission. The publication summarizes available benchmarks, highlights policy or coverage considerations affecting use of unlisted E/M reporting, and situates 99499 within the broader E/M coding framework for national audiences.

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Billing Code Overview

CPT code 99499 is an unlisted evaluation and management service code used to report E/M services for which no specific CPT code exists. It captures unique or uncommon evaluation and management encounters that do not fit established CPT E/M descriptions.

Service type: Evaluation and Management (unlisted E/M service)
Typical site of service: Professional settings where E/M services are delivered, including office, outpatient clinic, emergency department, inpatient consultation settings, and other venues when no specific E/M code applies.

Data not available in the input.

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CPT 99499: Unlisted Evaluation and Management Service

Headline: CPT code 99499: Catch-all for Unlisted Evaluation and Management Services

Data limitations: Data not available in the input.

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Get alerted when payer policies referencing 99499 are released or updated.

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Billing Code Overview

Service type: Evaluation and Management (unlisted E/M service)
Typical site of service: Professional settings where E/M services are delivered, including office, outpatient clinic, emergency department, inpatient consultation settings, and other venues when no specific E/M code applies.

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A patient presents for an evaluation and management service that does not have a specific CPT code to describe the complexity or setting of care. Typical examples include a complex perioperative assessment not otherwise codified, a novel consultation for a multi-system diagnostic dilemma, or a lengthy care coordination visit after an unusual adverse event. The typical site of service is an outpatient clinic, inpatient hospital unit, emergency department, or surgical center when the clinical activity cannot be reported with an existing E/M or procedure code.

A realistic scenario: A 68-year-old patient after an unusual perioperative complication requires an extended multidisciplinary physician evaluation to assess persistent hypotension, atypical neurologic deficits, and suspected medication interactions. The attending physician documents a comprehensive history, extended examination, coordination with pharmacy and neurology, and devises an individualized management plan over a prolonged visit. No specific CPT code captures the combination of extended E/M, coordination, and procedural oversight; the provider reports 99499 for the unlisted evaluation and management service. Usual workflow includes chart review, direct patient evaluation, documentation of medical decision making that exceeds standard visit codes, and attaching supporting documentation to justify medical necessity.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When the work, time, and intensity substantially exceed typical services for which `99499` is reported and payor policies permit an enhanced payment rationale.
`23`	Unusual anesthesia	When the E/M service is performed during a period of unexpected anesthesia-related complication that justifies separate reporting.
`25`	Significant, separately identifiable E/M service	When an unrelated E/M service is performed on the same day as another procedure and must be reported in addition to the procedure using `99499` as appropriate.
`26`	Professional component	When reporting only the professional component of a service included in a global or technical setting in conjunction with `99499`.
`52`	Reduced services	When the service described by `99499` was partially reduced or discontinued and payment should reflect reduced complexity or time.
`53`	Discontinued procedure	When the planned service is started but terminated due to extenuating circumstances and `99499` documents the evaluation portion.
`62`	Two surgeons	When two surgeons share responsibility for a complex, uncoded evaluation and each documents distinct, reportable services related to `99499`.
`80`	Assistant surgeon	When an assistant surgeon documents substantial participation in an uncoded intraoperative evaluation/management activity tied to `99499`.
`95`	Synchronous telemedicine service rendered via real-time interactive audio and video	When `99499` is provided via live telemedicine and the payor recognizes telehealth modifier reporting for unlisted E/M.
`GT`	Via interactive audio and video telecommunications systems	Alternative telehealth modifier when allowed by payor rules for `99499`.
`52`	Reduced services	When the evaluation documented under `99499` was partially completed (duplicate entry to emphasize limited use).
`93`	Complex high-risk surgical procedures requiring special attention	When `99499` documents an unusual evaluation in direct relation to a complex, high-risk surgical event (payor policies vary).
`25`	Significant, separately identifiable E/M service	(repeat reflects common use with concurrent procedures; apply only once per claim)

Taxonomy Code	Specialty	Notes
207Q00000X	General Surgery	Surgeons may report `99499` for atypical perioperative evaluations and management not described by existing codes.
207RC0000X	Internal Medicine	Hospitalists and internists commonly perform complex inpatient evaluations that require unlisted E/M reporting.
208000000X	Family Medicine	Primary care physicians may use `99499` for atypical outpatient evaluation services that lack a specific code.
2084P0800X	Emergency Medicine	Emergency physicians may report `99499` for unusual ED evaluation scenarios that exceed standard ED E/M descriptors.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
Data not available in the input.	Data not available in the input.	Data not available in the input.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99221`	Initial hospital inpatient care, per day, for the evaluation and management of a patient	May be used for standard inpatient initial E/M services; `99499` is used only when no specific code applies to the evaluation provided.
`99283`	Emergency department visit for the evaluation and management of a patient, low to moderate severity	Typical ED E/M code; `99499` may be used if the ED evaluation is atypical and not described by standard ED codes.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Common outpatient E/M code; `99499` applies when the service complexity or content is not represented by existing office visit codes.
`99354`	Prolonged service in the office or outpatient setting, with direct patient contact, first hour	Prolonged services often accompany complex evaluations; when prolonged care is unusual and not captured by existing codes, `99499` may be used alongside or instead, per payor rules.
`99024`	Postoperative follow-up visit global period, included in the surgical package	When postoperative issues require an atypical evaluation outside the global package and no specific code exists, `99499` may be reported if allowed by policy.

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When the work, time, and intensity substantially exceed typical services for which `99499` is reported and payor policies permit an enhanced payment rationale.
`23`	Unusual anesthesia	When the E/M service is performed during a period of unexpected anesthesia-related complication that justifies separate reporting.
`25`	Significant, separately identifiable E/M service	When an unrelated E/M service is performed on the same day as another procedure and must be reported in addition to the procedure using `99499` as appropriate.
`26`	Professional component	When reporting only the professional component of a service included in a global or technical setting in conjunction with `99499`.
`52`	Reduced services	When the service described by `99499` was partially reduced or discontinued and payment should reflect reduced complexity or time.
`53`	Discontinued procedure	When the planned service is started but terminated due to extenuating circumstances and `99499` documents the evaluation portion.
`62`	Two surgeons	When two surgeons share responsibility for a complex, uncoded evaluation and each documents distinct, reportable services related to `99499`.
`80`	Assistant surgeon	When an assistant surgeon documents substantial participation in an uncoded intraoperative evaluation/management activity tied to `99499`.
`95`	Synchronous telemedicine service rendered via real-time interactive audio and video	When `99499` is provided via live telemedicine and the payor recognizes telehealth modifier reporting for unlisted E/M.
`GT`	Via interactive audio and video telecommunications systems	Alternative telehealth modifier when allowed by payor rules for `99499`.
`52`	Reduced services	When the evaluation documented under `99499` was partially completed (duplicate entry to emphasize limited use).
`93`	Complex high-risk surgical procedures requiring special attention	When `99499` documents an unusual evaluation in direct relation to a complex, high-risk surgical event (payor policies vary).
`25`	Significant, separately identifiable E/M service	(repeat reflects common use with concurrent procedures; apply only once per claim)

Taxonomy Code	Specialty	Notes
207Q00000X	General Surgery	Surgeons may report `99499` for atypical perioperative evaluations and management not described by existing codes.
207RC0000X	Internal Medicine	Hospitalists and internists commonly perform complex inpatient evaluations that require unlisted E/M reporting.
208000000X	Family Medicine	Primary care physicians may use `99499` for atypical outpatient evaluation services that lack a specific code.
2084P0800X	Emergency Medicine	Emergency physicians may report `99499` for unusual ED evaluation scenarios that exceed standard ED E/M descriptors.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
Data not available in the input.	Data not available in the input.	Data not available in the input.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99221`	Initial hospital inpatient care, per day, for the evaluation and management of a patient	May be used for standard inpatient initial E/M services; `99499` is used only when no specific code applies to the evaluation provided.
`99283`	Emergency department visit for the evaluation and management of a patient, low to moderate severity	Typical ED E/M code; `99499` may be used if the ED evaluation is atypical and not described by standard ED codes.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Common outpatient E/M code; `99499` applies when the service complexity or content is not represented by existing office visit codes.
`99354`	Prolonged service in the office or outpatient setting, with direct patient contact, first hour	Prolonged services often accompany complex evaluations; when prolonged care is unusual and not captured by existing codes, `99499` may be used alongside or instead, per payor rules.
`99024`	Postoperative follow-up visit global period, included in the surgical package	When postoperative issues require an atypical evaluation outside the global package and no specific code exists, `99499` may be reported if allowed by policy.

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Jul 29, 2026.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Jul 29, 2026.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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CPT 99499: Unlisted Evaluation and Management Service

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Billing Code Overview

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CPT 99499: Unlisted Evaluation and Management Service

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

References

CPT 99499: Unlisted Evaluation and Management Service

Sign up for cpt 99499 policy alerts

Billing Code Overview

CPT 99499: Unlisted Evaluation and Management Service

Sign up for cpt 99499 policy alerts

Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

What is CPT 99499 and when is it used?

What documentation and workflow are expected when using 99499?

Which modifiers are commonly used with 99499 and when might they apply?

How does 99499 relate to standard E/M and prolonged service codes like 99213, 99283, or 99354?

Which payers cover 99499 and where can I find payer-specific rules?

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

What is CPT 99499 and when is it used?

What documentation and workflow are expected when using 99499?

Which modifiers are commonly used with 99499 and when might they apply?

How does 99499 relate to standard E/M and prolonged service codes like 99213, 99283, or 99354?

Which payers cover 99499 and where can I find payer-specific rules?

References