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CPT 99366: Interdisciplinary Team Conference with Patient Present

CPT code 99366 denotes a multidisciplinary medical team conference conducted with the patient present to discuss diagnosis, prognosis, and coordinated treatment planning when more than one medical specialty is involved. This service supports complex care coordination for patients with multisystem conditions or those requiring input from multiple specialists, and it captures clinician time spent on face-to-face team decision-making.

Key payers relevant to national analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers of this publication will find an overview of the clinical context for using CPT code 99366, typical sites of service where the code applies, and the types of encounters it represents. The report also covers common billing considerations and benchmarking information where available, along with policy updates that affect documentation expectations and payer coverage nationally.

The content is intended to clarify when CPT code 99366 is appropriate to report, how it fits into interdisciplinary care models, and what operational areas—such as scheduling multidisciplinary meetings and capturing clinician participation—are relevant for billing and compliance. Data not available in the input are noted and omitted from discussion.

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Billing Code Overview

CPT code 99366 describes a medical team conference with the patient present when the patient requires evaluation or management by more than one medical specialty or discipline. The service involves a coordinated discussion among multiple clinicians to develop or revise a comprehensive treatment plan while the patient is in attendance.

Service type: Interdisciplinary team conference for treatment planning
Typical site of service: Hospital, inpatient unit, outpatient clinic, or other settings where multidisciplinary teams meet with the patient present

Data not available in the input for payers, associated taxonomies, and ICD-10 diagnoses.

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CPT 99366: Interdisciplinary Team Conference with Patient Present

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Billing Code Overview

Service type: Interdisciplinary team conference for treatment planning
Typical site of service: Hospital, inpatient unit, outpatient clinic, or other settings where multidisciplinary teams meet with the patient present

Data not available in the input for payers, associated taxonomies, and ICD-10 diagnoses.

Clinical & Coding Specifications

Clinical Context

A 68-year-old patient with stage III colorectal cancer and symptomatic coronary artery disease is referred for a coordinated treatment plan discussion. The oncologist, cardiologist, and colorectal surgeon convene with the patient and family in an outpatient clinic conference room to review sequencing of chemotherapy, perioperative cardiac risk reduction, and timing of surgical resection. The meeting includes review of recent imaging, laboratory results, cardiac risk assessment, and discussion of potential modifications to chemotherapy due to cardiac comorbidity. The team documents attendees, duration, topics discussed, consensus recommendations, and the patient’s stated preferences. The clinical workflow includes scheduling the multidisciplinary meeting, gathering relevant records and test results, conducting the face-to-face conference with the patient present, documenting the care plan in the medical record, and communicating the plan to all treating clinicians and the patient’s primary care provider.

Coding Specifications

Modifier	Description	When to Use
`11`	Office or other outpatient visit	Use when reporting service provided in an outpatient clinic setting as the primary encounter.
`22`	Increased procedural services	Use when the complexity and time of the conference substantially exceed typical requirements.
`25`	Significant, separately identifiable E/M service	Use when a distinct E/M visit is provided on the same day as the team conference.
`59`	Distinct procedural service	Use to indicate separate and distinct services when other procedures are billed the same day.
`62`	Two surgeons	Use when two surgeons with different specialties actively participate and both need recognition.
`78`	Unplanned return to the operating room by the same physician following initial procedure	Rarely applicable but use if the conference directly precedes an immediate unplanned return to OR.
`80`	Assistant surgeon	Use if an assistant surgeon's participation in the care plan meeting is billed separately where applicable.
`95`	Synchronous telemedicine service rendered via real-time interactive audio and video	Use when the multidisciplinary conference is conducted via live telemedicine with the patient present.
`96`	Habilitative/rehabilitative service delivery via telehealth	Use if the consultation is part of habilitative/rehabilitative care delivered through telehealth modalities.
`52`	Reduced services	Use when the conference provided is partially reduced or abbreviated compared with the full service.

Taxonomy Code	Specialty	Notes
208000000X	Internal Medicine	Common for medical oncology or cardiology representation in multidisciplinary conferences.
207P00000X	Surgery	Represents general or colorectal surgeons leading operative planning discussions.
207L00000X	Cardiovascular Disease	Cardiology specialists contributing perioperative cardiac risk assessment.
207K00000X	Hematology/Oncology	Medical oncology input for chemotherapy sequencing and systemic therapy considerations.
261Q00000X	Palliative Medicine	Palliative care may participate in goals-of-care and symptom management planning.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C18.7`	Malignant neoplasm of sigmoid colon	Colorectal malignancy commonly prompts multidisciplinary planning for chemotherapy and surgery.
`I25.10`	Atherosclerotic heart disease of native coronary artery without angina pectoris	Cardiac comorbidity affecting perioperative risk and systemic therapy choices.
`C78.7`	Secondary malignant neoplasm of liver and intrahepatic bile duct	Metastatic disease influencing sequencing of systemic therapy and surgical resection decisions.
`K92.2`	Gastrointestinal hemorrhage, unspecified	Complications such as bleeding may affect timing of interventions discussed at the conference.
`Z51.11`	Encounter for antineoplastic chemotherapy	Indicates active systemic therapy planning discussed during the multidisciplinary meeting.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Often used for separate, significant E/M visits with the patient on the same day as the multidisciplinary conference; may require modifier `25`.
`99354`	Prolonged physician service in the outpatient setting, direct patient contact beyond the usual service; first hour	Used when clinicians provide extended face-to-face care related to the treatment planning beyond standard visit time.
`99499`	Unlisted evaluation and management service	Used for atypical multidisciplinary services not otherwise described, rarely applicable if no specific code fits.
`G0454`	Hospital outpatient clinic visit for assessment and management of a patient by a physician, typically 30 minutes	May be used for longer face-to-face outpatient clinic visits in hospital-based clinics associated with multidisciplinary planning.
`99078`	Physician educational services rendered in a group setting, (eg, for staff, patients), per session	Occasionally used when the meeting includes structured patient education components for multiple attendees; usage is limited and payor-dependent.

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.

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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
`11`	Office or other outpatient visit	Use when reporting service provided in an outpatient clinic setting as the primary encounter.
`22`	Increased procedural services	Use when the complexity and time of the conference substantially exceed typical requirements.
`25`	Significant, separately identifiable E/M service	Use when a distinct E/M visit is provided on the same day as the team conference.
`59`	Distinct procedural service	Use to indicate separate and distinct services when other procedures are billed the same day.
`62`	Two surgeons	Use when two surgeons with different specialties actively participate and both need recognition.
`78`	Unplanned return to the operating room by the same physician following initial procedure	Rarely applicable but use if the conference directly precedes an immediate unplanned return to OR.
`80`	Assistant surgeon	Use if an assistant surgeon's participation in the care plan meeting is billed separately where applicable.
`95`	Synchronous telemedicine service rendered via real-time interactive audio and video	Use when the multidisciplinary conference is conducted via live telemedicine with the patient present.
`96`	Habilitative/rehabilitative service delivery via telehealth	Use if the consultation is part of habilitative/rehabilitative care delivered through telehealth modalities.
`52`	Reduced services	Use when the conference provided is partially reduced or abbreviated compared with the full service.

Taxonomy Code	Specialty	Notes
208000000X	Internal Medicine	Common for medical oncology or cardiology representation in multidisciplinary conferences.
207P00000X	Surgery	Represents general or colorectal surgeons leading operative planning discussions.
207L00000X	Cardiovascular Disease	Cardiology specialists contributing perioperative cardiac risk assessment.
207K00000X	Hematology/Oncology	Medical oncology input for chemotherapy sequencing and systemic therapy considerations.
261Q00000X	Palliative Medicine	Palliative care may participate in goals-of-care and symptom management planning.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C18.7`	Malignant neoplasm of sigmoid colon	Colorectal malignancy commonly prompts multidisciplinary planning for chemotherapy and surgery.
`I25.10`	Atherosclerotic heart disease of native coronary artery without angina pectoris	Cardiac comorbidity affecting perioperative risk and systemic therapy choices.
`C78.7`	Secondary malignant neoplasm of liver and intrahepatic bile duct	Metastatic disease influencing sequencing of systemic therapy and surgical resection decisions.
`K92.2`	Gastrointestinal hemorrhage, unspecified	Complications such as bleeding may affect timing of interventions discussed at the conference.
`Z51.11`	Encounter for antineoplastic chemotherapy	Indicates active systemic therapy planning discussed during the multidisciplinary meeting.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Often used for separate, significant E/M visits with the patient on the same day as the multidisciplinary conference; may require modifier `25`.
`99354`	Prolonged physician service in the outpatient setting, direct patient contact beyond the usual service; first hour	Used when clinicians provide extended face-to-face care related to the treatment planning beyond standard visit time.
`99499`	Unlisted evaluation and management service	Used for atypical multidisciplinary services not otherwise described, rarely applicable if no specific code fits.
`G0454`	Hospital outpatient clinic visit for assessment and management of a patient by a physician, typically 30 minutes	May be used for longer face-to-face outpatient clinic visits in hospital-based clinics associated with multidisciplinary planning.
`99078`	Physician educational services rendered in a group setting, (eg, for staff, patients), per session	Occasionally used when the meeting includes structured patient education components for multiple attendees; usage is limited and payor-dependent.

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 99366: Interdisciplinary Team Conference with Patient Present

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Billing Code Overview

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CPT 99366: Interdisciplinary Team Conference with Patient Present

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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