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CPT 1025T: Alternating Electric Fields Treatment Planning and Setup

CPT code 1025T represents a computer-assisted planning and setup service for alternating electric fields therapy directed at tumors. This code captures the provider work involved in calculating dose parameters, selecting the optimal skin array configuration for an individual patient, and verifying array placement to ensure effective therapy delivery. As device-based oncologic treatments expand, clear coding for planning and verification services is increasingly important for clinical workflow and billing consistency nationwide.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage patterns where available, coding benchmarks, clinical context for alternating electric fields therapy, and policy considerations that affect reimbursement and documentation requirements.

Readers will learn what CPT code 1025T covers clinically, where the service is typically performed, and what to expect in payer interactions and documentation needs. The report provides benchmarks and policy updates when available, clarifies the scope of the planning and setup service, and summarizes implications for oncology departments and outpatient device centers. Data not available in the input is noted where applicable.

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Billing Code Overview

CPT code 1025T describes a provider-performed computer modeling and setup process for alternating electric fields therapy targeting a tumor. The service includes calculating the therapeutic dose, selecting the optimal arrangement of skin arrays for the individual patient, and verifying correct placement of arrays to ensure effective delivery of the treatment.

Service type: Device-based treatment planning and setup using computer modeling for tumor-directed alternating electric fields.
Typical site of service: Hospital outpatient departments or specialized oncology clinics where device-based tumor therapies are delivered.

Data not available in the input for modifiers, associated taxonomies, ICD-10 diagnoses, related codes, and service line.

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CPT 1025T: Alternating Electric Fields Treatment Planning and Setup

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Billing Code Overview

Service type: Device-based treatment planning and setup using computer modeling for tumor-directed alternating electric fields.
Typical site of service: Hospital outpatient departments or specialized oncology clinics where device-based tumor therapies are delivered.

Data not available in the input for modifiers, associated taxonomies, ICD-10 diagnoses, related codes, and service line.

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult with a newly diagnosed or recurrent supratentorial or infratentorial malignant tumor (commonly glioblastoma multiforme) who is being considered for alternating electric fields therapy. The patient has completed initial surgery and/or radiation and systemic chemotherapy or is receiving temozolomide concurrently. The clinical workflow begins with a multidisciplinary neuro-oncology visit during which treatment with a portable tumor treatment system is considered. The provider obtains scalp and tumor imaging (MRI) and records head measurements. A treatment planning session is scheduled where the provider uses computer modeling to map tumor location, calculate the delivered field dose, and determine optimal skin array configuration. The provider selects array positions based on the modeling, documents the planned layout, and instructs trained staff or the patient/caregiver on array placement, device setup, and troubleshooting. Follow-up visits assess device tolerance, skin integrity at array sites, and treatment adherence; imaging and clinical status are monitored periodically to evaluate response and inform ongoing array repositioning or re-planning as needed.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional Component	When reporting only the physician’s professional work separate from facility technical components, if applicable under payer policy.
`59`	Distinct Procedural Service	When this planning service is separate and distinct from other procedures performed the same day that are not typically bundled.
`24`	Unrelated E/M Service by Same Physician During Postoperative Period	When a separate evaluation unrelated to the postoperative care is provided during the global period.
`25`	Significant, Separately Identifiable E/M Service by Same Physician on Same Day	When a distinct evaluation and management visit is performed at the same encounter as this planning service.
`51`	Multiple Procedures	When multiple procedures are reported on the same date and payer requires this modifier for secondary codes.
`76`	Repeat Procedure by Same Physician	When the planning is repeated on the same day by the same physician.
`77`	Repeat Procedure by Another Physician	When the planning is repeated on the same day by a different physician.
`JW`	Drug Amount Discarded/Not Administered (Not typically applicable)	Only used if a related medication is wasted and reporting is required by payer policy.
`GA`	Waiver of Liability Statement on File	When patient consents to an item/service that may be non-covered and a signed waiver is on file.
`GZ`	Item or Service Statutorily Non-Covered, No Waiver on File	When payer policy indicates non-coverage and no waiver exists.

Taxonomy Code	Specialty	Notes
`207RH0000X`	Radiation Oncology	Common specialty overseeing electric field therapy planning and integration with radiotherapy.
`208000000X`	Neurological Surgery	Neurosurgeons involved in post-surgical planning and coordination for device-based tumor therapies.
`2084P0800X`	Radiation Therapist	Clinicians/therapists who assist with device setup, array placement, and patient instruction.
`2086S0122X`	Clinical Neurophysiology	Specialists who may be involved in treatment planning and dosimetry for electric field therapies.
`363L00000X`	Oncology Nurse Practitioner	Advanced practice providers who perform patient education, device training, and follow-up management.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C71.9`	Malignant neoplasm of brain, unspecified	Common primary diagnosis for patients considered for alternating electric fields therapy for malignant brain tumors.
`C71.6`	Malignant neoplasm of temporal lobe, brain	Specific intracranial tumor locations targeted by field arrays; location affects array configuration.
`C71.1`	Malignant neoplasm of frontal lobe, brain	Frontal lobe tumors commonly treated and require customized array positioning during planning.
`C71.7`	Malignant neoplasm of parietal lobe, brain	Parietal tumors influence modeling and optimal skin array arrangement.
`C79.31`	Secondary malignant neoplasm of brain	Metastatic lesions to the brain that may be evaluated for device therapy in select cases.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99204`	Office or other outpatient visit for the evaluation and management of a new patient, typically 45 minutes	Used when an extended new-patient E/M is performed for treatment planning and counseling prior to device modeling.
`99214`	Office or other outpatient visit for the evaluation and management of an established patient, typically 25 minutes	Used for follow-up visits to assess tolerance, skin integrity, and adherence related to array placement and therapy.
`96573`	Irrigation of implanted venous reservoir or catheter, central venous access device (not directly related)	Data not available in the input.
`95831`	Electroencephalogram (EEG) monitoring, 16–30 channels; awake and drowsy	May be performed in select centers to document baseline neurophysiology before initiating device-based therapies.
`77334`	Treatment device (e.g., radiation therapy device) parameters, computational dosimetry performed during radiation therapy planning, complex calculation	Analogous to the computer modeling and dosimetry calculations performed for alternating electric fields planning.

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
`26`	Professional Component	When reporting only the physician’s professional work separate from facility technical components, if applicable under payer policy.
`59`	Distinct Procedural Service	When this planning service is separate and distinct from other procedures performed the same day that are not typically bundled.
`24`	Unrelated E/M Service by Same Physician During Postoperative Period	When a separate evaluation unrelated to the postoperative care is provided during the global period.
`25`	Significant, Separately Identifiable E/M Service by Same Physician on Same Day	When a distinct evaluation and management visit is performed at the same encounter as this planning service.
`51`	Multiple Procedures	When multiple procedures are reported on the same date and payer requires this modifier for secondary codes.
`76`	Repeat Procedure by Same Physician	When the planning is repeated on the same day by the same physician.
`77`	Repeat Procedure by Another Physician	When the planning is repeated on the same day by a different physician.
`JW`	Drug Amount Discarded/Not Administered (Not typically applicable)	Only used if a related medication is wasted and reporting is required by payer policy.
`GA`	Waiver of Liability Statement on File	When patient consents to an item/service that may be non-covered and a signed waiver is on file.
`GZ`	Item or Service Statutorily Non-Covered, No Waiver on File	When payer policy indicates non-coverage and no waiver exists.

Taxonomy Code	Specialty	Notes
`207RH0000X`	Radiation Oncology	Common specialty overseeing electric field therapy planning and integration with radiotherapy.
`208000000X`	Neurological Surgery	Neurosurgeons involved in post-surgical planning and coordination for device-based tumor therapies.
`2084P0800X`	Radiation Therapist	Clinicians/therapists who assist with device setup, array placement, and patient instruction.
`2086S0122X`	Clinical Neurophysiology	Specialists who may be involved in treatment planning and dosimetry for electric field therapies.
`363L00000X`	Oncology Nurse Practitioner	Advanced practice providers who perform patient education, device training, and follow-up management.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C71.9`	Malignant neoplasm of brain, unspecified	Common primary diagnosis for patients considered for alternating electric fields therapy for malignant brain tumors.
`C71.6`	Malignant neoplasm of temporal lobe, brain	Specific intracranial tumor locations targeted by field arrays; location affects array configuration.
`C71.1`	Malignant neoplasm of frontal lobe, brain	Frontal lobe tumors commonly treated and require customized array positioning during planning.
`C71.7`	Malignant neoplasm of parietal lobe, brain	Parietal tumors influence modeling and optimal skin array arrangement.
`C79.31`	Secondary malignant neoplasm of brain	Metastatic lesions to the brain that may be evaluated for device therapy in select cases.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99204`	Office or other outpatient visit for the evaluation and management of a new patient, typically 45 minutes	Used when an extended new-patient E/M is performed for treatment planning and counseling prior to device modeling.
`99214`	Office or other outpatient visit for the evaluation and management of an established patient, typically 25 minutes	Used for follow-up visits to assess tolerance, skin integrity, and adherence related to array placement and therapy.
`96573`	Irrigation of implanted venous reservoir or catheter, central venous access device (not directly related)	Data not available in the input.
`95831`	Electroencephalogram (EEG) monitoring, 16–30 channels; awake and drowsy	May be performed in select centers to document baseline neurophysiology before initiating device-based therapies.
`77334`	Treatment device (e.g., radiation therapy device) parameters, computational dosimetry performed during radiation therapy planning, complex calculation	Analogous to the computer modeling and dosimetry calculations performed for alternating electric fields planning.

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 1025T: Alternating Electric Fields Treatment Planning and Setup

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Billing Code Overview

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CPT 1025T: Alternating Electric Fields Treatment Planning and Setup

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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