CPT 1009T: Remote Subscalp Continuous Bilateral EEG Monitoring, 30 Days

CPT code 1009T describes a remote monitoring service in which the provider acquires EEG data from an implanted subscalp continuous bilateral EEG system, identifies spikes and seizure activity, interprets the recordings, and prepares a report covering up to 30 days of data; service type: remote continuous EEG monitoring with interpretation and reporting; typical site of service: outpatient or ambulatory remote monitoring of an implanted subscalp device.

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CPT 1009T: Remote Subscalp Continuous Bilateral EEG Monitoring, 30 Days

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Clinical & Coding Specifications

Clinical Context

A 28-year-old patient with drug-resistant focal epilepsy undergoes implantation of a subscalp continuous bilateral EEG monitoring device to capture infrequent seizures and interictal epileptiform activity. The implant is placed in the outpatient surgical suite by a neurosurgeon with perioperative support from an epileptologist. After implantation and an initial postoperative check, the device records continuous EEG data for up to 30 days while the patient goes about normal activities. A remote monitoring clinician (epileptologist or neurophysiologist) accesses the transmitted EEG data, uses automated spike and seizure detection algorithms to flag suspicious events, reviews and verifies detected events, interprets the findings in the context of clinical history and seizure diaries, and prepares a formal interpretation report summarizing spikes, electrographic seizures, timing, lateralization, and recommended next steps for the treating team. The remote acquisition, identification, interpretation and reporting workflow corresponds to 1009T and typically occurs in an ambulatory or outpatient remote monitoring setting with secure telemetry and electronic health record documentation. Common payors include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare. Follow-up includes clinical review with the treating neurologist/neurosurgeon to correlate events with symptoms and adjust medical or surgical management as indicated by the team’s clinical decision-making.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`95970`	Electronic analysis of implanted neurostimulator pulse generator system with reprogramming, simple or complex; initial interrogation and programming	May be performed if the implanted device requires interrogation, programming, or adjustments during follow-up visits related to subscalp monitoring systems.
`95971`	Electronic analysis of implanted neurostimulator pulse generator system with reprogramming, simple or complex; subsequent interrogation and programming	Used for subsequent device interrogations or programming visits after initial setup.
`95812`	EEG; awake and drowsy (recording, scalp, routine)	Routine scalp EEG performed in-clinic that may be used before or after implant to compare findings and localize epileptiform activity.
`95816`	EEG; prolonged video-EEG monitoring with recording, unattended, up to 72 hours or more	In-hospital or outpatient prolonged video-EEG monitoring that can be an alternative or supplement to subscalp continuous monitoring for capturing events.
`92587`	Balance testing (electronystagmography), unless otherwise specified	Data not directly related but occasionally billed by neurophysiology labs during comprehensive vestibular or neurophysiologic evaluations; include only when clinically indicated.

Related Modifiers

5 rows

Modifier	Description	When to Use
26	Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…	- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
59	Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…	- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
25	CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…	- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
52	Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…	- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
53	Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…	- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…

Related Provider Taxonomies

8 rows

Taxonomy Code	Specialty	Notes
207RG0100X	Gastroenterology Physician	An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This…
2084N0400X	Neurology Physician	A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, auton…
208U00000X	Clinical Pharmacology Physician	Clinical pharmacology encompasses the spectrum of activities related to the discovery, development, regulation, and utilization of safe and effective …
363A00000X	Physician Assistant	A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and…
261QF0400X	Federally Qualified Health Center (FQHC)	Ambulatory Health Care Facilities · Clinic/Center
341800000X	Military/U.S. Coast Guard Transport	Transportation Services · Military/U.S. Coast Guard Transport
3418M1120X	Military or U.S. Coast Guard Air Transport Ambulance	Vehicle and staff for patient emergency or non-emergency air transport.
2080S0010X	Pediatric Sports Medicine Physician	A pediatrician who is responsible for continuous care in the field of sports medicine, not only for the enhancement of health and fitness, but also fo…

Related ICD-10-CM Codes

23 rows

ICD-10-CM Code	Description
F07.0	Personality change due to known physiological condition
F44.4	Conversion disorder with motor symptom or deficit
F44.5	Conversion disorder with seizures or convulsions
G25.3	Myoclonus
G40.101	Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus
G40.209	Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, without status epilepticus
G40.311	Generalized idiopathic epilepsy and epileptic syndromes, intractable, with status epilepticus
G40.411	Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus
G40.901	Epilepsy, unspecified, not intractable, with status epilepticus
G40.909	Epilepsy, unspecified, not intractable, without status epilepticus

Showing 1–10 of 23

CPT 1004T: Implanted Subscalp Continuous Bilateral EEG Data Review

CPT-1005T-SUBSCALP-CONTINUOUS-BILATERAL-EEG-DEVICE-PROGRAMMING

CPT 1005T: Subscalp Continuous Bilateral EEG System Programming

CPT-1006T-SUBSCALP-IMPLANT-EEEG-DEVICE-PROGRAMMING

CPT 1006T: Implantable Subscalp Continuous EEG Settings Adjustment

CPT-1007T-SUBSCALP-CONTINUOUS-BILATERAL-EEG-30-DAY-INTERPRETATION

CPT 1007T: Implanted Subscalp Continuous Bilateral EEG Review

CPT-1008T-EXTERNAL-COMMUNICATOR-SETUP-SUBSCALP-CONTINUOUS-BILATERAL-EEG

CPT 1008T: External Device Setup and Patient Education for Subscalp EEG

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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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.

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Clinical & Coding Specifications

Clinical Context

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`95970`	Electronic analysis of implanted neurostimulator pulse generator system with reprogramming, simple or complex; initial interrogation and programming	May be performed if the implanted device requires interrogation, programming, or adjustments during follow-up visits related to subscalp monitoring systems.
`95971`	Electronic analysis of implanted neurostimulator pulse generator system with reprogramming, simple or complex; subsequent interrogation and programming	Used for subsequent device interrogations or programming visits after initial setup.
`95812`	EEG; awake and drowsy (recording, scalp, routine)	Routine scalp EEG performed in-clinic that may be used before or after implant to compare findings and localize epileptiform activity.
`95816`	EEG; prolonged video-EEG monitoring with recording, unattended, up to 72 hours or more	In-hospital or outpatient prolonged video-EEG monitoring that can be an alternative or supplement to subscalp continuous monitoring for capturing events.
`92587`	Balance testing (electronystagmography), unless otherwise specified	Data not directly related but occasionally billed by neurophysiology labs during comprehensive vestibular or neurophysiologic evaluations; include only when clinically indicated.

Related Modifiers

5 rows

Modifier	Description	When to Use
26	Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…	- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
59	Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…	- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
25	CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…	- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
52	Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…	- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
53	Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…	- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…

Related Provider Taxonomies

8 rows

Taxonomy Code	Specialty	Notes
207RG0100X	Gastroenterology Physician	An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This…
2084N0400X	Neurology Physician	A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, auton…
208U00000X	Clinical Pharmacology Physician	Clinical pharmacology encompasses the spectrum of activities related to the discovery, development, regulation, and utilization of safe and effective …
363A00000X	Physician Assistant	A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and…
261QF0400X	Federally Qualified Health Center (FQHC)	Ambulatory Health Care Facilities · Clinic/Center
341800000X	Military/U.S. Coast Guard Transport	Transportation Services · Military/U.S. Coast Guard Transport
3418M1120X	Military or U.S. Coast Guard Air Transport Ambulance	Vehicle and staff for patient emergency or non-emergency air transport.
2080S0010X	Pediatric Sports Medicine Physician	A pediatrician who is responsible for continuous care in the field of sports medicine, not only for the enhancement of health and fitness, but also fo…

Related ICD-10-CM Codes

23 rows

ICD-10-CM Code	Description
F07.0	Personality change due to known physiological condition
F44.4	Conversion disorder with motor symptom or deficit
F44.5	Conversion disorder with seizures or convulsions
G25.3	Myoclonus
G40.101	Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, not intractable, with status epilepticus
G40.209	Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, not intractable, without status epilepticus
G40.311	Generalized idiopathic epilepsy and epileptic syndromes, intractable, with status epilepticus
G40.411	Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus
G40.901	Epilepsy, unspecified, not intractable, with status epilepticus
G40.909	Epilepsy, unspecified, not intractable, without status epilepticus

Showing 1–10 of 23

CPT 1004T: Implanted Subscalp Continuous Bilateral EEG Data Review

CPT-1005T-SUBSCALP-CONTINUOUS-BILATERAL-EEG-DEVICE-PROGRAMMING

CPT 1005T: Subscalp Continuous Bilateral EEG System Programming

CPT-1006T-SUBSCALP-IMPLANT-EEEG-DEVICE-PROGRAMMING

CPT 1006T: Implantable Subscalp Continuous EEG Settings Adjustment

CPT-1007T-SUBSCALP-CONTINUOUS-BILATERAL-EEG-30-DAY-INTERPRETATION

CPT 1007T: Implanted Subscalp Continuous Bilateral EEG Review

CPT-1008T-EXTERNAL-COMMUNICATOR-SETUP-SUBSCALP-CONTINUOUS-BILATERAL-EEG

CPT 1008T: External Device Setup and Patient Education for Subscalp EEG

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

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

OpenPayer

CPT 1009T: Remote Subscalp Continuous Bilateral EEG Monitoring, 30 Days

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OpenPayer

CPT 1009T: Remote Subscalp Continuous Bilateral EEG Monitoring, 30 Days

Sign up for cpt 1009T policy alerts

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related ICD-10-CM Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related ICD-10-CM Codes

Related Codes

References

CPT 1009T: Remote Subscalp Continuous Bilateral EEG Monitoring, 30 Days

Sign up for cpt 1009T policy alerts

CPT 1009T: Remote Subscalp Continuous Bilateral EEG Monitoring, 30 Days

Sign up for cpt 1009T policy alerts

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related ICD-10-CM Codes

Related Codes

What clinical service does CPT 1009T describe?

Which payors are mentioned as covering or commonly involved with 1009T?

What modifiers are commonly used with 1009T and when are they applied?

What is the typical monitoring duration and workflow for services billed with 1009T?

What related CPT codes might appear alongside 1009T in care pathways?

References

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related ICD-10-CM Codes

Related Codes

What clinical service does CPT 1009T describe?

Which payors are mentioned as covering or commonly involved with 1009T?

What modifiers are commonly used with 1009T and when are they applied?

What is the typical monitoring duration and workflow for services billed with 1009T?

What related CPT codes might appear alongside 1009T in care pathways?

References