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HCPCS K1002: Cranial Electrotherapy Stimulation System

HCPCS Level II code K1002 identifies a cranial electrotherapy stimulation (CES) system — a durable medical device that delivers low-level electrical stimulation to the cranium for therapeutic indications. The code matters nationally as payers and suppliers navigate coverage, reimbursement, and appropriate use of neuromodulation devices that may be used in behavioral health and pain management pathways. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will find a concise overview of what K1002 represents, how the device is typically supplied and used (outpatient settings and home use as a durable medical device), and an explanation of common operational considerations for billing and claims processing. The publication summarizes benchmark metrics where available, highlights relevant policy and coverage themes affecting CES device reimbursement, and outlines the clinical context in which CES systems are applied. Data not available in the input is noted where applicable. The intent is to inform billing managers, clinical program leads, and policy analysts about the code’s purpose, payer landscape, and the topics to consider when managing services tied to K1002.

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Billing Code Overview

HCPCS Level II code K1002 represents a cranial electrotherapy stimulation (CES) system, any type. This billing code covers the device used to deliver low-level electrical stimulation to the cranium for therapeutic purposes.

Service type: Durable medical device therapy involving a cranial electrotherapy stimulation system
Typical site of service: Outpatient clinics, outpatient specialty centers, behavioral health clinics, and patient home use when supplied as a durable medical device

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HCPCS K1002: Cranial Electrotherapy Stimulation System

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Billing Code Overview

Service type: Durable medical device therapy involving a cranial electrotherapy stimulation system
Typical site of service: Outpatient clinics, outpatient specialty centers, behavioral health clinics, and patient home use when supplied as a durable medical device

Clinical & Coding Specifications

Clinical Context

A typical patient is a 35–65-year-old adult presenting to an outpatient behavioral health clinic with persistent symptoms of generalized anxiety disorder, major depressive disorder with mild-to-moderate severity, or chronic insomnia who has had inadequate response or intolerance to first-line pharmacologic and psychotherapeutic treatments. The clinician (psychiatrist, neurologist, or pain medicine specialist) documents treatment history, obtains informed consent, and performs a brief baseline assessment including symptom severity scales (for example, PHQ-9, GAD-7, or Insomnia Severity Index). The cranial electrotherapy stimulation (CES) device is either applied in clinic as a single supervised session for acute symptom management or provided as a take-home device with training for daily home use. Typical workflow steps include: device selection and verification (K1002 describes a CES system), education on device operation and safety, documentation of baseline symptoms and contraindications (for example, implanted electronic devices, unstable seizure disorder), programming and electrode placement, supervised treatment session (usually 20–60 minutes) or device dispensing with documented training, and follow-up visits to assess efficacy and adverse effects. Billing uses HCPCS Level II code K1002 for the CES system; additional evaluation and management or psychotherapy CPT codes may be billed separately when medically appropriate and supported by documentation.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When work required to provide CES (for example, extensive device customization, complicated patient education, or significant additional time) is substantially greater than typical and documentation supports increased work.
`23`	Unusual anesthesia	When unusual anesthesia is provided for CES (rare) and documentation supports anesthesia beyond local measures.
`52`	Reduced services	When the CES service is partially reduced or not provided as originally planned (for example, abbreviated session due to intolerance).
`53`	Discontinued procedure	When CES is started but terminated for patient safety or adverse reaction before completion.
`54`	Surgical care only	Not commonly used for CES; would indicate only surgical portion billed by one practitioner when relevant (generally not applicable).
`55`	Postoperative management only	Not typically applicable to CES; use only if another practitioner bills only post-procedural care.
`56`	Preoperative management only	Rare for CES; use if only pre-procedure services are billed by a practitioner.
`62`	Two surgeons	Use if two qualified providers with distinct, documented roles participated in a technically complex CES procedure (rare).
`AS`	Accredited facility service	When the service is performed in an ambulatory surgical center setting and the modifier is required by the payor.
`CQ`	Service furnished as part of a clinical trial, noncovered services	When CES is furnished under a clinical trial for which the device service is noncovered by the payer; use per payer rules.
`FX`	Physician training service provided	Use when a teaching physician documents that a resident performed the procedure under supervision and facility or payer requires this modifier for training-related services.
`FY`	Patient or family training service provided	When substantial patient or family training for home CES device operation is provided and documented.
`NU`	New equipment	When billing distinguishes new equipment versus replacement (use per payer policy if applicable to CES device supply).
`QX`	Qualified nonphysician practitioner service	When a qualified nonphysician practitioner (for example, a nurse practitioner) furnishes the CES service under applicable supervision rules.

Taxonomy Code	Specialty	Notes
`2084P0800X`	Psychiatry	Psychiatrists commonly evaluate and manage indications for CES such as anxiety and depression and supervise treatment.
`2084N0400X`	Neurology	Neurologists may evaluate patients with headache, chronic pain, or neurologic conditions and integrate CES into management.
`207L00000X`	Physical Medicine & Rehabilitation	Physiatrists may use CES for chronic pain, insomnia adjunctive therapy, and functional rehabilitation.
`363L00000X`	Pain Medicine	Pain specialists incorporate CES as part of multimodal pain management for chronic musculoskeletal pain or headache.
`163WK0400X`	Clinical Neurophysiology	Specialists in neurostimulation device management and testing may be involved in device selection and monitoring.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`F41.1`	Generalized anxiety disorder	CES is used as adjunctive therapy for anxiety symptoms when first-line treatments are insufficient.
`F33.1`	Major depressive disorder, recurrent, moderate	CES may be offered as noninvasive neuromodulation adjunct for depressive symptoms in select patients.
`G47.00`	Insomnia, unspecified	CES is used off-label by some clinicians to address chronic insomnia symptoms as adjunctive therapy.
`G44.1`	Vascular headache, not elsewhere classified (migraine)	CES can be used as part of a multimodal approach for chronic headache disorders in some practices.
`M54.5`	Low back pain	CES is sometimes applied as adjunctive symptomatic treatment for chronic musculoskeletal pain.
`R51`	Headache	CES may be used in the management of chronic or recurrent headaches when other therapies are inadequate.
`F45.40`	Somatoform disorder, unspecified	CES is occasionally used in patients with somatic symptom presentations where standard therapies have limited effect.

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	Commonly billed for follow-up visits assessing response to CES, medication adjustments, or device-related issues.
`99203`	Office or other outpatient visit for a new patient, typically 30 minutes	Used for the initial evaluation and decision to initiate CES when the patient is new to the clinician.
`99354`	Prolonged service in the outpatient setting, face-to-face; first hour (list separately in addition to code for E/M)	May be used when extensive training or device education for CES requires prolonged face-to-face time beyond typical E/M visit.
`99070`	Supplies and materials provided by the physician over and above those usually included with the office visit	Used to report noncovered or additional supplies related to CES device setup or electrode disposables when payor permits.
`99406`	Smoking and tobacco use cessation counseling visit, intermediate, greater than 3 minutes up to 10 minutes	Example of a behavioral counseling CPT that may be billed in the same visit if smoking cessation counseling is provided alongside CES therapy (billing per payer rules).

HCPCS C1300: Hyperbaric Oxygen in Full-Body Chamber, per 30 Minutes

HCPCS-K0901-KNEE-ORTHOSIS-SINGLE-UPRIGHT-PREFABRICATED

HCPCS K0901: Knee Orthosis, Single Upright, Prefabricated

HCPCS-K0902-KNEE-ORTHOSIS-DOUBLE-UPRIGHT-PREFABRICATED-OTS

HCPCS Level II K0902: Knee Orthosis, Double Upright, Prefabricated

HCPCS-K0903-DIABETIC-CUSTOM-MULTIPLE-DENSITY-INSERT

HCPCS K0903: Custom Multiple-Density Diabetic Foot Insert

HCPCS-K1001-ELECTRONIC-POSITIONAL-OSA-TREATMENT-SENSOR

HCPCS K1001: Electronic Positional Obstructive Sleep Apnea Treatment, with Sensor

HCPCS-K1003-WHIRLPOOL-TUB-WALK-IN-PORTABLE

HCPCS K1003: Whirlpool Tub, Walk-In, Portable

HCPCS-LEVEL-II-M1144-LIMITED-CONSULTATIVE-THERAPY-1-2-VISITS

HCPCS Level II M1144: Limited/Consultative Therapy, 1-2 Visits

HCPCS-M0064-PSYCHIATRIC-MEDICATION-MANAGEMENT-BRIEF-OFFICE-VISIT

HCPCS M0064: Brief Psychiatric Medication Management Visit

HCPCS-M1000-PAIN-SCREEN-MODERATE-SEVERE

HCPCS M1000: Pain Screened as Moderate to Severe

HCPCS-M1001-PAIN-MANAGEMENT-PLAN-OF-CARE-MODERATE-SEVERE-PAIN

HCPCS Level II M1001: Plan of Care for Moderate to Severe Pain

Showing 1–10 of 16

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 work required to provide CES (for example, extensive device customization, complicated patient education, or significant additional time) is substantially greater than typical and documentation supports increased work.
`23`	Unusual anesthesia	When unusual anesthesia is provided for CES (rare) and documentation supports anesthesia beyond local measures.
`52`	Reduced services	When the CES service is partially reduced or not provided as originally planned (for example, abbreviated session due to intolerance).
`53`	Discontinued procedure	When CES is started but terminated for patient safety or adverse reaction before completion.
`54`	Surgical care only	Not commonly used for CES; would indicate only surgical portion billed by one practitioner when relevant (generally not applicable).
`55`	Postoperative management only	Not typically applicable to CES; use only if another practitioner bills only post-procedural care.
`56`	Preoperative management only	Rare for CES; use if only pre-procedure services are billed by a practitioner.
`62`	Two surgeons	Use if two qualified providers with distinct, documented roles participated in a technically complex CES procedure (rare).
`AS`	Accredited facility service	When the service is performed in an ambulatory surgical center setting and the modifier is required by the payor.
`CQ`	Service furnished as part of a clinical trial, noncovered services	When CES is furnished under a clinical trial for which the device service is noncovered by the payer; use per payer rules.
`FX`	Physician training service provided	Use when a teaching physician documents that a resident performed the procedure under supervision and facility or payer requires this modifier for training-related services.
`FY`	Patient or family training service provided	When substantial patient or family training for home CES device operation is provided and documented.
`NU`	New equipment	When billing distinguishes new equipment versus replacement (use per payer policy if applicable to CES device supply).
`QX`	Qualified nonphysician practitioner service	When a qualified nonphysician practitioner (for example, a nurse practitioner) furnishes the CES service under applicable supervision rules.

Taxonomy Code	Specialty	Notes
`2084P0800X`	Psychiatry	Psychiatrists commonly evaluate and manage indications for CES such as anxiety and depression and supervise treatment.
`2084N0400X`	Neurology	Neurologists may evaluate patients with headache, chronic pain, or neurologic conditions and integrate CES into management.
`207L00000X`	Physical Medicine & Rehabilitation	Physiatrists may use CES for chronic pain, insomnia adjunctive therapy, and functional rehabilitation.
`363L00000X`	Pain Medicine	Pain specialists incorporate CES as part of multimodal pain management for chronic musculoskeletal pain or headache.
`163WK0400X`	Clinical Neurophysiology	Specialists in neurostimulation device management and testing may be involved in device selection and monitoring.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`F41.1`	Generalized anxiety disorder	CES is used as adjunctive therapy for anxiety symptoms when first-line treatments are insufficient.
`F33.1`	Major depressive disorder, recurrent, moderate	CES may be offered as noninvasive neuromodulation adjunct for depressive symptoms in select patients.
`G47.00`	Insomnia, unspecified	CES is used off-label by some clinicians to address chronic insomnia symptoms as adjunctive therapy.
`G44.1`	Vascular headache, not elsewhere classified (migraine)	CES can be used as part of a multimodal approach for chronic headache disorders in some practices.
`M54.5`	Low back pain	CES is sometimes applied as adjunctive symptomatic treatment for chronic musculoskeletal pain.
`R51`	Headache	CES may be used in the management of chronic or recurrent headaches when other therapies are inadequate.
`F45.40`	Somatoform disorder, unspecified	CES is occasionally used in patients with somatic symptom presentations where standard therapies have limited effect.

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	Commonly billed for follow-up visits assessing response to CES, medication adjustments, or device-related issues.
`99203`	Office or other outpatient visit for a new patient, typically 30 minutes	Used for the initial evaluation and decision to initiate CES when the patient is new to the clinician.
`99354`	Prolonged service in the outpatient setting, face-to-face; first hour (list separately in addition to code for E/M)	May be used when extensive training or device education for CES requires prolonged face-to-face time beyond typical E/M visit.
`99070`	Supplies and materials provided by the physician over and above those usually included with the office visit	Used to report noncovered or additional supplies related to CES device setup or electrode disposables when payor permits.
`99406`	Smoking and tobacco use cessation counseling visit, intermediate, greater than 3 minutes up to 10 minutes	Example of a behavioral counseling CPT that may be billed in the same visit if smoking cessation counseling is provided alongside CES therapy (billing per payer rules).

HCPCS C1300: Hyperbaric Oxygen in Full-Body Chamber, per 30 Minutes

HCPCS-K0901-KNEE-ORTHOSIS-SINGLE-UPRIGHT-PREFABRICATED

HCPCS K0901: Knee Orthosis, Single Upright, Prefabricated

HCPCS-K0902-KNEE-ORTHOSIS-DOUBLE-UPRIGHT-PREFABRICATED-OTS

HCPCS Level II K0902: Knee Orthosis, Double Upright, Prefabricated

HCPCS-K0903-DIABETIC-CUSTOM-MULTIPLE-DENSITY-INSERT

HCPCS K0903: Custom Multiple-Density Diabetic Foot Insert

HCPCS-K1001-ELECTRONIC-POSITIONAL-OSA-TREATMENT-SENSOR

HCPCS K1001: Electronic Positional Obstructive Sleep Apnea Treatment, with Sensor

HCPCS-K1003-WHIRLPOOL-TUB-WALK-IN-PORTABLE

HCPCS K1003: Whirlpool Tub, Walk-In, Portable

HCPCS-LEVEL-II-M1144-LIMITED-CONSULTATIVE-THERAPY-1-2-VISITS

HCPCS Level II M1144: Limited/Consultative Therapy, 1-2 Visits

HCPCS-M0064-PSYCHIATRIC-MEDICATION-MANAGEMENT-BRIEF-OFFICE-VISIT

HCPCS M0064: Brief Psychiatric Medication Management Visit

HCPCS-M1000-PAIN-SCREEN-MODERATE-SEVERE

HCPCS M1000: Pain Screened as Moderate to Severe

HCPCS-M1001-PAIN-MANAGEMENT-PLAN-OF-CARE-MODERATE-SEVERE-PAIN

HCPCS Level II M1001: Plan of Care for Moderate to Severe Pain

Showing 1–10 of 16

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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HCPCS K1002: Cranial Electrotherapy Stimulation System

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Billing Code Overview

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HCPCS K1002: Cranial Electrotherapy Stimulation System

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Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

HCPCS K1002: Cranial Electrotherapy Stimulation System

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Billing Code Overview

HCPCS K1002: Cranial Electrotherapy Stimulation System

Sign up for hcpcs K1002 policy alerts

Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What does HCPCS code K1002 represent?

What clinical documentation and workflow steps are expected when furnishing a CES system under K1002?

Which modifiers are relevant when billing K1002 and when should they be used?

What other CPT codes might be billed alongside K1002?

Which payers are included in the analysis and how should I verify coverage for K1002?

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What does HCPCS code K1002 represent?

What clinical documentation and workflow steps are expected when furnishing a CES system under K1002?

Which modifiers are relevant when billing K1002 and when should they be used?

What other CPT codes might be billed alongside K1002?

Which payers are included in the analysis and how should I verify coverage for K1002?

References