G0340 HCPCS code: Image-guided robotic linear accelerator-based stereotactic radiosurgery, delivery including collimator changes and custom plugging, fractionated treatment, all lesions, per session, second through fifth sessions, maximum five sessions per course of treatment

G0340 is the HCPCS Level II code for image-guided robotic linear accelerator-based stereotactic radiosurgery, delivery including collimator changes and custom plugging, fractionated treatment, all lesions, per session, second through fifth sessions, maximum five sessions per course of treatment. In 2024 Medicare paid an average of $1,721.49 per service for G0340 across 13,297 services. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. The NCCI unit limit is 1 per day on outpatient hospital claims. Medicare volume rose 39% from 2022 to 2024 (9,547 to 13,297 services). In 2024, about 254 clinicians billed Medicare for G0340 for 3,234 beneficiaries; California, Arizona, Ohio accounted for 44% of services.

Code details

Who bills G0340 (2024)

Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.

Medicare utilization for G0340, 2022–2024

States with the most G0340 services (2024)

NCCI unit limits (MUE)

Medicare policy articles for this code

• A56874: Billing and Coding: Stereotactic Radiation Therapy: Stereotactic Radiosurgery (SRS) and Stereotactic Body Radiation Therapy (SBRT) (Wellpoint Federal (MAC - Part A, MAC - Part B))
• A59350: Billing and Coding: Radiation Therapies (Palmetto GBA (MAC - Part A, MAC - Part B))
• A59350: Billing and Coding: Radiation Therapies (Palmetto GBA (MAC - Part A, MAC - Part B))

Covered diagnoses (805 ICD-10-CM codes)

The diagnoses most often listed as covered in the policy articles above:

Showing 10 of 805. The full list, non-covered diagnoses and CSV export are in Caduvo.

What changed for G0340

• 2004-01-01: G0340 added to HCPCS Level II
• Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01

Frequently asked questions

What is HCPCS code G0340?

G0340 is the HCPCS Level II code for image-guided robotic linear accelerator-based stereotactic radiosurgery, delivery including collimator changes and custom plugging, fractionated treatment, all lesions, per session, second through fifth sessions, maximum five sessions per course of treatment. Short descriptor: "Robt lin-radsurg fractx 2-5".

How much does Medicare pay for G0340?

In 2024, the average Medicare payment was $1,721.49 per service (average allowed $2,156.24).

Does Medicare cover G0340?

Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.

Which diagnoses support coverage for G0340?

Medicare policy articles that cite G0340 list 805 covered ICD-10-CM diagnosis codes across 3 articles. The most cited include C00.0 (Malignant neoplasm of external upper lip), C00.1 (Malignant neoplasm of external lower lip), C00.2 (Malignant neoplasm of external lip, unspecified). A listed diagnosis is necessary but not sufficient; the policy's other criteria still apply.

How many units of G0340 can be billed per day?

1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).

Related G03 codes

• G0300 — Direct skilled nursing services of a licensed practical nurse (lpn) in the home health or hospice setting, each 15 minutes
• G0302 — Pre-operative pulmonary surgery services for preparation for lvrs, complete course of services, to include a minimum of 16 days of services
• G0303 — Pre-operative pulmonary surgery services for preparation for lvrs, 10 to 15 days of services
• G0304 — Pre-operative pulmonary surgery services for preparation for lvrs, 1 to 9 days of services
• G0305 — Post-discharge pulmonary surgery services after lvrs, minimum of 6 days of services
• G0306 — Complete cbc, automated (hgb, hct, rbc, wbc, without platelet count) and automated wbc differential count
• G0307 — Complete (cbc), automated (hgb, hct, rbc, wbc; without platelet count)
• G0308 — Creation of subcutaneous pocket with insertion of 180 day implantable interstitial glucose sensor, including system activation and patient training
• G0309 — Removal of implantable interstitial glucose sensor with creation of subcutaneous pocket at different anatomic site and insertion of new 180 day implantable sensor, including system activation
• G0310 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service, 5 to 15 mins time (this code is used for medicaid billing purposes)
• G0311 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service, 16-30 mins time (this code is used for medicaid billing purposes)
• G0312 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service for ages under 21, 5 to 15 mins time (this code is used for medicaid billing purposes)

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Next steps

• Run a reimbursement report for a device billed under G0340
• Watch G0340 for fee, coverage and descriptor changes
• Build a full Medicare revenue model for G0340

Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.

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