CPT 37766
Global 010 ActivePhleb veins - extrem 20+
CPT 37766 Billing & Documentation Guide
CPT code 37766 (Phleb veins - extrem 20+) is classified under Surgery (Respiratory/Cardiovascular) with a global period indicator of 010. The 2026 Medicare Physician Fee Schedule assigns a work RVU of 5.85, a non-facility practice expense RVU of 7.53, and a malpractice RVU of 1.37, a total non-facility RVU of 14.75 and facility RVU of 9.03. With the current conversion factor of $33.4009, the national average non-facility reimbursement is approximately $501.04, though rates vary from $435.01 to $604.09 based on MAC locality and Geographic Practice Cost Indices (GPCIs).
When billing 37766, ensure documentation supports medical necessity and the specific components required for the code's level of service. For E/M codes, document MDM (medical decision-making) elements: problems addressed, data reviewed, and risk. For procedural codes, document the indication, technique, and any complications. Always verify NCCI edits before bundling 37766 with related codes; this code has 10 PTP bundling relationships on file (see table below).
Payment Status & Global Period
Active code (paid under MPFS)
10-day global period (minor procedure: pre-op day + procedure + 10 days post-op)
MUE Limit (Medically Unlikely Edits)
Submitting more than 1 units of 37766 for the same patient on the same date triggers automatic line denial unless an appropriate modifier and supporting documentation justify the higher quantity.
RVU Breakdown, CPT 37766
| Component | Non-Facility | Facility |
|---|---|---|
| Work RVU | 5.85 | 5.85 |
| Practice Expense RVU | 7.53 | 1.81 |
| Malpractice RVU | 1.37 | 1.37 |
| Total RVU | 14.75 | 9.03 |
| Conversion Factor | $33.4009 | |
2026 Medicare Reimbursement by State, CPT 37766
State-level averages across all MAC localities. Non-facility rates typically apply to office-based services; facility rates apply to hospital outpatient / inpatient.
| State | Non-Facility | Facility | Range (Non-Fac) | Localities |
|---|---|---|---|---|
| California | $524.82 | $298.75 | $498.9 - $604.09 | 29 |
| Florida | $536.82 | $345.13 | $504.61 - $572.94 | 3 |
| Georgia | $490.38 | $308.12 | $474.29 - $506.47 | 2 |
| Illinois | $526.55 | $341.94 | $496.54 - $554.55 | 4 |
| Michigan | $495.97 | $316.57 | $476.68 - $515.25 | 2 |
| North Carolina | $459.29 | $281.04 | $459.29 - $459.29 | 1 |
| New York | $547.46 | $334.32 | $466.5 - $591.92 | 5 |
| Ohio | $471.15 | $296.72 | $471.15 - $471.15 | 1 |
| Pennsylvania | $492.42 | $305.29 | $469.52 - $515.32 | 2 |
| Texas | $486.59 | $298.49 | $466.78 - $509.67 | 8 |
Source: CMS PFSRVU 2026 · Updated 2026-04-01. Full locality-level detail available for all 53 states, contact us for custom reports.
NCCI Bundling Edits, CPT 37766
Procedure-to-procedure (PTP) edits. If you bill any of these codes with 37766 on the same date of service, review the modifier indicator and payer policy before submission.
| Partner Code | Relationship | Modifier Allowed | Rationale |
|---|---|---|---|
| 0213T | Column 1 (primary), can be billed with modifier | No | Misuse of Column Two code with Column One code |
| 0216T | Column 1 (primary), can be billed with modifier | No | Misuse of Column Two code with Column One code |
| 0228T | Column 1 (primary), can be billed with modifier | No | Standards of medical/surgical practice |
| 0230T | Column 1 (primary), can be billed with modifier | No | Standards of medical/surgical practice |
| 0596T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0597T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0708T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0709T | Column 1 (primary), can be billed with modifier | Yes | Standards of medical/surgical practice |
| 0903T | Column 1 (primary), can be billed with modifier | Yes | Misuse of Column Two code with Column One code |
| 0904T | Column 1 (primary), can be billed with modifier | Yes | Misuse of Column Two code with Column One code |
Frequently Asked Questions, CPT 37766
What does CPT code 37766 mean? +
CPT code 37766 represents: Phleb veins - extrem 20+. It's in the Surgery (Respiratory/Cardiovascular) category with a global period of 010.
What is the Medicare reimbursement for CPT 37766? +
The 2026 Medicare national average non-facility payment for CPT 37766 is $501.04. Rates range from $435.01 to $604.09 across 53 states depending on MAC locality and GPCIs.
What modifiers can I use with CPT 37766? +
Surgery codes commonly use modifier 22 (increased procedural services), 50 (bilateral), 51 (multiple procedures), 52 (reduced services), 58/78/79 (staged, unplanned return, unrelated within global), 62 (co-surgeons), 80/82 (assistant surgeon), and 59 or the X{EPSU} subset for distinct procedural service.
What bundling edits apply to CPT 37766? +
This code has 10 NCCI PTP bundling relationships. See the NCCI Bundling section below for full list.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team