CPT Code 36465: Injection of Non-Compounded Foam Sclerotherapy

Learn about CPT code 36465, covering sclerotherapy for a single incompetent truncal vein using noncompounded foam under ultrasound guidance.

Use Code

What is CPT code 36465?

CPT code 36465 describes the sclerotherapy procedure involving the injection of a noncompounded foam sclerosing solution into a single incompetent truncal vein of an extremity. This treatment is typically administered by qualified healthcare providers, such as vascular surgeons, phlebologists, or interventional radiologists, using ultrasound imaging guidance to ensure precise foam dispersion and accurate vein targeting. The procedure primarily treats conditions such as symptomatic varicose veins, chronic venous insufficiency, and small varicose veins resulting from reflux or valvular incompetence in the great saphenous vein, accessory saphenous vein, or other truncal veins. Correct usage of code 36465 requires detailed documentation of medical necessity and adherence to specific billing guidelines.

CPT 36465 specifically applies to treating a single incompetent vein, rather than multiple veins, within the same extremity during a single session. If multiple extremity veins require varicose vein treatment, an alternative code such as 36466 should be used.

What is sclerotherapy?

Sclerotherapy involves the injection of a chemical agent known as a sclerosant or sclerosing solution directly into affected veins. The sclerosant irritates the vein’s inner lining, causing endothelial damage, inflammation, and subsequent vein closure (sclerosis). This redirects blood flow to healthier veins, alleviating symptoms such as pain, swelling, or cosmetic issues associated with varicose and spider veins. Common sclerosants include polidocanol, sodium tetradecyl sulfate, and hypertonic saline.

Compounded vs. non-compounded foam sclerosing solution

Non-compounded foam refers to pre-formulated foam solutions, such as Varithena, specifically manufactured for direct clinical use.

Compounded foam is manually prepared by the provider, typically involving mixing liquid sclerosant agents with air or gas at the point of care. Code 36465 applies exclusively to non-compounded foam injections.

CPT code 36465 documentation requirements

Detailed clinical documentation is essential when billing CPT code 36465. Providers must ensure the medical record clearly supports:

Medical necessity

Explicit documentation of symptoms and findings from a physical examination supporting treatment, such as pain, edema, ulceration, or significant cosmetic concerns resulting from chronic venous insufficiency.

Type and volume of sclerosant used

Document the specific noncompounded foam sclerosant agent used and confirm that the volume injected does not exceed 1 cc per session.

Ultrasound imaging guidance

Clearly indicate the use of ultrasound imaging, including ultrasound compression maneuvers, to visualize and guide sclerosant administration and verify accurate dispersion in the targeted vein.

Number of injections and treated veins

Specify clearly that only a single incompetent truncal vein was treated per extremity during the session.

Pre- and post-procedural assessment

Include findings from the assessment before and after the procedure, noting patient status, symptom resolution, or any immediate complications.

CPT code 36465 billing guidelines

Correct billing for CPT 36465 requires adherence to specific payer guidelines and accurate code reporting to ensure appropriate reimbursement.

Report once per extremity per session

Bill CPT 36465 once for treatment of a single truncal vein per extremity during a given session. For bilateral procedures, apply appropriate modifiers.

Only for non-compounded foam agents ≤1 cc

Confirm the use of non-compounded foam sclerosant, with volume not exceeding 1 cc. If volume exceeds this, use code 36466 instead.

Use 36466 for volumes greater than 1 cc

If treatment requires more than 1 cc of foam sclerosant in the same extremity or involves multiple truncal veins, bill code 36466.

Do not use for compounded foam or liquid sclerosants

For treatments involving compounded foam solutions or liquid sclerosants, report alternative codes such as 36470–36471.

Verify Medicare administrative contractors (MAC) requirements

Review local MAC coverage policies, including any applicable local coverage determination (LCD), for specific documentation, coverage criteria, and limitations related to CPT code 36465.

Applicable modifiers for CPT code 36465

Modifiers ensure accurate claim processing and reimbursement. Common modifiers applicable to CPT code 36465 include:

Modifier 50 (bilateral procedure): Indicates treatment of veins in both legs during the same session.
Modifier RT (right side) or LT (left side): Specifies the extremity treated.
Modifier 51 (multiple procedures): When performed alongside other procedures during the same encounter.
Modifier 59 (distinct procedural service): If the procedure is distinct and separate from others performed simultaneously.
Modifier 76 (repeat procedure by same physician): If repeated on the same day by the same provider.
Modifier 77 (repeat procedure by another physician): If repeated by a different provider on the same date.

Always verify modifier usage with specific payer guidelines, as some payers may require or disallow certain modifiers.

Other relevant CPT codes

Providers may find the following CPT codes related to or useful in conjunction with CPT code 36465:

36466 – Injection of non-compounded foam sclerosant (>1 cc), same extremity.
36471 – Sclerotherapy using multiple injections of liquid sclerosant.
36470 – Single injection of liquid sclerosant (non-foam).
76942 – Ultrasound guidance for needle placement (when not bundled).

Frequently asked questions

No. CPT 36465 specifically applies to non-compounded foam sclerosants. Use CPT codes 36470 or 36471 for liquid sclerosants.

No. Choose only one code per extremity per session based on sclerosant volume.

No. CPT 36465 is specifically for a single incompetent truncal vein per extremity per session. Use CPT 36466 if treating multiple incompetent truncal veins.