CPT code 11900: Lesion injection, up to seven lesions2026 Medicare rate & RVUs in Tennessee

In Tennessee, Medicare pays $52.54 for 11900 in the office and $22.79 when it’s performed in a hospital or facility.

Check a contract rate as a % of Medicare · 11900 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 11900 covers

A clinician injects medication directly into skin lesions, commonly using an intralesional corticosteroid for keloids, hypertrophic scars, or selected inflammatory lesions. Dermatologists and other clinicians who treat these conditions perform the service in office settings and, less often, in facility settings. The code is selected by the number of lesions treated, not the number of needle passes or the medication volume; it covers treatment of one through seven lesions. More than seven lesions are reported with 11901.

Document the treated lesions and their number, the medication and dose, and the clinical reason for injection. The medication may be reported separately when applicable and supported by documentation. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and others at 50%. Modifier 50 is inappropriate. Assistant-at-surgery payment is restricted, and co-surgeon and team-surgery reporting are not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

How Tennessee compares for 11900

Across 109 of 109 payment localities, the office rate for 11900 runs from $50.60 in Arkansas to $74.71 in San Benito County, CA. Tennessee pays $52.54. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

11900 rates by state

Office rate range in each state. Select a state to see its payment localities.

See 11900 in every payment locality

How the 11900 rate is calculated

Each of 11900’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 11900

The CMS indicators that decide how 11900 is paid alongside other services.

What modifiers do to the payment

When to use modifier 51

Codes related to 11900

Related codes aren’t interchangeable: bill the code that matches the service performed.

How 11900 has changed in Tennessee

Price 11900 for an earlier date of service

Where the Tennessee rate applies

Tennessee is a Medicare payment area, not a city. Our Census mapping connects it to 504 cities and communities in Tennessee. Some span more than one payment area; confirm with the service ZIP.

• Adams
• Adamsville
• Alamo
• Alcoa
• Alexandria
• Algood
• Allardt
• Altamont

Browse all communities in Tennessee

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates