CPT code 27840: Ankle dislocation, closed, without anesthesia2026 Medicare rate & RVUs in California

CMS doesn’t publish an office rate for 27840 in California.

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

What 27840 covers

This code describes closed treatment of an ankle joint dislocation without anesthesia. The clinician restores alignment without surgically exposing the joint; the service may be provided by an emergency physician or an orthopedic surgeon in an emergency department, hospital, or office setting. The record should establish the dislocation, the closed method used, and that anesthesia was not used.

Choose this code rather than the anesthesia-requiring closed-treatment code when the documented circumstances meet that distinction; open treatment belongs to a different code. Medicare assigns a 90-day global period, which includes the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. For bilateral treatment, modifier 50 is paid at 150%. Medicare does not pay an assistant at surgery for this service; co-surgeons and team surgery 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.

Where 27840 pays more and less in California

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

29 of 29 payment localities

How the 27840 rate is calculated

Each of 27840’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 27840

27840 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 50

27840 compared with similar codes

How to choose

27842Ankle dislocationClosed reduction with anesthesia

Both are for closed treatment of an ankle dislocation. The key distinction is whether anesthesia is required: without anesthesia points to 27840; requiring anesthesia points to 27842.

27846Ankle dislocationOpen treatment

27846 describes open treatment of an ankle dislocation. Use 27840 when the treatment is closed and performed without anesthesia.

27808Ankle fracture careBimalleolar, without manipulation

27808 is for closed treatment of an ankle fracture without manipulation, not an isolated ankle dislocation. Code the documented injury and treatment rather than treating these as interchangeable.

27810Ankle fracture treatmentBimalleolar, with manipulation

27810 concerns closed treatment of an ankle fracture with manipulation. It is not the code for closed treatment of an ankle dislocation.

Codes related to 27840

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

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