Subtalar Arthroereisis (Sinus Tarsi Implant)
CPT 0335T
Reported when a surgeon inserts a subtalar implant to correct a flexible flatfoot that has not improved with bracing or orthotics.
No national payment amount
Carrier-priced: no national payment amount.
Does Medicare pay separately for CPT 0335T in 2026?
Not at a published national rate. CPT 0335T carries status C (carrier-priced) in the Q3 2026 release. Your Medicare Administrative Contractor prices this code case by case, usually after reviewing documentation. Treat the blank amount as unpriced, not as $0.
Common questions
Why is there no payment amount for 0335T?
Its status indicator is C (carrier-priced). Your Medicare Administrative Contractor prices this code case by case, usually after reviewing documentation. The blank is deliberate: the amount is either unknown or paid under another provision, so reading it as $0 would be wrong.
Why would a Medicare claim for 0335T be denied or paid less?
Each item below comes from a CMS indicator on this page — not general billing advice.
- Its status indicator is C (carrier-priced) — Your Medicare Administrative Contractor prices this code case by case, usually after reviewing documentation. See status indicators
- 59 codes can never be billed with 0335T on the same date of service — NCCI denies those pairs even with a modifier. See billing together
- 221 codes pair with 0335T only when modifier 59 (or XE, XS, XP, XU) documents a distinct service — billed together without one, a line of the pair denies. See billing together
Payer-specific coverage and documentation rules live outside these files, so a claim that clears every check here can still be denied on other grounds.
When does this rate change?
CMS publishes a fee schedule release every quarter (January, April, July, October), and each is versioned here. See what changed each release, or get an email when a new release moves rates.
Sources: CMS Medicare Physician Fee Schedule Relative Value Files.
Saw this code on your bill?
What is a 0335T visit in patient-friendly terms?
In plain terms: Placement of a small implant into the sinus tarsi, the naturally occurring canal between the ankle bone and heel bone, to mechanically limit excessive inward rolling of the foot. The implant acts as a spacer or wedge rather than fusing or cutting any bone, and can be removed later if it is no longer needed. It is most often done alongside soft-tissue procedures rather than as a standalone operation. Think of a child or younger adult whose foot rolls inward enough to cause pain or abnormal wear on shoes, and who has not gotten enough relief from arch supports alone. A surgeon places a small implant into the natural gap between the ankle and heel bones to block the excess motion, often alongside a tendon-lengthening procedure done at the same time. You'll typically see CPT 0335T on a bill or explanation of benefits (EOB) when a clinician performs or bills for this service.
How this amount is computed
amount = (work RVU × work GPCI + PE RVU × PE GPCI + MP RVU × MP GPCI) × conversion factor. National amounts use GPCI = 1.000. To price an RVU figure of your own, use the RVU-to-dollars converter.
| Component | RVU |
|---|---|
| Work RVU | blank |
| Practice expense RVU (non-facility) | blank |
| Practice expense RVU (facility) | blank |
| Malpractice RVU | blank |
Every rate combines three parts: work (the clinician’s time, skill and effort), practice expense (office overhead — higher when the service is done in a doctor’s own office), and malpractice (the share of liability-insurance cost). A blank means CMS publishes no national number for that part. Read it as unknown, and never as zero.
Rate history by release
National non-facility amount for 0335T across quarterly releases.
| Release | Status | Non-facility | Facility |
|---|---|---|---|
| Q3 2026 Jun 30, 2026 – present | C | — | — |
| Q2 2026 Mar 10, 2026 – Jun 29, 2026 | C | — | — |
| Q1 2026 Dec 29, 2025 – Mar 9, 2026 | C | — | — |
| Q4 2025 Sep 11, 2025 – Dec 28, 2025 | C | — | — |
| Q3 2025 Jun 5, 2025 – Sep 10, 2025 | C | — | — |
| Q2 2025 Jun 5, 2025 – Jun 4, 2025 | C | — | — |
| Q1 2025 Dec 23, 2024 – Jun 4, 2025 | C | — | — |
Billing together (NCCI edits)
NCCI Q3 2026Based on CMS's National Correct Coding Initiative (NCCI) — hover a code to see how it's used.
Never billable with 0335T on the same date of service
Showing 3 of 59 — search above to check a specific code.
No match in this list.
Billable with 0335T only with modifier 59, XE, XS, XP, or XU
Showing 3 of 221+ — search above to check a specific code.
No match in this list.
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Source & method
This is computed from CMS's Medicare Physician Fee Schedule Q3 2026 release (schedule pfs, effective July 2026). National amounts apply a GPCI of 1.000 and leave sequestration off. The status indicator decides payability, never the RVU values, so a blank RVU stays blank. Releases are immutable: a rate retrieved for a past quarter always reflects that release. Commercial and cash-pay figures anywhere on this page are arithmetic on the Medicare amount, using commonly cited reimbursement ranges. They're illustrative, and no nationwide claims database stands behind them.
Description written from primary sources: CMS Medicare Physician Fee Schedule Relative Value Files. Not derived from AMA CPT descriptor text.
Conversion factor $33.4009 read from the same file, row 11, column 26.
Use the (i) buttons next to each amount above for the exact row, columns, and math.
Cite this rate
This link keeps pointing at the Q3 2026 figures, even after a newer release lands.
CPT 0335T Medicare Physician Fee Schedule rate (Q3 2026). Localis. https://localishealth.com/cpt/0335T/2026/C