T3 HCPCS Level II modifier: Left foot, fourth digit
T3 is a HCPCS Level II modifier: “Left foot, fourth digit.” It adds this detail to the code it is reported with.
Official description
T3Left foot, fourth digit
HCPCS · United States
Medicare details
The indicators CMS publishes with T3 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Added
- Jan 1, 1995
Where T3 sits
- 1GroupHCPCS modifiers
- 2Modifier T3Left foot, fourth digit
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code T3 mean?
T3 is the HCPCS code for “Left foot, fourth digit” in CMS’s HCPCS Level II October 2026 release.
Where is T3 in the HCPCS Level II list?
T3 is listed under Modifiers.
Does Medicare cover T3?
CMS lists T3’s Medicare coverage as “Carrier judgment”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside T3
All modifiersSVPharmaceuticals delivered to patient's home but not utilizedSWServices provided by a certified diabetic educatorSYPersons who are in close contact with member of high-risk population (use only with codes for immunization)SZHabilitative servicesT1Left foot, second digitT2Left foot, third digitT4Left foot, fifth digitT5Right foot, great toeT6Right foot, second digitT7Right foot, third digitT8Right foot, fourth digitT9Right foot, fifth digit