F1 HCPCS Level II modifier: Left hand, second digit
F1 is a HCPCS Level II modifier: “Left hand, second digit.” It adds this detail to the code it is reported with.
Official description
F1Left hand, second digit
HCPCS · United States
Medicare details
The indicators CMS publishes with F1 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Added
- Jan 1, 1995
Where F1 sits
- 1GroupHCPCS modifiers
- 2Modifier F1Left hand, second 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 F1 mean?
F1 is the HCPCS code for “Left hand, second digit” in CMS’s HCPCS Level II October 2026 release.
Where is F1 in the HCPCS Level II list?
F1 is listed under Modifiers.
Does Medicare cover F1?
CMS lists F1’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 F1
All modifiersEMEmergency reserve supply (for esrd benefit only)EPService provided as part of medicaid early periodic screening diagnosis and treatment (epsdt) programERItems and services furnished by a provider-based, off-campus emergency departmentETEmergency servicesEXExpatriate beneficiaryEYNo physician or other licensed health care provider order for this item or serviceF2Left hand, third digitF3Left hand, fourth digitF4Left hand, fifth digitF5Right hand, thumbF6Right hand, second digitF7Right hand, third digit