UD HCPCS Level II modifier: Medicaid level of care 13, as defined by each state

UD is a HCPCS Level II modifier: “Medicaid level of care 13, as defined by each state.” It adds this detail to the code it is reported with.

Official description

UD

Medicaid level of care 13, as defined by each state

Short description: M/caid care lev 13 state def

HCPCS · United States

Medicare details

The indicators CMS publishes with UD in its October 2026 file. They describe Medicare’s handling, not another payer’s.

Medicare coverage: Not payable by Medicare
Added: Jul 1, 2002

Where UD sits

1GroupHCPCS modifiers
2Modifier UDMedicaid level of care 13, as defined by each state

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.

See UD in the CMS source

Frequently asked questions

What does HCPCS code UD mean?

UD is the HCPCS code for “Medicaid level of care 13, as defined by each state” in CMS’s HCPCS Level II October 2026 release.

Where is UD in the HCPCS Level II list?

UD is listed under Modifiers.

Does Medicare cover UD?

CMS lists UD’s Medicare coverage as “Not payable by Medicare”. 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.

All modifiers

U7Medicaid level of care 7, as defined by each state U8Medicaid level of care 8, as defined by each state U9Medicaid level of care 9, as defined by each state UAMedicaid level of care 10, as defined by each state UBMedicaid level of care 11, as defined by each state UCMedicaid level of care 12, as defined by each state UEUsed durable medical equipment UFServices provided in the morning UGServices provided in the afternoon UHServices provided in the evening UJServices provided at night UKServices provided on behalf of the client to someone other than the client (collateral relationship)