KX HCPCS Level II modifier: Requirements specified in the medical policy have been met

KX is a HCPCS Level II modifier: “Requirements specified in the medical policy have been met.” It adds this detail to the code it is reported with.

Official description

KX

Requirements specified in the medical policy have been met

Short description: Documentation on file

HCPCS · United States

Medicare details

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

Medicare coverage
Carrier judgment
Added
Jul 1, 2002

Where KX sits

  1. 1GroupHCPCS modifiers
  2. 2Modifier KXRequirements specified in the medical policy have been met

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 KX mean?

KX is the HCPCS code for “Requirements specified in the medical policy have been met” in CMS’s HCPCS Level II October 2026 release.

Where is KX in the HCPCS Level II list?

KX is listed under Modifiers.

Does Medicare cover KX?

CMS lists KX’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.