CI HCPCS Level II modifier: At least 1 percent but less than 20 percent impaired, limited or restricted
CI is a HCPCS Level II modifier: “At least 1 percent but less than 20 percent impaired, limited or restricted.” It adds this detail to the code it is reported with.
Official description
CIAt least 1 percent but less than 20 percent impaired, limited or restricted
Short description: 1 to <20 percent impaired
HCPCS · United States
Notes for CI
As CMS prints them, with any note CI takes from the headings above it.
Note
- CMS processing note 0180: 2013 PFS; PUB 100-04, 5-10, 12.027I.
Medicare details
The indicators CMS publishes with CI in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Special coverage instructions apply
- Added
- Jan 1, 2013
Where CI sits
- 1GroupHCPCS modifiers
- 2Modifier CIAt least 1 percent but less than 20 percent impaired, limited or restricted
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 CI mean?
CI is the HCPCS code for “At least 1 percent but less than 20 percent impaired, limited or restricted” in CMS’s HCPCS Level II October 2026 release.
Where is CI in the HCPCS Level II list?
CI is listed under Modifiers.
Does Medicare cover CI?
CMS lists CI’s Medicare coverage as “Special coverage instructions apply”. 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 CI
All modifiersCCProcedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)CDAmcc test has been ordered by an esrd facility or mcp physician that is part of the composite rate and is not separately billableCEAmcc test has been ordered by an esrd facility or mcp physician that is a composite rate test but is beyond the normal frequency covered under the rate and is separately…CFAmcc test has been ordered by an esrd facility or mcp physician that is not part of the composite rate and is separately billableCGPolicy criteria appliedCH0 percent impaired, limited or restrictedCJAt least 20 percent but less than 40 percent impaired, limited or restrictedCKAt least 40 percent but less than 60 percent impaired, limited or restrictedCLAt least 60 percent but less than 80 percent impaired, limited or restrictedCMAt least 80 percent but less than 100 percent impaired, limited or restrictedCN100 percent impaired, limited or restrictedCOOutpatient occupational therapy services furnished in whole or in part by an occupational therapy assistant