HCPCS Level II modifier
Modifier RR
Modifier RR is a HCPCS Level II modifier. CMS describes it as: Rental (use the 'RR' modifier when DME is to be rented).
Source: CMS HCPCS Level II, October 2026 file dated September 23, 2026. Publisher page
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- Modifier
- RR
- Type
- HCPCS Level II modifier, maintained by CMS
- CMS description
- Rental (use the 'RR' modifier when DME is to be rented)
- Claim form
- CMS-1500 item 24D, up to four modifiers per line. 837P SV101-3 to SV101-6.
- Guidance
- CMS HCPCS quarterly update
Equipment purchase and rental
Related modifiers
- NUNew equipment
- UEUsed durable medical equipment
- KSGlucose monitor supply for diabetic beneficiary not treated with insulin
- RTRight side (used to identify procedures performed on the right side of the body)
- RIRamus intermedius coronary artery
- SANurse practitioner rendering service in collaboration with a physician
- REFurnished in full compliance with FDA-mandated risk evaluation and mitigation strategy (REMS)
- SBNurse midwife
Related pages
Questions
What does modifier RR mean?
Modifier RR is a HCPCS Level II modifier. CMS describes it as: Rental (use the 'RR' modifier when DME is to be rented).
Is modifier RR a CPT or a HCPCS modifier?
RR is a HCPCS Level II modifier from the CMS quarterly HCPCS file. Two-digit numeric modifiers, such as 25 or 59, are CPT modifiers.
Where does modifier RR go on a claim?
On the CMS-1500 it goes in item 24D next to the procedure code. Each line holds up to four modifiers. On an 837P it goes in SV101-3 to SV101-6.
What denial comes back when a modifier is wrong?
A missing or mismatched modifier often comes back as CARC 4. A modifier that was not valid on the date of service comes back as CARC 182. A bundling edit the modifier should have bypassed comes back as CARC 97 or 236.