HCPCS Level II modifier
Modifier CD
Modifier CD is a HCPCS Level II modifier. CMS describes it as: AMCC test has been ordered by an ESRD facility or MCP physician that is part of the composite rate and is not separately billable.
Source: CMS HCPCS Level II, October 2026 file dated September 23, 2026. Publisher page
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- Modifier
- CD
- Type
- HCPCS Level II modifier, maintained by CMS
- CMS description
- AMCC test has been ordered by an ESRD facility or MCP physician that is part of the composite rate and is not separately billable
- Claim form
- CMS-1500 item 24D, up to four modifiers per line. 837P SV101-3 to SV101-6.
- Guidance
- CMS HCPCS quarterly update
Related modifiers
- CEAMCC 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 reimbursable based on medical necessity
- CCProcedure code change (use 'CC' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
- CFAMCC test has been ordered by an ESRD facility or MCP physician that is not part of the composite rate and is separately billable
- CBService ordered by a renal dialysis facility (RDF) physician as part of the ESRD beneficiary's dialysis benefit, is not part of the composite rate, and is separately reimbursable
- CGPolicy criteria applied
- CAProcedure payable only in the inpatient setting when performed emergently on an outpatient who expires prior to admission
- CH0 percent impaired, limited or restricted
- BUThe beneficiary has been informed of the purchase and rental options and after 30 days has not informed the supplier of his/her decision
Related pages
Questions
What does modifier CD mean?
Modifier CD is a HCPCS Level II modifier. CMS describes it as: AMCC test has been ordered by an ESRD facility or MCP physician that is part of the composite rate and is not separately billable.
Is modifier CD a CPT or a HCPCS modifier?
CD 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 CD 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.