US · guidance
CMS Pub. 100-04, ch. 18, § 60.8
Remittance Advice Codes
All messages refer to ANSI X12N 835 coding.
A. If the claim for a screening FOBT, a screening flexible sigmoidoscopy, or a screening
barium enema is being denied because the patient is less than 45 years of age, use:
Claim Adjustment Reason Code (CARC) 6 “The procedure/revenue code is inconsistent with
the patient’s age,” at the line level; and, Remittance Advice Remark Code (RARC) N129
“Not eligible due to patient’s age”
B. If the claim for a screening FOBT, a screening colonoscopy, a screening flexible
sigmoidoscopy, or a screening barium enema is being denied because the time period between
the test/procedure has not passed, use:
• CARC 119 “Benefit maximum for this time period or occurrence has been reached” at the
line level.
C. If the claim is being denied for a screening colonoscopy (HCPCS G0105) or a screening
barium enema (HCPCS G0120) because the patient is not at a high risk, use:
• CARC 46 “This (these) service(s) is (are) not covered” at the line level; and,
• RARC M83 “Service is not covered unless the patient is classified as a high risk.” at the line
level.
D. If the service is being denied because payment has already been made for a similar
procedure within the set time frame, use:
• CARC 18, “Duplicate claim/service” at the line level; and,
• RARC M86 “Service is denied because payment already made for similar procedure within a
set timeframe.” at the line level.
E. If the claim is being denied for a non-covered screening procedure such as HCPCS G0122,
use:
CARC 49, “These are non-covered services because this is a routine exam or screening
procedure done in conjunction with a routine exam.”
F. If the claim is being denied because the code is invalid, use the following at the line level:
• CARC B18 “Payment denied because this procedure code/modifier was invalid on the date
of service or claim submission.”
G. If denying claims for Cologuard™ multi-target sDNA screening test (HCPCS G0464 -
Effective January 1, 2016, HCPCS G0464 has been discontinued and replaced with CPT 81528)
or Blood-based Biomarker test (HCPCS G0327) when furnished more than once in a 3-year
period [at least 2 years and 11 full months (35 months total) must elapse from the date of the last
screening], use:
• CARC 119: “Benefit maximum for this time period or occurrence has been reached.”
• RARC N386: “This decision was based on a National Coverage Determination (NCD). An
NCD provides a coverage determination as to whether a particular item or service is covered.
A copy of this policy is available at www.cms.gov/mcd/search.asp. If you do not have web
access, you may contact the contractor to request a copy of the NCD.”
Group Code CO assigning financial liability to the provider, if a claim is received with a GZ
modifier indicating no signed ABN is on file.
H. If denying claims for Cologuard™ multi-target sDNA screening test (HCPCS G0464 -
Effective January 1, 2016, HCPCS G0464 has been discontinued and replaced with CPT 81528)
or Blood-based Biomarker test (HCPCS G0327) when beneficiary is not between the ages 45-85,
use:
• CARC 6: “The procedure/revenue code is inconsistent with the patient's age. Note: Refer to
the 835 Healthcare Policy Identification Segment (loop 2110 Service Payment Information
REF), if present.”
• RARC N129: “Not eligible due to the patient’s age.”
Group Code CO assigning financial liability to the provider, if a claim is received with a GZ
modifier indicating no signed ABN is on file.
I. If denying claims for Cologuard™ multi-target sDNA screening test (HCPCS G0464 -
Effective January 1, 2016, HCPCS G0464 has been discontinued and replaced with CPT 81528)
or Blood-based Biomarker test (HCPCS G0327) when the claim does not contain ICD-10
diagnosis codes Z12.12 OR Z12.11), use:
• CARC 167 – This (these) diagnosis(es) is (are) not covered. Note: Refer to the 835
Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if
present.
• RARC N386 – “This decision was based on a National Coverage Determination (NCD). An
NCD provides a coverage determination as to whether a particular item or service is covered.
A copy of this policy is available at www.cms.gov/mcd/search.asp. If you do not have web
access, you may contact the contractor to request a copy of the NCD.”
Group Code CO assigning financial liability to the provider, if a claim is received with a GZ
modifier indicating no signed ABN is on file.
J. If denying claims for Cologuard™ multi-target sDNA screening test (HCPCS G0464 - Effective January 1,
2016, HCPCS G0464 has been discontinued and replaced with CPT 81528) or Blood-based Biomarker test
(HCPCS G0327) when claims are submitted on a TOB other than 13X, 14X, or 85X, use:
• CARC 170: “Payment is denied when performed/billed by this type of provider. Note: Refer to the 835
Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if present.”
• RARC N95 – “This provider type/provider specialty may not bill this service.”
Group Code CO assigning financial liability to the provider, if a claim is received with a GZ modifier indicating no
signed ABN is on file.
History
(Rev. 12299; Issued:10-12-23; Effective:01-01-23; Implementation:11-13-23)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
7d0f5a769db44843215711e9dc9d413e534f5c800021b900269f0839ad60b914
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