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I/OCE edit list: what each outpatient code editor edit does to the claim

When a hospital outpatient claim is returned, rejected line by line or denied, the reason starts as an edit number from the Integrated Outpatient Code Editor (I/OCE), the CMS software Medicare contractors run on institutional outpatient claims. Release v27.3, effective October 1, 2026, lists 145 edit numbers. 111 are in effect for current dates of service and 34 are retired edits the table still lists; 87 of the active edits are listed for a standard hospital outpatient claim (bill type 013x). This page lists every edit with its disposition, the action the disposition requires and, for the common ones, the claim adjustment reason and remark codes that describe the same problem.

Compiled from CMS files by the QuickIntell RCM Editorial Team · Data effective · Method: reference methodology · Report a data correction

Data currency: I/OCE data tables (edits, status and payment indicators): I/OCE v27.3 (October 2026) (effective October 1, 2026); NCCI PTP edits: v323r0 (2026 Q4) (effective October 1, 2026); NCCI add-on code edits: 2026 Q4 (effective October 1, 2026). Next CMS release: January 1, 2027 (quarterly I/OCE release) for the I/OCE data tables (edits, status and payment indicators); January 1, 2027 (quarterly update) for the NCCI PTP edits and NCCI add-on code edits.

Edit numbers in v27.3
145
34 retired
In effect
111
87 apply to bill type 013x
Return to provider (in effect)
63
claim comes back unprocessed
Line item rejection (in effect)
28
correct and resubmit the line
Line item denial (in effect)
12
appeal the line
Suspension (in effect)
7
held for contractor review

The six dispositions

Each edit has one disposition, and the disposition, not the edit, decides what the hospital can do next: fix and resubmit, appeal, or wait. A claim can carry edits with several dispositions at once.

I/OCE edit dispositions with the number of edits that carry each, v27.3
DispositionCodeWhat it means for the claimEdits in effect
Claim RejectionCRThe whole claim is rejected. Correct and resubmit it; a rejection cannot be appealed.1 of 1
Claim DenialCDThe whole claim is denied. It cannot be resubmitted, but the denial can be appealed.0 of 1
Return to ProviderRTPThe claim comes back before adjudication (no remittance advice). Fix the flagged item and resubmit.63 of 84
SuspensionSUSThe claim is held, not returned, until the MAC reviews it or obtains more information.7 of 13
Line Item RejectionLIRThe claim is paid without the rejected line. The line can be corrected and resubmitted but not appealed.28 of 31
Line Item DenialLIDThe claim is paid without the denied line. The line cannot be resubmitted but can be appealed.12 of 15

Return to provider is the most common disposition, used for problems the hospital can fix on its own: an invalid diagnosis, procedure, revenue code, modifier or date, or a code reported on a bill type that cannot carry it. Because a returned claim never reaches adjudication, there is no 835 and no reason code; the fix happens in the contractor's claim correction screens or through a corrected submission. Line item rejections and denials do reach the remittance, as line-level adjustments, and they need different responses: a rejected line is corrected and resubmitted, a denied line is appealed with documentation.

Common edits and the matching denial codes

The I/OCE returns edit numbers to the contractor; it does not choose the codes on the remittance advice. The contractor's claims system translates line rejections and denials into claim adjustment reason codes (CARC) and remittance advice remark codes (RARC). The table matches the most frequent edits to the codes whose X12 definitions describe the same problem, so a denial team can move from the code on the 835 to the edit and back. Use the codes on your own remittance when they differ.

Common I/OCE edits matched to CARC and RARC codes by definition
EditEdit nameDispositionMatching codesWhy
9Non-covered under any Medicare outpatient benefit for reasons other than statutory exclusionLID (line item denial)CARC 96The line is non-covered; CARC 96 is the non-covered charge reason.
17Inappropriate specification of bilateral procedureLIR (line item rejection)CARC 4A bilateral procedure reported in a way the modifier rules do not allow; CARC 4 covers a missing or inconsistent modifier.
18Inpatient procedureLID (line item denial)CARC 5An inpatient-only (status C) procedure on an outpatient bill: the procedure does not fit the type of bill.
20Code2 of a code pair that is not allowed by NCCI even if appropriate modifier is presentLIR (line item rejection)CARC 236, CARC 97, RARC M15NCCI pair with modifier indicator 0: CARC 236 names NCCI; CARC 97 with M15 is the bundled-service form.
40Code2 of a code pair that would be allowed by NCCI if appropriate modifier were presentLIR (line item rejection)CARC 236, CARC 97, RARC M15NCCI pair with modifier indicator 1 and no qualifying modifier on the line.
47Service is not separately payableLIR (line item rejection)CARC 234, CARC 97Only packaged services on the claim: nothing is paid separately.
49Service on same day as inpatient procedureLID (line item denial)CARC 97, RARC M80Services on the same day as an inpatient-only procedure are denied with it.
68Service provided prior to date of National Coverage Determination (NCD) or Demonstration approvalLID (line item denial)CARC 50, RARC N386Service dated before the National Coverage Determination that allows it.
83Service provided on or after effective date of NCDLID (line item denial)CARC 50, RARC N386Service dated on or after an NCD that ends or limits its coverage.
106Add-on code reported without required primary procedure codeLID (line item denial)CARC 107, RARC N122Type 1 add-on code without one of its listed primary codes on the claim. On a standard OPPS claim (013x) only remote mental health and software-as-a-service add-ons are edited.
107Add-on code reported without required contractor-defined primary procedure codeLID (line item denial)CARC 107, RARC N122Type 2 add-on code without a primary code the contractor accepts, on a critical access hospital professional line (085x, revenue code 096x-098x).
108Add-on code reported without required primary procedure or required contractor-defined primary procedure codeLID (line item denial)CARC 107, RARC N122Type 3 add-on code without a listed or contractor-accepted primary code, on the bill types the specification lists, not a standard OPPS 013x claim.

How the I/OCE carries the NCCI edits

The I/OCE applies the National Correct Coding Initiative to outpatient facility claims. The hospital procedure-to-procedure table becomes edits 20 and 40: the column-two code of a pair is rejected, with edit 20 when the pair allows no modifier and edit 40 when it allows one but the line does not carry it. Both are line item rejections, so the remedy is to correct the line, by removing the column-two code or by adding a modifier the record supports, and resubmit. With the hospital outpatient table selected, the NCCI pair checker shows which code of a pair is column two and whether a modifier can apply. The add-on code edits become edits 106, 107 and 108, one per edit type, as line item denials on the bill types the specification lists; edit 107 is returned only on critical access hospital (085x) professional lines. On a standard OPPS hospital outpatient claim (013x) only edit 106 applies, and only to remote mental health and software-as-a-service add-on codes. The add-on code reference explains the types. Unit limits are not I/OCE edits: the contractor applies the outpatient hospital MUE table separately, and the MUE lookup shows the value for any code.

All 145 edits by claim area

The I/OCE files each edit under the part of the claim it examines. Status shows whether the edit is in effect for current dates of service and whether the specification lists it for a standard hospital outpatient claim (bill type 013x without a program condition code) or only for specific bill types and programs, such as partial hospitalization and intensive outpatient claims, rural health clinics, federally qualified health centers or community mental health centers. On a 013x claim edit 106 applies only to remote mental health and software-as-a-service add-on codes, so its status reads "In effect, 013x for specific codes". A retired edit can still apply to a claim whose service dates fall before the edit ended, as long as those dates are inside the seven-year window of logic the software keeps.

Claim edits (5, 5 in effect)

Edits about the claim as a whole: bill type, receipt date and the program a partial hospitalization or intensive outpatient claim belongs to.

I/OCE v27.3 claim edits
EditEdit name (CMS)DispositionStatusDenial codes
24Date out of OCE rangeSUS (suspension)In effect, 013x—
118Invalid bill typeRTP (return to provider)In effect, specific bill types—
119Invalid claims processing receipt dateRTP (return to provider)In effect, 013x—
190IOP Primary service not reported for IOP claimRTP (return to provider)In effect, specific bill types—
191PHP Primary service not reported for PHP claimRTP (return to provider)In effect, specific bill types—

Diagnosis edits (6, 5 in effect)

Edits about the diagnosis codes: validity, age, and codes that cannot be the principal diagnosis.

I/OCE v27.3 diagnosis edits
EditEdit name (CMS)DispositionStatusDenial codes
1Invalid diagnosis codeRTP (return to provider)In effect, 013x—
2Diagnosis and age conflictRTP (return to provider)In effect, 013x—
3Diagnosis and sex conflictRTP (return to provider)Retired—
5External cause of morbidity code cannot be used as principal diagnosisRTP (return to provider)In effect, 013x—
86Manifestation code not allowed as principal diagnosisRTP (return to provider)In effect, 013x—
113Supplementary or additional code not allowed as principal diagnosisRTP (return to provider)In effect, 013x—

Procedure edits (122, 91 in effect)

Edits about the HCPCS and CPT lines: validity, coverage flags, code pairs, add-on codes, devices, observation, partial hospitalization and program rules.

I/OCE v27.3 procedure edits
EditEdit name (CMS)DispositionStatusDenial codes
4Medicare secondary payer alertSUS (suspension)Retired—
6Invalid procedure codeRTP (return to provider)In effect, 013x—
7Procedure and age conflictLIR (line item rejection)In effect, 013x—
8Procedure and sex conflictRTP (return to provider)Retired—
10Service submitted for denialCD (claim denial)Retired—
11Service submitted for MAC reviewSUS (suspension)In effect, 013x—
12Questionable covered serviceSUS (suspension)In effect, 013x—
13Separate payment for services is not provided by MedicareLIR (line item rejection)In effect, 013x—
14Code indicates a site of service not included in OPPSRTP (return to provider)Retired—
15Service unit out of range for procedure (inactive)RTP (return to provider)Retired—
16Multiple bilateral procedures without modifier 50RTP (return to provider)Retired—
17Inappropriate specification of bilateral procedureLIR (line item rejection)In effect, 013xCARC 4
18Inpatient procedureLID (line item denial)In effect, 013xCARC 5
19Mutually exclusive procedure that is not allowed by NCCI even if appropriate modifier is presentLIR (line item rejection)Retired—
20Code2 of a code pair that is not allowed by NCCI even if appropriate modifier is presentLIR (line item rejection)In effect, 013xCARC 236, CARC 97, RARC M15
21Medical visit on the same day as a type T or S procedure without modifier 25RTP (return to provider)In effect, 013x—
25Invalid ageRTP (return to provider)In effect, 013x—
26Invalid sexRTP (return to provider)In effect, 013x—
27Only incidental services reportedCR (claim rejection)In effect, 013x—
28Code not recognized by Medicare for outpatient claims; alternate code for same service may be availableLIR (line item rejection)In effect, 013x—
29PHP/IOP service for non-mental health diagnosisRTP (return to provider)In effect, specific bill types—
30Insufficient services on day of partial hospitalization (inactive)LID (line item denial)Retired—
31Partial hospitalization on same day as ECT or type T procedureSUS (suspension)Retired—
32Partial hospitalization claim spans 3 or less days with insufficient services on at least one of the daysSUS (suspension)Retired—
33Partial hospitalization claim spans more than 3 days with insufficient number of days having mental health servicesSUS (suspension)Retired—
34Partial hospitalization claim spans more than 3 days with insufficient number of days meeting partial hospitalization criteriaSUS (suspension)Retired—
35Only Mental Health education and training services providedRTP (return to provider)In effect, 013x—
36Extensive mental health services provided on day of type T procedureSUS (suspension)Retired—
37Terminated bilateral procedure or terminated procedure with units greater than oneRTP (return to provider)In effect, 013x—
38Inconsistency between implanted device or administered substance and implantation or associated procedureRTP (return to provider)In effect, 013x—
39Mutually exclusive procedure that would be allowed by NCCI if appropriate modifier were present (combined with edit 40 retroactive to earliest included version)LIR (line item rejection)Retired—
40Code2 of a code pair that would be allowed by NCCI if appropriate modifier were presentLIR (line item rejection)In effect, 013xCARC 236, CARC 97, RARC M15
42Multiple medical visits on same day with same revenue code without condition code G0RTP (return to provider)In effect, 013x—
43Transfusion or blood product exchange without specification of blood productRTP (return to provider)In effect, 013x—
44Observation revenue code on line item with non-observation HCPCS codeRTP (return to provider)In effect, 013x—
45Inpatient separate procedures not paidLIR (line item rejection)In effect, 013x—
46Partial hospitalization condition code 41 not approved for type of billRTP (return to provider)In effect, specific bill types—
47Service is not separately payableLIR (line item rejection)In effect, 013xCARC 234, CARC 97
49Service on same day as inpatient procedureLID (line item denial)In effect, 013xCARC 97, RARC M80
51Observation code G0378 not allowed to be reported more than once per claimRTP (return to provider)In effect, 013x—
52Observation does not meet minimum hours, qualifying diagnoses, and/or "T" procedure conditionsRTP (return to provider)Retired—
53Codes G0378 and G0379 only allowed with bill type 13x or 85xLIR (line item rejection)In effect, specific bill types—
54Multiple codes for the same serviceRTP (return to provider)Retired—
55Non-reportable for site of serviceRTP (return to provider)In effect, specific bill types—
56E/M condition not met and line item date for obs code G0378 is not 12/31/ or 1/1RTP (return to provider)Retired—
57E/M condition not met for observation and line item date for code G0378 is 1/1SUS (suspension)In effect, 013x—
58Direct admittance G0379 only allowed with obervation G0378RTP (return to provider)In effect, 013x—
59Clinical trial requires diagnosis code V707 as other than primary diagnosis (deleted retroactive to the earliest included version)RTP (return to provider)Retired—
60Use of modifier CA with more than one procedure not allowedRTP (return to provider)In effect, 013x—
61Service can only be billed to the DMERCRTP (return to provider)In effect, 013x—
62Code not recognized by OPPS; alternate code for same service may be availableRTP (return to provider)In effect, 013x—
63Occupational therapy service only billable on partial hospitalization claimsRTP (return to provider)Retired—
64Activity therapy service not payable outside the partial hospitalization programLIR (line item rejection)Retired—
66Code requires manual pricingSUS (suspension)In effect, 013x—
67Service provided prior to FDA approvalLID (line item denial)In effect, 013x—
68Service provided prior to date of National Coverage Determination (NCD) or Demonstration approvalLID (line item denial)In effect, 013xCARC 50, RARC N386
69Service provided outside approval periodLID (line item denial)In effect, 013x—
70CA modifier requires patient discharge status indicating expired or transferredRTP (return to provider)In effect, 013x—
71Claim lacks required device codeRTP (return to provider)Retired—
72Service not billable to the Medicare Administrative ContractorRTP (return to provider)In effect, 013x—
73Incorrect billing of blood and blood productsRTP (return to provider)In effect, 013x—
74Units greater than one for bilateral procedure billed with modifier 50RTP (return to provider)In effect, 013x—
76Trauma response critical care code without revenue code 068x and CPT 99291LIR (line item rejection)In effect, 013x—
77Claim lacks allowed procedure codeRTP (return to provider)Retired—
78Claim lacks required radiolabeled productRTP (return to provider)Retired—
79Incorrect billing of revenue code with HCPCS codeRTP (return to provider)In effect, 013x—
80Mental health code not approved for partial hospitalizationRTP (return to provider)In effect, specific bill types—
81Mental health service not payable outside the partial hospitalization programRTP (return to provider)In effect, 013x—
82Charge exceeds token charge ($1.00)RTP (return to provider)In effect, 013x—
83Service provided on or after effective date of NCDLID (line item denial)In effect, 013xCARC 50, RARC N386
84Claim lacks required primary codeRTP (return to provider)Retired—
85Claim lacks required device code or required procedure codeRTP (return to provider)Retired—
87Skin substitute application procedure without appropriate skin substitute product codeRTP (return to provider)In effect, 013x—
88FQHC payment code not reported for FQHC claimRTP (return to provider)In effect, specific bill types—
89FQHC claim lacks required qualifying visit codeRTP (return to provider)In effect, specific bill types—
91Item or service not covered under FQHC PPS or for RHCLIR (line item rejection)In effect, specific bill types—
92Device-intensive procedure reported without device codeRTP (return to provider)In effect, 013x—
93Corneal tissue processing reported without cornea transplant procedureLIR (line item rejection)In effect, 013x—
94Biosimilar HCPCS reported without biosimilar modifierRTP (return to provider)Retired—
957-day spanning partial hospitalization services require a minimum of 20 hours of service as evidenced in PHP plan of careLIR (line item rejection)In effect, specific bill types—
96Partial hospitalization interim claim from and through dates must span more than 4 daysRTP (return to provider)Retired—
97Partial hospitalization services are required to be billed weeklyRTP (return to provider)Retired—
98Claim with pass through device or device with payment limitation lacks required procedureRTP (return to provider)In effect, 013x—
99Claim with pass-through or non-pass-through drug or biological lacks OPPS payable procedureRTP (return to provider)In effect, 013x—
100Claim for HSCT allogeneic transplantation lacks required revenue code line for donor acquisition servicesRTP (return to provider)In effect, 013x—
101Item or service with modifier PN not allowed under PFSRTP (return to provider)In effect, 013x—
102Modifier pairing not allowed on the same lineRTP (return to provider)In effect, 013x—
104Service not eligible for all-inclusive rateLIR (line item rejection)In effect, specific bill types—
105Claim reported with pass-through device prior to FDA approval for the procedureLID (line item denial)In effect, 013x—
106Add-on code reported without required primary procedure codeLID (line item denial)In effect, 013x for specific codesCARC 107, RARC N122
107Add-on code reported without required contractor-defined primary procedure codeLID (line item denial)In effect, specific bill typesCARC 107, RARC N122
108Add-on code reported without required primary procedure or required contractor-defined primary procedure codeLID (line item denial)In effect, specific bill typesCARC 107, RARC N122
109Code first diagnosis present without mental health diagnosis as the first secondary diagnosisRTP (return to provider)In effect, specific bill types—
110Service provided prior to initial marketing dateLIR (line item rejection)In effect, 013x—
111Service cost is duplicative; included in cost of associated biologicalLIR (line item rejection)In effect, 013x—
112Information-Only ServiceLIR (line item rejection)In effect, 013x—
114Item or service not allowed with modifier CSRTP (return to provider)Retired—
115COVID-19 lab add-on code reported without required primary procedureLID (line item denial)Retired—
116Opioid treatment program service not payable outside the opioid treatment programRTP (return to provider)In effect, 013x—
117Token charge less than $1.01 billed by providerLIR (line item rejection)In effect, 013x—
120Incorrect reporting of modifier PTRTP (return to provider)In effect, 013x—
121Non-covered service reported with inpatient only procedure where the patient expired or transferredLID (line item denial)In effect, 013x—
122340B-acquired drug modifier(s) reported inappropriatelyRTP (return to provider)Retired—
124HCPCS reported after CMS termination dateRTP (return to provider)In effect, 013x—
125Incorrect billing of IMRT planning and deliveryRTP (return to provider)In effect, 013x—
126Incorrect reporting of telehealth modifierRTP (return to provider)In effect, specific bill types—
128Insufficient services on day of IOPLIR (line item rejection)In effect, specific bill types—
129Weekly IOP services require a minimum of 9 hours of serviceLIR (line item rejection)In effect, specific bill types—
130Incorrect reporting of modifier on RHC IOP claimRTP (return to provider)In effect, specific bill types—
131Insufficient services on day of PHPLIR (line item rejection)In effect, specific bill types—
132Mental health code not approved for Intensive Outpatient ProgramRTP (return to provider)In effect, specific bill types—
133Mental health service not payable outside the Intensive Outpatient programRTP (return to provider)In effect, 013x—
134Service provided outside designated approval periodLIR (line item rejection)In effect, 013x—
135Claim Day lacks required device codeRTP (return to provider)In effect, 013x—
136Service provided prior to ACIP approval dateLIR (line item rejection)In effect, 013x—
137More than 2 non-opioid pain relief devices reportedLIR (line item rejection)In effect, 013x—
138More than 3 non-opioid surgical pain drugs reportedLIR (line item rejection)In effect, 013x—
139Telehealth service reported incorrectly with modifier 93 or 95RTP (return to provider)In effect, 013x—
140Non-BLA skin substitute product reported incorrectly with modifier JW or JZRTP (return to provider)In effect, 013x—
141HCPCS reported on or after mid-quarter effective date with bypassed or converted SI and/or APCLIR (line item rejection)In effect, 013x—
192Multiple occurrences of the same Payer Value Code present; MAC to use a different Payer Only modifier on the line(s) that caused the claim to suspend which produces the next available Payer Value CodeSUS (suspension)In effect, 013x—
193HCPCS present with a Payer Only modifier for contractor bypass without MAC-provided Payer Value Code Z7 and Value Code amountSUS (suspension)In effect, 013x—

Modifier edits (4, 2 in effect)

Edits about the modifiers on a line: validity, pairing and dates.

I/OCE v27.3 modifier edits
EditEdit name (CMS)DispositionStatusDenial codes
22Invalid modifierRTP (return to provider)In effect, 013x—
75Incorrect billing of modifier FB or FCRTP (return to provider)Retired—
103Modifier reported prior to FDA approval dateLID (line item denial)Retired—
123Modifier used after CMS termination dateRTP (return to provider)In effect, 013x—

Date edits (1, 1 in effect)

Edits about the service dates on the claim.

I/OCE v27.3 date edits
EditEdit name (CMS)DispositionStatusDenial codes
23Invalid dateRTP (return to provider)In effect, 013x—

Revenue Center edits (7, 7 in effect)

Edits about revenue codes: validity, a missing HCPCS where one is required, and coverage.

I/OCE v27.3 revenue center edits
EditEdit name (CMS)DispositionStatusDenial codes
9Non-covered under any Medicare outpatient benefit for reasons other than statutory exclusionLID (line item denial)In effect, 013xCARC 96
41Invalid revenue codeRTP (return to provider)In effect, 013x—
48Revenue center requires HCPCSRTP (return to provider)In effect, 013x—
50Non-covered under any Medicare outpatient benefitRTP (return to provider)In effect, 013x—
65Revenue code not recognized by MedicareLIR (line item rejection)In effect, 013x—
90Incorrect revenue code reported for FQHC payment codeRTP (return to provider)In effect, specific bill types—
127Service not allowed for Part B Inpatient claimLIR (line item rejection)In effect, specific bill types—

111 edits in effect. Edit names are reproduced from the I/OCE edit table; the specification's full reason text, code lists and revenue-code descriptions are not reproduced. Status is read from the specification's version column and its bill type 013x edit list.

Working I/OCE edits in a denial queue

Sort the work by disposition first. Returned claims are the fastest to clear and the easiest to prevent, because almost every return-to-provider edit is a validity check that a claim scrubber can run before submission: code valid on the date of service, revenue code valid, modifier valid, dates inside the claim span. Line rejections from edits 20 and 40 point at coding and documentation; review them with the coder before resubmitting, since adding a modifier without support turns a rejection into an audit finding. Line denials such as edits 18, 49 and 106 to 108 need an appeal or a write-off decision, and the remark code on the 835 is the fastest way to tell them apart. Suspended claims need no action until the contractor asks for records. Each quarter, compare the new release against the edits your claims hit most, because a quarterly I/OCE update can add edits, change dispositions and retire edits.

The denial code reference explains each CARC and RARC with appeal steps, and the NCCI reference hub connects the edit tables behind edits 20, 40 and 106 to 108.

Where QuickIntell fits for outpatient claim edits

QuickRCM covers claim readiness, denials, posting and A/R with configurable automation and human review, which is where returned claims, rejected lines and denied lines from the outpatient code editor are corrected, resubmitted or appealed.

Frequently asked questions

What is the I/OCE?

The Integrated Outpatient Code Editor is the CMS software that Medicare Administrative Contractors run on institutional outpatient claims. It checks the codes on each line, applies the hospital NCCI code-pair and add-on code edits, assigns APCs and status indicators under the Outpatient Prospective Payment System, and returns edit numbers that tell the contractor what to do with the claim or line.

What does a return to provider (RTP) from the I/OCE mean?

The claim comes back to the hospital before it is adjudicated, so there is no remittance advice and nothing to appeal. Correct the item the edit names, such as an invalid code, revenue code, modifier or date, and resubmit the claim through the contractor's direct data entry or your clearinghouse.

Can a line item rejection be appealed?

No. A rejected line can be corrected and resubmitted but not appealed. A line item denial is the opposite: the line cannot simply be resubmitted, but the denial can be appealed. The I/OCE specification defines both dispositions this way.

What are I/OCE edits 20 and 40?

They are the hospital outpatient form of the NCCI procedure-to-procedure edits. Edit 20 marks the column-two code of a pair whose modifier indicator is 0, which no modifier can bypass; edit 40 marks the column-two code of a pair whose indicator is 1 when the line has no qualifying modifier. Both reject the line.

How often is the I/OCE updated?

Quarterly, effective January 1, April 1, July 1 and October 1, alongside the OPPS quarterly update. Each release keeps 28 prior quarters of logic so older claims are edited by the rules of their own dates.

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Disclaimer

Operational reference compiled from the CMS I/OCE quarterly release. The CARC and RARC matches are by definition; your contractor's remittance codes take precedence. Not legal, clinical or billing advice.

Found a figure that does not match the CMS file? Report a data correction with the CMS file and the value you expected; the request reaches the editorial team through the contact form.