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| Valid Value Code Set | Valid Value Code | Valid Value Name | Valid Value Description | Effective Start Date | Effective End Date |
|---|---|---|---|---|---|
| PROCEDURE-CODE-MOD | 1P | Performance Measure Exclusion Modifier due to Medical ReasonsReasons include | Not indicated (absence of organ/limb, already received/ performed, other)Contraindicated (patient allergic history, potential adverse drug interaction, other)Other medical reasons | 01/01/0001 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 21 | Prolonged E&M services | PROLONGED EVALUATION AND MANAGEMENT SERVICES: WHEN THE FACE-TO-FACE OR FLOOR/UNIT SERVICE(S) PROVIDED IS PROLONGED OR OTHERWISE GREATER THAN THAT USUALLY REQUIRED FOR THE HIGHEST LEVEL OF EVALUATION AND MANAGEMENT SERVICE WITHIN A GIVEN CATEGORY, IT MAY BE IDENTIFIED BY ADDING MODIFIER -21 TO THE EVALUATION AND MANAGEMENT CODE NUMBER OR BY USE OF THE SEPARATE FIVE DIGIT MODIFIER CODE 09921. A REPORT MAY ALSO BE APPROPRIATE. | 01/01/0001 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 22 | Unusual procedural services | Increased Procedural Services: When the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. Documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). Note: This modifier should not be appended to an E/M service. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 23 | Unusual anesthesia | Unusual Anesthesia: Occasionally, a procedure, which usually requires either no anesthesia or local anesthesia, because of unusual circumstances must be done under general anesthesia. This circumstance may be reported by adding modifier 23 to the procedure code of the basic service. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 24 | Unrelated e&m same md postop | Unrelated Evaluation and Management Service by the Same Physician or Other Qualified Health Care Professional During a Postoperative Period: The physician or other qualified health care professional may need to indicate that an evaluation and management service was performed during a postoperative period for a reason(s) unrelated to the original procedure. This circumstance may be reported by adding modifier 24 to the appropriate level of E/M service. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 25 | Sig sep iden e&m same md/day | Significant, Separately Identifiable Evaluation and Management Service by the Same Physician or Other Qualified Health Care Professional on the Same Day of the Procedure or Other Service: It may be necessary to indicate that on the day a procedure or service identified by a CPT code was performed, the patient's condition required a significant, separately identifiable E/M service above and beyond the other service provided or beyond the usual preoperative and postoperative care associated with the procedure that was performed. A significant, separately identifiable E/M service is defined or substantiated by documentation that satisfies the relevant criteria for the respective E/M service to be reported (see Evaluation and Management Services Guidelines for instructions on determining level of E/M service). The E/M service may be prompted by the symptom or condition for which the procedure and/or service was provided. As such, different diagnoses are not required for reporting of the E/M services on the same date. This circumstance may be reported by adding modifier 25 to the appropriate level of E/M service. Note: This modifier is not used to report an E/M service that resulted in a decision to perform surgery. See modifier 57 For significant, separately identifiable non-E/M services, see modifier 59. | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 26 | Professional component | Professional Component: Certain procedures are a combination of a physician or other qualified health care professional component and a technical component. When the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 27 | Mult outpat e/m enc samedate | Multiple Outpatient Hospital E/M Encounters on the Same Date: For hospital outpatient reporting purposes, utilization of hospital resources related to separate and distinct E/M encounters performed in multiple outpatient hospital settings on the same date may be reported by adding modifier 27 to each appropriate level outpatient and/or emergency department E/M code(s). This modifier provides a means of reporting circumstances involving evaluation and management services provided by physician(s) in more than one (multiple) outpatient hospital setting(s) (eg, hospital emergency department, clinic). Note: This modifier is not to be used for physician reporting of multiple E/M services performed by the same physician on the same date. For physician reporting of all outpatient evaluation and management services provided by the same physician on the same date and performed in multiple outpatient setting(s) (eg, hospital emergency department, clinic), see Evaluation and Management, Emergency Department, or Preventive Medicine Services codes. | 01/01/2006 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 2P | Performance Measure Exclusion Modifier due to Patient Reasons | Performance Measure Exclusion Modifier due to Patient ReasonsReasons include:Patient declinedEconomic, social, or religious reasonsOther patient reasons | 07/01/2007 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 32 | Mandated services | Mandated Services: Services related to mandated consultation and/or related services (eg, third party payer, governmental, legislative or regulatory requirement) may be identified by adding modifier 32 to the basic procedure. | 01/01/2000 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 33 | Preventive services | Preventive Services: When the primary purpose of the service is the delivery of an evidence based service in accordance with a US Preventive Services Task Force A or B rating in effect and other preventive services identified in preventive services mandates (legislative or regulatory), the service may be identified by adding 33 to the procedure. For separately reported services specifically identified as preventive, the modifier should not be used. | 01/01/2011 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 3P | Performance Measure Exclusion Modifier due to System Reasons | Performance Measure Exclusion Modifier due to System ReasonsReasons include:Resources to perform the services not availableInsurance coverage/payor-related limitationsOther reasons attributable to health care delivery systemModifier 8P is intended to be used as a "reporting modifier" to allow the reporting of circumstances when an action described in a measure's numerator is not performed and the reason is not otherwise specified. | 07/01/2007 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 47 | Anesthesia by surgeon | Anesthesia by Surgeon: Regional or general anesthesia provided by the surgeon may be reported by adding modifier 47 to the basic service. (This does not include local anesthesia.) Note: Modifier 47 would not be used as a modifier for the anesthesia procedures. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 50 | Bilateral procedure | Bilateral Procedure: Unless otherwise identified in thelistings, bilateral procedures that are performed at the samesession, should be identified by adding modifier 50 to theappropriate 5 digit code. Note: This modifier should not beappended to designated "add-on" codes (see Appendix D). | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 51 | Multiple procedures | Multiple Procedures: When multiple procedures, other than E/M services, Physical Medicine and Rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. The additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). Note: This modifier should not be appended to designated "add-on" codes (see Appendix D). | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 52 | Reduced services | Reduced Services: Under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. Under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. This provides a means of reporting reduced services without disturbing the identification of the basic service. Note: For hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for ASC hospital outpatient use). | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 53 | Discontinued procedure | Discontinued Procedure: Under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. Due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. This circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. Note: This modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. For outpatient hospital/ambulatory surgery center (ASC) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for ASC hospital outpatient use). | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 54 | Surgical care only | Surgical Care Only: When 1 physician or other qualified health care professional performs a surgical procedure and another provides preoperative and/or postoperative management, surgical services may be identified by adding modifier 54 to the usual procedure number. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 55 | Postoperative managemnt only | Postoperative Management Only: When 1 physician or other qualified health care professional performed the postoperative management and another performed the surgical procedure, the postoperative component may be identified by adding modifier 55 to the usual procedure number. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 56 | Preoperative management only | Preoperative Management Only: When 1 physician or other qualified health care professional performed the preoperative care and evaluation and another performed the surgical procedure, the preoperative component may be identified by adding modifier 56 to the usual procedure number. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 57 | Decision for surgery | Decision for Surgery: An evaluation and management service that resulted in the initial decision to perform the surgery may be identified by adding modifier 57 to the appropriate level of E/M service. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 58 | Staged/rel proc sm md postop | Staged or Related Procedure or Service by the Same Physician or Other Qualified Health Care Professional During the Postoperative Period: It may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. This circumstance may be reported by adding modifier 58 to the staged or related procedure. Note: For treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 59 | Distinct procedural service | Distinct Procedural Service: Under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-E/M services performed on the same day. Modifier 59 is used to identify procedures/services, other than E/M services, that are not normally reported together, but are appropriate under the circumstances. Documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. However, when another already established modifier is appropriate it should be used rather than modifier 59. Only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. Note: Modifier 59 should not be appended to an E/M service. To report a separate and distinct E/M service with a non-E/M service performed on the same date, see modifier 25. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 62 | Two surgeons | Two Surgeons: When 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. Each surgeon should report the co-surgery once using the same procedure code. If additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. Note: If a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate. | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 63 | Proc perform on infants <4kg | Procedure Performed on Infants less than 4 kg:Procedures performed on neonates and infants up to apresent body weight of 4 kg may involve significantlyincreased complexity and physician or other qualifiedhealth care professional work commonly associated withthese patients. This circumstance may be reported byadding modifier 63 to the procedure number. Note: Unlessotherwise designated, this modifier may only be appendedto procedures/services listed in the 20100-69990 code seriesand 92920, 92928, 92953, 92960, 92986, 92987, 92990,92997, 92998, 93312, 93313, 93314, 93315, 93316,93317, 93318, 93452, 93505, 93563, 93564, 93568,93569, 93573, 93574, 93575, 93580, 93581, 93582,93590, 93591, 93592, 93593, 93594, 93595, 93596,93597, 93598, 93615, 93616 from the Medicine/Cardiovascular section. Modifier 63 should not beappended to any CPT codes listed in the Evaluation andManagement Services, Anesthesia, Radiology, Pathologyand Laboratory, or Medicine sections (other than thoseidentified above from the Medicine/Cardiovascularsection). | 01/01/2006 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 66 | Surgical team | Surgical Team: Under some circumstances, highly complex procedures (requiring the concomitant services of several physicians or other qualified health care professionals, often of different specialties, plus other highly skilled, specially trained personnel, various types of complex equipment) are carried out under the "surgical team" concept. Such circumstances may be identified by each participating individual with the addition of modifier 66 to the basic procedure number used for reporting services. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 73 | Proc discntd prior to anes | Discontinued out-patient hospital/ambulatory surgery center (asc) procedure prior to the administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may cancel a surgical or diagnostic procedure subsequent to the patient's surgical preparation (including sedation when provided, and being taken to the room where the procedure is to be performed), but prior to the administration of anesthesia (local, regional block(s) or general). under these circumstances, the intended service that is prepared for but cancelled can be reported by its usual procedure number and the addition of the modifier -73 or by use of the separate five digit modifier code 09973. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier -53. | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 74 | Proc discntd after anesth | Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of the modifier -74 or by use of the separate five digit modifier code 09974. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier -53. | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 76 | Repeat procedure by same md | Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional: It may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. This circumstance may be reported by adding modifier 76 to the repeated procedure or service. Note: This modifier should not be appended to an E/M service. | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 77 | Repeat procedure another md | Repeat Procedure by Another Physician or Other Qualified Health Care Professional: It may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. This circumstance may be reported by adding modifier 77 to the repeated procedure or service. Note: This modifier should not be appended to an E/M service. | 01/01/1999 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 78 | Return to or rel svc postop | Unplanned Return to the Operating/Procedure Room by the Same Physician or Other Qualified Health Care Professional Following Initial Procedure for a Related Procedure During the Postoperative Period: It may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). When this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (For repeat procedures, see modifier 76.) | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 79 | Unrel proc/svc sm md postop | Unrelated Procedure or Service by the Same Physician or Other Qualified Health Care Professional During the Postoperative Period: The individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. This circumstance may be reported by using modifier 79. (For repeat procedures on the same day, see modifier 76.) | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 80 | Assistant surgeon | Assistant Surgeon: Surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s). | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 81 | Minimum assistant surgeon | Minimum Assistant Surgeon: Minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 82 | Asst surgeon (res not avail) | Assistant Surgeon (when qualified resident surgeon not available): The unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s). | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 8P | Performance modifier nos | Performance measure reporting modifier–action not performed, reason not otherwise specifiedE1 Upper left, eyelid | 07/01/2007 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 90 | Reference (outside) lab | Reference (Outside) Laboratory: When laboratory procedures are performed by a party other than the treating or reporting physician or other qualified health care professional, the procedure may be identified by adding modifier 90 to the usual procedure number. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 91 | Repeat clincl diag lab test | Repeat Clinical Diagnostic Laboratory Test: In the course of treatment of the patient, it may be necessary to repeat the same laboratory test on the same day to obtain subsequent (multiple) test results. Under these circumstances, the laboratory test performed can be identified by its usual procedure number and the addition of modifier 91. Note: This modifier may not be used when tests are rerun to confirm initial results; due to testing problems with specimens or equipment; or for any other reason when a normal, one-time, reportable result is all that is required. This modifier may not be used when other code(s) describe a series of test results (eg, glucose tolerance tests, evocative/suppression testing). This modifier may only be used for laboratory test(s) performed more than once on the same day on the same patient. | 01/01/2000 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 92 | Alt lab platform testing | Alternative Laboratory Platform Testing: When laboratory testing is being performed using a kit or transportable instrument that wholly or in part consists of a single use, disposable analytical chamber, the service may be identified by adding modifier 92 to the usual laboratory procedure code (HIV testing 86701-86703, and 87389). The test does not require permanent dedicated space, hence by its design may be hand carried or transported to the vicinity of the patient for immediate testing at that site, although location of the testing is not in itself determinative of the use of this modifier. | 01/01/2018 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 93 | Synchronous Telemedicine Service Rendered ViaTelephone or Other Real-Time Interactive Audio-OnlyTelecommunications System | Synchronous telemedicineservice is defined as a real-time interaction between aphysician or other qualified health care professional and apatient who is located away at a distant site from thephysician or other qualified health care professional. Thetotality of the communication of information exchangedbetween the physician or other qualified health careprofessional and the patient during the course of thesynchronous telemedicine service must be of an amountand nature that is sufficient to meet the key componentsand/or requirements of the same service when rendered viaa face-to-face interaction. | 01/01/0001 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 95 | Synchronous telemed svc | Synchronous Telemedicine Service Rendered Via a Real-Time Interactive Audio and Video Telecommunications System: Synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located at a distant site from the physician or other qualified health care professional. The totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that would be sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction. Modifier 95 may only be appended to the services listed in Appendix P. Appendix P is the list of CPT codes for services that are typically performed face-to-face, but may be rendered via a real-time (synchronous) interactive audio and video telecommunications system. | 01/01/2018 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 96 | Habilitative services | Habilitative Services: When a service or procedure thatmay be either habilitative or rehabilitative in nature isprovided for habilitative purposes, the physician or otherqualified health care professional may add modifier 96 tothe service or procedure code to indicate that the service orprocedure provided was a habilitative service. Habilitativeservices help an individual learn skills and functioning fordaily living that the individual has not yet developed, andthen keep and/or improve those learned skills. Habilitativeservices also help an individual keep, learn, or improve skillsand functioning for daily living. | 01/01/2018 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 97 | Rehabilitative services | Rehabilitative Services: When a service or procedurethat may be either habilitative or rehabilitative in nature isprovided for rehabilitative purposes, the physician or otherqualified health care professional may add modifier 97 tothe service or procedure code to indicate that the service orprocedure provided was a rehabilitative service.Rehabilitative services help an individual keep, get back, orimprove skills and functioning for daily living that havebeen lost or impaired because the individual was sick, hurt,or disabled. | 01/01/2018 | 12/31/9999 |
| PROCEDURE-CODE-MOD | 99 | Multiple modifiers | Multiple Modifiers: Under certain circumstances 2 or more modifiers may be necessary to completely delineate a service. In such situations modifier 99 should be added to the basic procedure, and other applicable modifiers may be listed as part of the description of the service. | 01/01/1997 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A1 | Dressing for one wound | Dressing for one wound | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A2 | Dressing for two wounds | Dressing for two wounds | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A3 | Dressing for three wounds | Dressing for three wounds | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A4 | Dressing for four wounds | Dressing for four wounds | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A5 | Dressing for five wounds | Dressing for five wounds | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A6 | Dressing for six wounds | Dressing for six wounds | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A7 | Dressing for seven wounds | Dressing for seven wounds | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A8 | Dressing for eight wounds | Dressing for eight wounds | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | A9 | Dressing for 9 or more wound | Dressing for nine or more wounds | 07/01/2002 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AA | Anesthesia perf by anesgst | Anesthesia services performed personally by anesthesiologist | 01/01/1984 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AB | Aud svs w/o order evry 12mo | Audiology service furnished personally by an audiologist without a physician/npp order for non-acute hearing assessment unrelated to disequilibrium, or hearing aids, or examinations for the purpose of prescribing, fitting, or changing hearing aids; service may be performed once every 12 months, per beneficiary | 01/01/2023 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AD | Md supervision, >4 anes proc | Medical supervision by a physician: more than four concurrent anesthesia procedures | 01/01/1984 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AE | Registered dietician | Registered dietician | 01/01/2005 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AF | Specialty physician | Specialty physician | 01/01/2005 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AG | Primary physician | Primary physician | 01/01/2005 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AH | Clinical psychologist | Clinical psychologist | 01/01/1991 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AI | Principal physician of rec | Principal physician of record | 01/01/2010 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AJ | Clinical social worker | Clinical social worker | 01/01/1991 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AK | Non participating physician | Non participating physician | 01/01/2005 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AM | Physician, team member svc | Physician, team member service | 01/01/1991 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AO | Prov declined alt pmt method | Alternate payment method declined by provider of service | 10/01/2013 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AP | No dtmn of refractive state | Determination of refractive state was not performed in the course of diagnostic ophthalmological examination | 01/01/1984 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AQ | Physician service hpsa area | Physician providing a service in an unlisted health professional shortage area (hpsa) | 01/01/2006 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AR | Physician scarcity area | Physician provider services in a physician scarcity area | 01/01/2005 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AS | Assistant at surgery service | Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery | 01/01/1988 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AT | Acute treatment | Acute treatment (this modifier should be used when reporting service 98940, 98941, 98942) | 01/01/1984 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AU | Uro, ostomy or trach item | Item furnished in conjunction with a urological, ostomy, or tracheostomy supply | 01/01/2003 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AV | Item w prosthetic/orthotic | Item furnished in conjunction with a prosthetic device, prosthetic or orthotic | 01/01/2003 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AW | Item w a surgical dressing | Item furnished in conjunction with a surgical dressing | 01/01/2003 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AX | Item w dialysis services | Item furnished in conjunction with dialysis services | 01/01/2003 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AY | Item/service not for esrd tx | Item or service furnished to an esrd patient that is not for the treatment of esrd | 01/01/2011 | 12/31/9999 |
| PROCEDURE-CODE-MOD | AZ | Physician serv in dent hpsa | Physician providing a service in a dental health professional shortage area for the purpose of an electronic health record incentive payment | 01/01/2011 | 12/31/9999 |
| PROCEDURE-CODE-MOD | BA | Item w pen services | Item furnished in conjunction with parenteral enteral nutrition (pen) services | 01/01/2003 | 12/31/9999 |
| PROCEDURE-CODE-MOD | BL | Spec acquisition blood prods | Special acquisition of blood and blood products | 07/01/2005 | 12/31/9999 |
| PROCEDURE-CODE-MOD | BO | Nutrition oral admin no tube | Orally administered nutrition, not by feeding tube | 01/01/2003 | 12/31/9999 |
| PROCEDURE-CODE-MOD | BP | Bene electd to purchase item | The beneficiary has been informed of the purchase and rental options and has elected to purchase the item | 01/01/1992 | 12/31/9999 |
| PROCEDURE-CODE-MOD | BR | Bene elected to rent item | The beneficiary has been informed of the purchase and rental options and has elected to rent the item | 01/01/1992 | 12/31/9999 |
| PROCEDURE-CODE-MOD | BU | Bene undecided on purch/rent | The beneficiary has been informed of the purchase and rental options and after 30 days has not informed the supplier of his/her decision | 01/01/1992 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CA | Procedure payable inpatient | Procedure payable only in the inpatient setting when performed emergently on an outpatient who expires prior to admission | 01/01/2003 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CB | Esrd bene part a snf-sep pay | Service 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 | 04/01/2003 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CC | Procedure code change | Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed) | 01/01/1990 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CD | Amcc test for esrd or mcp md | Amcc test has been ordered by an esrd facility or mcp physician that is part of the composite rate and is not separately billable | 01/01/2004 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CE | Med neces amcc tst sep reimb | Amcc 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 | 01/01/2004 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CF | Amcc tst not composite rate | Amcc test has been ordered by an esrd facility or mcp physician that is not part of the composite rate and is separately billable | 01/01/2004 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CG | Policy criteria applied | Policy criteria applied | 07/01/2008 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CH | 0 percent impaired, ltd, res | 0 percent impaired, limited or restricted | 01/01/2013 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CI | 1 to <20 percent impaired | At least 1 percent but less than 20 percent impaired, limited or restricted | 01/01/2013 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CJ | 20 to <40 percent impaired | At least 20 percent but less than 40 percent impaired, limited or restricted | 01/01/2013 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CK | 40 to <60 percent impaired | At least 40 percent but less than 60 percent impaired, limited or restricted | 01/01/2013 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CL | 60 to <80 percent impaired | At least 60 percent but less than 80 percent impaired, limited or restricted | 01/01/2013 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CM | 80 to <100 percent impaired | At least 80 percent but less than 100 percent impaired, limited or restricted | 01/01/2013 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CN | 100 percent impaired, ltd | 100 percent impaired, limited or restricted | 01/01/2013 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CO | Outpatient ot service by ota | Outpatient occupational therapy services furnished in whole or in part by an occupational therapy assistant | 01/01/2019 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CP | C-apc adjunctive service | Adjunctive service related to a procedure assigned to a comprehensive ambulatory payment classification (c-apc) procedure, but reported on a different claim | 01/01/2016 | 12/31/2017 |
| PROCEDURE-CODE-MOD | CQ | Outpatient pt service by pta | Outpatient physical therapy services furnished in whole or in part by a physical therapist assistant | 01/01/2019 | 12/31/9999 |
| PROCEDURE-CODE-MOD | CR | Catastrophe/disaster related | Catastrophe/disaster related | 08/21/2005 | 12/31/9999 |
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