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The CPT® Code 99100 is utilized to indicate the provision of anesthesia services for patients who fall into the category of extreme age, specifically those who are younger than 1 year or older than 70 years. This code serves as an additional qualifying circumstance that highlights the complexities and considerations involved in administering anesthesia to these age groups. It is important to note that this code cannot be reported independently; it must be used in conjunction with the codes for the primary anesthesia procedure being performed. The rationale behind this coding is that patients at these extreme ages often present unique physiological challenges and risks that necessitate heightened attention and specialized management during anesthesia. Therefore, the use of this code underscores the need for additional resources and careful monitoring when providing anesthesia to these vulnerable populations.
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The use of CPT® Code 99100 is indicated for patients who are classified as being of extreme age, which includes:
When utilizing CPT® Code 99100, the following procedural steps should be adhered to in conjunction with the primary anesthesia procedure:
Following the administration of anesthesia using CPT® Code 99100, it is essential to provide appropriate post-procedure care. This includes monitoring the patient for any adverse reactions or complications that may be more prevalent in those of extreme age. Recovery protocols should be adjusted to accommodate the specific needs of these patients, ensuring that they are stable before discharge. Additionally, clear communication with the patient and their caregivers regarding any potential side effects or follow-up care is crucial to ensure a safe recovery process.
| Short Descr | ANES PT EXTEME AGE<1 YR&>70 | Medium Descr | ANESTHESIA EXTREME AGE PATIENT<1 YR&>70 | Long Descr | Anesthesia for patient of extreme age, younger than 1 year and older than 70 (List separately in addition to code for primary anesthesia procedure) | Status Code | Bundled Code | Global Days | ZZZ - Code Related to Another Service | PC/TC Indicator (26, TC) | 9 - Not Applicable | Multiple Procedures (51) | 9 - Concept does not apply. | Bilateral Surgery (50) | 9 - Concept does not apply. | Physician Supervisions | 09 - Concept does not apply. | Assistant Surgeon (80, 82) | 9 - Concept does not apply. | Co-Surgeons (62) | 9 - Concept does not apply. | Team Surgery (66) | 9 - Concept does not apply. | Diagnostic Imaging Family | 99 - Concept Does Not Apply | APC Status Indicator | Code Not Recognized by OPPS when submitted on Outpatient Hospital Part B Bill Type (12x/13x) | Type of Service (TOS) | 7 - Anesthesia | Berenson-Eggers TOS (BETOS) | P0 - Anesthesia | MUE | 1 | CCS Clinical Classification | 232 - Anesthesia |
| X4 | Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period | GY | Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit | GC | This service has been performed in part by a resident under the direction of a teaching physician | 59 | 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. | QZ | Crna service: without medical direction by a physician | Q1 | Routine clinical service provided in a clinical research study that is in an approved clinical research study | CR | Catastrophe/disaster related | P3 | A patient with severe systemic disease | Q6 | Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area | QS | Monitored anesthesia care service | KX | Requirements specified in the medical policy have been met | XU | Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service | P4 | A patient with severe systemic disease that is a constant threat to life | P2 | A patient with mild systemic disease | Q0 | Investigational clinical service provided in a clinical research study that is in an approved clinical research study | AA | Anesthesia services performed personally by anesthesiologist | GA | Waiver of liability statement issued as required by payer policy, individual case | GW | Service not related to the hospice patient's terminal condition | X5 | Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician | AQ | Physician providing a service in an unlisted health professional shortage area (hpsa) | 22 | 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. | 25 | 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. | 26 | 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. | 58 | 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. | 76 | 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. | 78 | 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.) | F8 | Right hand, fourth digit | GV | Attending physician not employed or paid under arrangement by the patient's hospice provider | GZ | Item or service expected to be denied as not reasonable and necessary | LT | Left side (used to identify procedures performed on the left side of the body) | MC | Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of electronic health record or clinical decision support mechanism vendor issues | P1 | A normal healthy patient | P5 | A moribund patient who is not expected to survive without the operation | Q3 | Live kidney donor surgery and related services | QK | Medical direction of two, three, or four concurrent anesthesia procedures involving qualified individuals | QX | Crna service: with medical direction by a physician | RT | Right side (used to identify procedures performed on the right side of the body) | TR | School-based individualized education program (iep) services provided outside the public school district responsible for the student | XE | Separate encounter, a service that is distinct because it occurred during a separate encounter | XS | Separate structure, a service that is distinct because it was performed on a separate organ/structure |
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| 2024-01-01 | Changed | Short and Medium Descriptions changed. |
| 2013-01-01 | Changed | Medium Descriptor changed. |
| 2011-01-01 | Changed | Medium description changed. |
| 2009-01-01 | Changed | Code description changed |
| 2007-01-01 | Changed | Code description changed. |
| 2003-01-01 | Changed | Code description changed. |
| Pre-1990 | Added | Code added. |
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