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Official Description

Infectious agent detection by nucleic acid (DNA or RNA); vancomycin resistance (eg, enterococcus species van A, van B), amplified probe technique

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 87500 refers to the detection of infectious agents through nucleic acid testing, specifically focusing on vancomycin resistance in bacteria, such as enterococcus species van A and van B. This procedure employs an amplified probe technique, which is a sophisticated method used to identify the presence of specific genetic material associated with antibiotic resistance. Vancomycin is a potent antibiotic commonly utilized to treat infections caused by gram-positive bacteria. However, the emergence of vancomycin-resistant enterococci (VRE) poses significant challenges in clinical settings, as these bacteria are increasingly resistant to treatment. The amplified probe technique involves obtaining a specimen from the patient, isolating the bacteria, and treating the cells to expose single-stranded nucleic acid molecules. These target nucleic acids then hybridize with a complementary probe nucleic acid sequence, forming a stable double-stranded complex. The subsequent enzymatic cleavage of this complex releases fragments of the nucleic acid probe, indicating the presence of vancomycin resistance. This method not only confirms the resistance but also allows for the identification of the specific genotype, either A or B, providing critical information for effective patient management and treatment strategies.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 87500 is indicated for the detection of vancomycin-resistant enterococci (VRE), particularly the van A and van B genotypes. This testing is crucial in patients who are suspected of having infections caused by these resistant strains, especially in cases where traditional antibiotic treatments may fail. The following conditions may warrant the use of this procedure:

  • Suspected VRE Infection Patients presenting with symptoms of infection that may be caused by vancomycin-resistant enterococci.
  • Monitoring of Known VRE Carriers Individuals who are known carriers of VRE may require testing to monitor for active infections.
  • Preoperative Screening Patients undergoing surgical procedures, particularly those at high risk for infection, may be screened for VRE to prevent postoperative complications.

2. Procedure

The procedure for CPT® Code 87500 involves several critical steps to accurately detect vancomycin-resistant enterococci using the amplified probe technique. The following steps outline the process:

  • Step 1: Specimen Collection A specimen is obtained from the patient, which may include samples from various sites such as blood, urine, or wound cultures, depending on the suspected infection.
  • Step 2: Bacterial Isolation The specimen is processed to isolate the bacteria present. This may involve culturing the sample to encourage the growth of enterococci, allowing for further analysis.
  • Step 3: Nucleic Acid Extraction The isolated bacterial cells are treated to expose single-stranded target nucleic acid molecules. This step is crucial as it prepares the genetic material for hybridization with the probe.
  • Step 4: Hybridization The exposed target nucleic acids are then mixed with a complementary probe nucleic acid sequence. This allows the target and probe strands to hybridize, forming a stable double-stranded target-probe complex.
  • Step 5: Enzymatic Cleavage An enzyme is introduced to cleave the link of the target-probe complex. This enzymatic action releases one or more fragments of the nucleic acid probe, which indicates the presence of vancomycin resistance.
  • Step 6: Genotype Identification The nucleic acid probes used in this technique can also identify the specific genotype of the vancomycin-resistant enterococci, determining whether it is type A or B.

3. Post-Procedure

After the completion of the procedure associated with CPT® Code 87500, the results are analyzed to confirm the presence of vancomycin-resistant enterococci. If the test is positive, appropriate measures should be taken to manage the infection, which may include the use of alternative antibiotics that are effective against resistant strains. Additionally, infection control protocols should be implemented to prevent the spread of VRE within healthcare settings. Patients may require follow-up testing to monitor the effectiveness of treatment and to ensure that the infection is resolved. It is also essential to document the results and any subsequent actions taken in the patient's medical record for compliance and continuity of care.

Short Descr VANOMYCIN DNA AMP PROBE
Medium Descr INFECTIOUS AGENT DNA/RNA VANCOMYCIN RESISTANCE
Long Descr Infectious agent detection by nucleic acid (DNA or RNA); vancomycin resistance (eg, enterococcus species van A, van B), amplified probe technique
Status Code Statutory Exclusion (from MPFS, may be paid under other methodologies)
Global Days XXX - Global Concept Does Not Apply
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
CLIA Waived (QW) No
APC Status Indicator Conditionally packaged laboratory tests
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) T1H - Lab tests - other (non-Medicare fee schedule)
MUE 1
CCS Clinical Classification 206 - Microscopic examination (bacterial smear, culture, toxicology)
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.
90 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.
GW Service not related to the hospice patient's terminal condition
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
T8 Right foot, fourth digit
RT Right side (used to identify procedures performed on the right side of the body)
T3 Left foot, fourth digit
GA Waiver of liability statement issued as required by payer policy, individual case
LT Left side (used to identify procedures performed on the left side of the body)
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
T5 Right foot, great toe
T6 Right foot, second digit
GZ Item or service expected to be denied as not reasonable and necessary
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
91 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.
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
SA Nurse practitioner rendering service in collaboration with a physician
T2 Left foot, third digit
T9 Right foot, fifth digit
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.
77 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.
79 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.)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
KX Requirements specified in the medical policy have been met
QJ Services/items provided to a prisoner or patient in state or local custody, however the state or local government, as applicable, meets the requirements in 42 cfr 411.4 (b)
ST Related to trauma or injury
T1 Left foot, second digit
T4 Left foot, fifth digit
T7 Right foot, third digit
TA Left foot, great toe
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
Date
Action
Notes
2011-01-01 Changed Short description changed.
2008-01-01 Added First appearance in code book in 2008.
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