Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
CareerCenter
Medical Coding Job Board
Log in Register free account

Need help choosing the right code?

Ask CasePilot about procedures, modifiers, bundling, and coding guidance.

Try CasePilot

Official Description

Antibody; protozoa, not elsewhere specified

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 86753 refers to a laboratory test that measures antibodies to protozoa that are not specifically categorized elsewhere. This test is particularly significant for detecting IgG antibodies in blood serum against various protozoan parasites, including Entamoeba histolytica, Trypanosoma cruzi, Babesia microti, and Babesia duncani. The presence of positive antibody titers indicates either a current or past infection with these parasites. Understanding the implications of these infections is crucial, as they can lead to a range of health issues. For instance, E. histolytica is commonly associated with tropical regions where sanitation is inadequate, and it can cause mild gastrointestinal symptoms or more severe conditions such as amebic dysentery, liver abscesses, or infections in the brain and lungs. T. cruzi, the causative agent of Chagas disease, poses a significant health risk in the Americas, particularly in impoverished rural areas, and can lead to acute symptoms like fever and fatigue, as well as chronic complications affecting the heart and digestive system. Babesia microti and Babesia duncani are transmitted by ticks and can result in flu-like symptoms and hemolytic anemia, especially in vulnerable populations such as the elderly and immunocompromised individuals. This code is essential for the accurate diagnosis and management of these protozoan infections.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The CPT® Code 86753 is indicated for use in the following scenarios:

  • Detection of Antibodies This test is performed to detect the presence of antibodies against protozoa that are not specified elsewhere, aiding in the diagnosis of infections.
  • Assessment of Current or Past Infections Positive antibody titers can suggest either a current or past infection with specific protozoan parasites, providing critical information for patient management.
  • Evaluation of Symptoms The test may be indicated for patients presenting with symptoms consistent with infections caused by protozoa, such as gastrointestinal distress, fever, or flu-like symptoms.
  • Monitoring of High-Risk Populations Individuals in endemic areas or those with potential exposure to vectors, such as ticks or contaminated water, may require testing to assess their risk of infection.

2. Procedure

The procedure for conducting the test associated with CPT® Code 86753 involves several key steps:

  • Sample Collection A blood sample is collected from the patient, typically through venipuncture. This sample is then processed to obtain serum, which is necessary for the antibody testing.
  • Serum Preparation The collected blood is allowed to clot, and then it is centrifuged to separate the serum from the cellular components. The serum is the portion that will be tested for antibodies.
  • Testing Methodology The serum is subjected to specific laboratory techniques, such as enzyme-linked immunosorbent assay (ELISA) or indirect immunofluorescence, to detect the presence of IgG antibodies against the protozoan parasites.
  • Result Interpretation After the testing is completed, the results are analyzed. A positive result indicates the presence of antibodies, suggesting a current or past infection, while a negative result suggests no detectable antibodies.

3. Post-Procedure

Post-procedure care for patients undergoing testing with CPT® Code 86753 typically involves providing the patient with information regarding the test results and any necessary follow-up actions. If the test results are positive, further clinical evaluation may be warranted to determine the appropriate treatment plan based on the specific protozoan infection identified. Patients may also be advised on monitoring for symptoms and the importance of follow-up testing if indicated. Additionally, healthcare providers should ensure that patients understand the implications of their results and any potential need for lifestyle or environmental changes to reduce the risk of future infections.

Short Descr PROTOZOA ANTIBODY NOS
Medium Descr ANTIBODY PROTOZOA NES
Long Descr Antibody; protozoa, not elsewhere specified
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 3
CCS Clinical Classification 235 - Other Laboratory
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.
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.
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
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
GZ Item or service expected to be denied as not reasonable and necessary
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q4 Service for ordering/referring physician qualifies as a service exemption
Date
Action
Notes
1993-01-01 Added First appearance in code book in 1993.
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"