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Official Description

Fetal non-stress test

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The fetal non-stress test, identified by CPT® Code 59025, is a diagnostic procedure used to assess the well-being of a fetus during pregnancy. This test involves the use of a fetal monitor to track the heart rate of the fetus in response to its movements. Unlike other tests, no medications are administered to induce fetal movement or uterine contractions, making this a non-invasive procedure. The primary goal of the non-stress test is to observe the natural movements of the fetus, which can provide valuable information about its health and overall condition. The test typically lasts around 30 minutes, during which the clinician may encourage fetal movement through gentle stimulation, such as rubbing the mother's abdomen or using a device that produces a loud noise. The heart rate of the fetus is recorded during these movements, allowing healthcare providers to evaluate the fetal heart rate patterns and determine if they are within a normal range, indicating a healthy fetal status.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The fetal non-stress test is performed for several specific indications related to the health and monitoring of the fetus during pregnancy. These indications include:

  • Assessment of Fetal Well-Being The test is used to evaluate the overall health of the fetus, particularly in high-risk pregnancies.
  • Monitoring of Fetal Heart Rate Patterns It helps in observing the fetal heart rate in relation to fetal movements, which can indicate the fetus's condition.
  • Evaluation of Potential Complications The non-stress test may be indicated in cases where there are concerns about fetal distress or complications such as intrauterine growth restriction.
  • Post-Term Pregnancy It is often performed in pregnancies that extend beyond the due date to ensure the fetus is still healthy.

2. Procedure

The procedure for conducting a fetal non-stress test involves several key steps that ensure accurate monitoring of the fetus's heart rate in response to its movements. The following steps outline the process:

  • Step 1: Patient Preparation The patient is positioned comfortably, typically in a reclining or semi-reclining position, to facilitate optimal monitoring of the fetus. This position helps in obtaining clear readings from the fetal monitor.
  • Step 2: Application of Fetal Monitor A fetal monitor is applied to the patient's abdomen. This device consists of sensors that detect the fetal heart rate and record it continuously throughout the test.
  • Step 3: Observation of Fetal Movements The clinician observes the fetal heart rate in relation to the fetus's spontaneous movements. The test does not involve any medication to stimulate these movements, allowing for a natural assessment of the fetus's activity.
  • Step 4: Encouragement of Fetal Movement If necessary, the clinician may encourage the fetus to move by gently rubbing the mother's abdomen or using a device that produces a loud noise. This stimulation can help elicit fetal movements that are crucial for the assessment.
  • Step 5: Recording Heart Rate As the fetus moves, the fetal monitor records the heart rate patterns. The clinician analyzes these patterns to determine if they are within a normal range, which indicates a healthy fetal response.
  • Step 6: Conclusion of the Test The test typically lasts about 30 minutes. After this period, the clinician reviews the recorded data to assess the fetal heart rate and movement patterns, providing insights into the fetus's well-being.

3. Post-Procedure

After the fetal non-stress test is completed, the clinician will review the results with the patient. If the fetal heart rate patterns are normal and indicate a healthy fetus, no further immediate action may be required. However, if there are concerns regarding the fetal heart rate or movement patterns, additional testing or monitoring may be recommended. The patient may be advised to continue regular prenatal care and monitoring, especially if the pregnancy is classified as high-risk. It is important for the patient to report any unusual symptoms or changes in fetal movement to their healthcare provider following the test.

Short Descr FETAL NON-STRESS TEST
Medium Descr FETAL NONSTRESS TEST
Long Descr Fetal non-stress test
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Multiple Reduction Applies
ASC Payment Indicator Office-based surgical procedure added to ASC list in CY 2008 or later with MPFS nonfacility PE RVUs; payment based on MPFS nonfacility PE RVUs.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P6C - Minor procedures - other (Medicare fee schedule)
MUE 2
CCS Clinical Classification 139 - Fetal monitoring
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.
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.
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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.
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main 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.
51 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).
52 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).
53 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).
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)
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
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
KX Requirements specified in the medical policy have been met
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
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
SB Nurse midwife
TC Technical component; under certain circumstances, a charge may be made for the technical component alone; under those circumstances the technical component charge is identified by adding modifier 'tc' to the usual procedure number; technical component charges are institutional charges and not billed separately by physicians; however, portable x-ray suppliers only bill for technical component and should utilize modifier tc; the charge data from portable x-ray suppliers will then be used to build customary and prevailing profiles
TH Obstetrical treatment/services, prenatal or postpartum
X1 Continuous/broad services: for reporting services by clinicians, who provide the principal care for a patient, with no planned endpoint of the relationship; services in this category represent comprehensive care, dealing with the entire scope of patient problems, either directly or in a care coordination role; reporting clinician service examples include, but are not limited to: primary care, and clinicians providing comprehensive care to patients in addition to specialty care
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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