CPT code 59020: Fetal stress test, contraction-induced monitoring2026 Medicare rate & RVUs

Medicare pays $72.81 for 59020 nationally in the office. Local office rates run $63.38–$92.15.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 59020 covers

An obstetric clinician uses fetal heart rate and uterine activity monitoring to assess how the fetus responds to contractions. Contractions may occur spontaneously or be induced for testing. The service is generally performed in an obstetric setting when fetal status needs assessment before labor; it is distinct from monitoring a fetus during labor. The record should identify the reason for testing and include the monitoring findings and interpretation.

Report one service for the fetal contraction stress test, supported by documentation that contractions and the fetal heart rate response were evaluated. CMS treats this as a diagnostic test: modifier 26 reports the professional interpretation, modifier TC reports the technical service, and no modifier reports the global service. The 0-day global period includes same-day preoperative and postoperative care. Modifier 50 is inappropriate for this single fetal test. Assistant-at-surgery payment requires documented medical necessity; co-surgeon and team-surgery payment are not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 59020 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

59020 rates by state

Office rate range in each state. Select a state to see its payment localities.

How the 59020 rate is calculated

Each of 59020’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 59020

The CMS indicators that decide how 59020 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

59020 compared with similar codes

How to choose

59025Fetal testingNonstress test

Choose 59020 when fetal heart rate response to uterine contractions is assessed; choose 59025 for a non-stress test without contraction stress.

59050Labor monitoringConsultant monitoring and report

59050 concerns fetal monitoring during labor with a written report. Code 59020 describes contraction stress testing for antepartum fetal assessment.

59051Fetal monitoringInterpretation only during labor

59051 reports interpretation of fetal monitoring during labor. Code 59020 reports the contraction stress test, not labor-monitor interpretation alone.

Codes related to 59020

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates