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Official Description

Helicobacter pylori; breath test analysis for urease activity, non-radioactive isotope (eg, C-13)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 83013 refers to a laboratory test specifically designed to analyze breath samples for urease activity, utilizing a non-radioactive isotope, such as Carbon-13 (C-13). This test is primarily employed in the diagnosis and monitoring of Helicobacter pylori (H. pylori) infections, which are associated with various gastrointestinal conditions, including chronic active gastritis, duodenal ulcers, and nonulcerative dyspepsia. H. pylori is a type of bacterium that resides in the stomach, where it burrows into the gastric mucosa to access the less acidic epithelial cells. To survive in the harsh acidic environment of the stomach, H. pylori produces an enzyme known as urease. This enzyme plays a crucial role in the bacterium's ability to thrive, as it catalyzes the conversion of urea into ammonia and carbon dioxide, leading to inflammation and an immune response in the gastric lining. The testing process begins with the collection of a baseline breath sample from the patient. Following this, the patient ingests a capsule or solution containing 75 mg of reconstituted Pranactin-Citric, which includes (13) C-urea. Once ingested, the (13) C-urea is broken down in the stomach, producing (13) CO2 and ammonia. A second breath sample is collected approximately 13 to 18 minutes after ingestion. If H. pylori is present in the stomach, the urease produced by the bacteria will facilitate the conversion of (13) C-urea into (13) CO2, which is then absorbed into the bloodstream and subsequently exhaled. The analysis of the exhaled breath is conducted using quantitative infrared spectrophotometry, a method that allows for precise measurement of the (13) CO2 levels. The CPT® Code 83013 encompasses the analysis of the breath sample and includes the costs associated with the medication and test supplies necessary for the procedure.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The Helicobacter pylori breath test analysis (CPT® Code 83013) is indicated for the following conditions:

  • Chronic Active Gastritis - This condition involves inflammation of the stomach lining that persists over time, often associated with H. pylori infection.
  • Duodenal Ulcer - A type of peptic ulcer that occurs in the upper part of the small intestine, which can be linked to the presence of H. pylori.
  • Nonulcerative Dyspepsia - A term used to describe symptoms of indigestion that are not associated with ulcers, where H. pylori may be a contributing factor.

2. Procedure

The procedure for the Helicobacter pylori breath test analysis involves several key steps:

  • Step 1: Baseline Breath Sample Collection - Initially, a baseline breath sample is collected from the patient to establish a reference point for subsequent measurements.
  • Step 2: Administration of Pranactin-Citric - The patient is then instructed to ingest a capsule or solution containing 75 mg of reconstituted Pranactin-Citric, which contains (13) C-urea. This step is crucial as it introduces the substrate that will be metabolized by H. pylori if present.
  • Step 3: Post-Ingestion Breath Sample Collection - After a waiting period of approximately 13 to 18 minutes, a second breath sample is collected. This timing is essential to allow for the metabolic processes to occur in the stomach.
  • Step 4: Analysis of Breath Samples - The collected breath samples are then analyzed using quantitative infrared spectrophotometry. This method measures the levels of (13) CO2 in the exhaled breath, which indicates the presence of H. pylori based on the urease activity.

3. Post-Procedure

After the completion of the Helicobacter pylori breath test, patients may resume their normal activities immediately. There are typically no specific post-procedure care instructions required, as the test is non-invasive and does not involve any significant recovery time. However, it is important for healthcare providers to discuss the results with the patient once they are available, as this will guide further management and treatment options if H. pylori infection is confirmed.

Short Descr H PYLORI (C-13) BREATH
Medium Descr HPYLORI BREATH ANAL UREASE ACT NON-RADACT ISTOPE
Long Descr Helicobacter pylori; breath test analysis for urease activity, non-radioactive isotope (eg, C-13)
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 233 - Laboratory - Chemistry and Hematology
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.
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.
GA Waiver of liability statement issued as required by payer policy, individual case
GC This service has been performed in part by a resident under the direction of a teaching physician
Q4 Service for ordering/referring physician qualifies as a service exemption
GW Service not related to the hospice patient's terminal condition
GZ Item or service expected to be denied as not reasonable and necessary
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.
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.
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
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
QW Clia waived test
U6 Medicaid level of care 6, as defined by each state
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2011-01-01 Changed Short description changed.
2005-01-01 Changed Code description changed.
2002-01-01 Changed Code description changed.
2001-01-01 Changed Code description changed.
1999-01-01 Added First appearance in code book in 1999.
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