Ceftolozane 1000 mg / tazobactam 500 mg [Zerbaxa]
RxNorm 1656796

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 1656796 represents a standardized clinical drug concept used for cross-system interoperability. This concept aggregates multiple Atom IDs (AUIs), which are specific naming variations and synonyms used across pharmaceutical databases to ensure accurate medication mapping for: ceftolozane 1000 mg / tazobactam 500 mg [Zerbaxa].

The following semantic concepts and normalized strings are associated with this clinical entity:

SBDC
Ceftolozane 1000 mg / tazobactam 500 mg [Zerbaxa]
AUI:7250539
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This clinical crossover tool is designed for healthcare professionals, pharmacists, and data analysts to safely compare substitute products and manage medication interoperability.

SBDCPrescribable

Semantic Branded Drug Component (SBDC):
Ceftolozane 1000 mg / tazobactam 500 mg [Zerbaxa]
(Atom ID: 7250539)

Clinical Status & Identity

Prescribable Status
YES (Active)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
ceftolozane 1000 MG / tazobactam 500 MG [Zerbaxa]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
N
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
1656796
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
7250539
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SBDC
Semantic Branded Drug Component (Ingredient + Strength + Brand Name)
Source Code
1656796
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
RxNorm Vocabulary (RXNORM)
The official name and abbreviation for the vocabulary source.
Source Version
20AA_260601F
The specific version of the vocabulary provided by the source.
Update Date
June 01, 2026
The date when this RxNorm data was last updated by the NLM.
License Contact
RxNorm Customer Service, , U.S. National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, (888) FIND-NLM, , https://support.nlm.nih.gov/support/create-case/, https://www.nlm.nih.gov/research/umls/rxnorm/
Source licensing contact information.

Patient Education

Ceftolozane and Tazobactam Injection


The combination of ceftolozane and tazobactam is used to treat certain infections including urinary tract infections and infections of the abdomen (stomach area). It is also used to treat certain types of pneumonia that developed in people who are on ventilators or who were in a hospital. Ceftolozane is in a class of antibiotics called cephalosporins. It works by killing bacteria. Tazobactam is in a class called beta-lactamase inhibitor. It works by preventing bacteria from destroying ceftolozane. Antibiotics will not work for colds, flu, or other viral infections.
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