Twirla 3 Count Weekly Transdermal System
RxNorm 2396259

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 2396259 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: Twirla 3 Count Weekly Transdermal System.

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

PSN
Twirla 3 Count Weekly Transdermal System
AUI:12436351
View
SY
Twirla 3 Count Weekly Transdermal System
AUI:12436352
View
BPCK
{3 (168 HR ethinyl estradiol 0.00125 mg/HR / levonorgestrel 0.005 mg/HR Transdermal System [Twirla]) } Pack [Twirla 3 Count Weekly Patch]
AUI:12436060
View

This clinical crossover tool is designed for healthcare professionals, pharmacists, and data analysts to safely compare substitute products and manage medication interoperability.

PSNPrescribable

Prescribable Name (PSN):
Twirla 3 Count Weekly Transdermal System
(Atom ID: 12436351)

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
Twirla 3 Count Weekly Transdermal System
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)
2396259
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12436351
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
PSN
Prescribable Name (Synonym of another TTY, given for clarity and for display purposes in electronic prescribing applications. Only one PSN per concept.)
Source Code
2396259
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.
SYPrescribable

Synonym (SY):
Twirla 3 Count Weekly Transdermal System
(Atom ID: 12436352)

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
Twirla 3 Count Weekly Transdermal System
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)
2396259
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12436352
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
2396259
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.
BPCKPrescribable

Brand Name Pack (BPCK):
{3 (168 HR ethinyl estradiol 0.00125 mg/HR / levonorgestrel 0.005 mg/HR Transdermal System [Twirla]) } Pack [Twirla 3 Count Weekly Patch]
(Atom ID: 12436060)

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
{3 (168 HR ethinyl estradiol 0.00125 MG/HR / levonorgestrel 0.005 MG/HR Transdermal System [Twirla]) } Pack [Twirla 3 Count Weekly Patch]
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)
2396259
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12436060
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
BPCK
Brand Name Pack ({# (Ingredient Strength Dose Form) / # (Ingredient Strength Dose Form)} Pack [Brand Name])
Source Code
2396259
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.

Technical Attributes & Logic

RXN HUMAN DRUG
US
Drug available for use in Humans