# Pharmacode > Source: https://docs.barcoder.ai/docs/standards/pharmacode > research date 2026-06-03 · extracted at 2026-10-03 > Publisher: Barcoder — encyclopedia of QR, barcode and payment-code standards Specifications: - [PHARMA-CODE - One-Track - BarTender Barcode Guide](https://barcodeguide.seagullscientific.com/content/symbologies/phamacode.htm) - [PHARMA-CODE Series #1: Introduction to Laetus PHARMA-CODE](https://www.laetus.com/en/knowledge-base/blog/pharma-code-series-1-introduction-to-laetus-pharma-code/) - [Pharmacode - Wikipedia](https://en.wikipedia.org/wiki/Pharmacode) ## Overview Pharmacode, also called the **Pharmaceutical Binary Code** or **Laetus code**, is a barcode standard used in the pharmaceutical industry as a packing-control system, designed to remain readable despite printing errors [3][3]. It encodes a single integer value as a sequence of alternating dark and light bars of two widths — narrow and wide — with no start/stop characters, no check digit and no human-readable text in the symbol itself [1][1] [2][2]. It is read from right to left; scanning left to right yields a different value because of the binary nature of the encoding [2][2]. ## History Pharmacode was developed by the German company **Laetus**, and the standard is formally known as the **Laetus PHARMA-CODE** [2][2] [3][3]. Laetus describes PHARMA-CODE as "older than UPC," having been used to prevent product intermixture in pharmaceutical packaging for "over 50 years" [2][2]. Its purpose is closed-loop, in-house packaging verification rather than retail identification: the code "matches and validates all of the component parts of a package to ensure that the right product, with all of its required documentation, goes into the right package" [2][2]. ## Technical specification - **Encoding.** Data is encoded in **binary** rather than decimal, using two bar widths: narrow and wide. Each narrow bar contributes 2^n and each wide bar contributes 2 × 2^n, where n is the bar's position [3][3]. - **Value range.** Pharmacode represents a single integer from **3 to 131,070**. The minimum (3) is two narrow bars; the maximum (131,070) is sixteen wide bars [1][1] [3][3]. - **Bar count.** Between 2 and 16 bars [1][1] [3][3]. For reliability, best practice is to always use at least three bars and to mix both thick and thin bars [3][3]. - **No check digit.** PHARMA-CODE includes no check digit [1][1]. - **No start/stop characters.** The symbol carries no start or stop pattern; the guide lists only an optional start bar and optional end bar [1][1] [2][2]. - **Scan direction.** Read **right to left**; left-to-right scanning produces a different result [2][2]. - **Quiet zone.** A quiet zone of **6 mm** is required on either side of the symbol [1][1]. - **Colour and robustness.** PHARMA-CODE can be printed in a range of colours so that colour-coded package inserts can themselves be verified, and the symbology is deliberately tolerant of printing imperfections [2][2] [3][3]. - **Decoding.** When a camera reads the binary pattern, a PHARMA-CODE decoder must be integrated to translate the binary value into a numeric format [2][2]. ## Use cases PHARMA-CODE is used for in-house inventory control and packaging security verification, ensuring that packaging materials and contents match and are correct [1][1]. It is typically printed on an inside flap of the pharmaceutical package and is not visible at point of sale, which is acceptable because it is a closed-loop control code rather than a retail identifier [2][2]. Laetus positions it as a cost-effective alternative to HIBC/GS1 codes for internal control because using the symbology carries no licensing cost [2][2]. ## Implementations - **JsBarcode** ([github.com/lindell/JsBarcode](https://github.com/lindell/JsBarcode)) — JavaScript, 5,864 stars, active 2026. Browser/Node barcode generator with a `pharmacode` format encoding 3–131070 [1][1]. - **Zint** ([github.com/zint/zint](https://github.com/zint/zint)) — C, 771 stars, active 2026. Encoding library supporting Pharmacode One-Track among 50+ symbologies. - **bwip-js** ([github.com/metafloor/bwip-js](https://github.com/metafloor/bwip-js)) — JavaScript, 2,381 stars, active 2026. JavaScript port of BWIPP. - **BWIPP** ([github.com/bwipp/postscriptbarcode](https://github.com/bwipp/postscriptbarcode)) — PostScript, 499 stars, active 2026. Barcode Writer in Pure PostScript. ## Comparison Pharmacode (one-track) and Two-Track Pharmacode are both Laetus packaging-control symbologies, but the one-track variant uses two **bar widths** to encode a single value from 3 to 131,070 [1][1], whereas the two-track variant uses two **bar heights** across two vertical tracks to extend the range up to 64,570,080 [4][4]. Both lack a check digit and require a 6 mm quiet zone [1][1] [4][4]. Unlike Code 32 (Italian Pharmacode) and PZN, which are Code 39 derivatives carrying nationally administered drug numbers, Pharmacode is a self-contained binary code with no national registry and no human-readable interpretation in the symbol. ## Fun facts - Because the code is read right to left and is pure binary, the same physical symbol scanned in the opposite direction decodes to a different, valid-looking number — a property that makes scan-direction handling a deliberate part of any decoder [2][2]. - Laetus claims PHARMA-CODE predates the UPC and has been in continuous pharmaceutical use for more than half a century [2][2]. ## Status Pharmacode remains in active, widespread use as a closed-loop packaging-control and print-verification code in pharmaceutical manufacturing, and is supported by current barcode tooling including JsBarcode (release v3.12.3, January 2026) [1][1]. It is complementary to, rather than competing with, the retail and serialization codes (GS1 DataMatrix, etc.) printed on the outside of packages. ## Sources [1]: https://barcodeguide.seagullscientific.com/content/symbologies/phamacode.htm [2]: https://www.laetus.com/en/knowledge-base/blog/pharma-code-series-1-introduction-to-laetus-pharma-code/ [3]: https://en.wikipedia.org/wiki/Pharmacode [4]: https://barcodeguide.seagullscientific.com/Content/Symbologies/TwoTrackPharmacode.htm [1] [PHARMA-CODE - One-Track - BarTender Barcode Guide](https://barcodeguide.seagullscientific.com/content/symbologies/phamacode.htm) — Seagull Scientific, accessed 2026 [2] [PHARMA-CODE Series #1: Introduction to Laetus PHARMA-CODE](https://www.laetus.com/en/knowledge-base/blog/pharma-code-series-1-introduction-to-laetus-pharma-code/) — Laetus GmbH [3] [Pharmacode](https://en.wikipedia.org/wiki/Pharmacode) — Wikipedia, accessed 2026 [4] [PHARMA-CODE - Two-Track - BarTender Barcode Guide](https://barcodeguide.seagullscientific.com/Content/Symbologies/TwoTrackPharmacode.htm) — Seagull Scientific, accessed 2026 ## Deployments _No country reports mention this standard by name._ ## Regions / aggregations not mapped to a single country - Universal