HL7 v2.7 Vocabulary
0.1.0 - ci-build

HL7 v2.7 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v27/ and changes regularly. See the Directory of published versions

## CodeSystem: Check Digit Scheme (2.7 - 1.3.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/checkDigitScheme | Version: 1.3.0
Active as of 2026-01-27 | Computable Name: CheckDigitScheme
Other Identifiers: OID:2.16.840.1.113883.18.22
Copyright/Legal: HL7 Inc., 2026

HL7-defined code system of concepts specifying the check digit scheme employed. Used in HL7 Version 2.x messaging in PPN, XCN and XON segments.

This Code system is referenced in the content logical definition of the following value sets:

- Hl7VScheckDigitScheme

Properties

This code system defines the following properties for its concepts

Name | Code | URI | Type | Description
versionIntroduced | versionIntroduced | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced | string | version when was this code introduced
versionDeprecated | versionDeprecated | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated | string | version when was this code deprecated
status | status | http://hl7.org/fhir/concept-properties#status | code | A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired
comment | comment | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment | string | A string that provides additional detail pertinent to the use or understanding of the concept
usage | usage | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage | string | usage notes for this code
modified | modified | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified | dateTime | date of last modification

Concepts

This case-sensitive code system `http://terminology.hl7.org/v2plusvocab/CodeSystem/checkDigitScheme` defines the following codes:

Code | Display | Definition | versionIntroduced | usage | Deutsch (German, de)
BCV | Bank Card Validation Number | Bank Card Validation Number | 2.6 | A non-embossed number included on bank cards and used to validate authenticity of the card and the person presenting the card |
ISO | ISO 7064: 1983 | ISO 7064: 1983 | 2.3.1 |  | ISO 7064: 1983
M10 | Mod 10 algorithm | Mod 10 algorithm | 2.2 |  | Modulo10-Verfahren
M11 | Mod 11 algorithm | Mod 11 algorithm | 2.1 |  | Modulo11-Verfahren
NPI | Check digit algorithm in the US National Provider Identifier | Check digit algorithm in the US National Provider Identifier | 2.3.1 |  |