HL7 v2.8.1 Vocabulary
0.1.0 - ci-build

HL7 v2.8.1 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.v281/ and changes regularly. See the Directory of published versions

## CodeSystem: Controlled Substance Schedule (2.8.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/controlledSubstanceSchedule | Version: 1.0.0
Active as of 2026-01-27 | Computable Name: ControlledSubstanceSchedule
Other Identifiers: OID:2.16.840.1.113883.18.304
Copyright/Legal: HL7 Inc., 2026

Code system of concepts specifying the class of the drug or other substance if its usage is controlled by legislation. In the USA, such legislation includes the federal Controlled Substance Act (CSA) or a State Uniform Controlled Substance Act. Other countries should create their own versions of this table. Used in HL7 Version 2.x messaging in the RXE segment. The name of the table is taken from the Pharmacy Law Digest July 1988.

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

- Hl7VScontrolledSubstanceSchedule

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/controlledSubstanceSchedule` defines the following codes:

Code | Display | Definition | versionIntroduced | usage
I | Schedule I | Schedule I | 2.5 | Includes drugs that have a high potential for abuse, no currently accepted medical use in the United States and a lack of accepted safety for use under medical supervision.
II | Schedule II | Schedule II | 2.5 | Includes drugs having currently accepted medical use in the United States and a high abuse potential, with severe psychological or physical dependence liability.
III | Schedule III | Schedule III | 2.5 | Includes drugs having an abuse potential less than that of drugs listed in Schedules I and II. All CS III drugs have a currently accepted medical use in the United States.
IV | Schedule IV | Schedule IV | 2.5 | Includes drugs having a lesser potential for abuse than those listed in Schedule III. CS IV drugs have a currently accepted medical use in the United States.
V | Schedule V | Schedule V | 2.5 | Includes drugs having low abuse potential and limited physical or psychological dependence relative to those listed in IV and have an accepted medical use in the United States.
VI | Schedule VI | Schedule VI | 2.5 | State defined