CDC MME CQL Calculator
3.0.0 - release

This page is part of the CDC Opioid MME Calculator (v3.0.0: Release) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

CodeSystem: CDC MME Clinical Conversion Factors

Summary

Defining URL:http://fhir.org/guides/cdc/opioid-mme-r4/CodeSystem/CDCMMEClinicalConversionFactors
Version:3.0.0
Name:CDCMMEClinicalConversionFactors
Title:CDC MME Clinical Conversion Factors
Status:Active as of 11/25/21, 3:13 PM
Definition:

This Code System Supplement defines clinical conversion factors for calculating Morphine Milligram Equivalence (MME), as described in the CDC Opioid Prescribing Guideline. The supplement defines conversions factors for ingredients in one of 3 ways: 1, as a direct conversion factor for the ingredient, 2, as a dose-form-specific conversion factor for the ingredient, and 3, as a dose-quantity-ranged conversion factor for the ingredient. See the descriptions for each property for information on how the values are represented for the different conversion factors. For a given ingredient, only one of 'dose-form' or 'dose-range' will be present, with or without an ingredient-specific conversion factor. The properties together will enable a unique conversion factor to be determined if the input is within the expected range. If the input is outside the expected range, and there is no ingredient-specific conversion-factor specified, implementations should indicate a conversion factor could not be determined from the supplied information. All conversion factors supplied in this supplement are in 'mg/d'.

Publisher:Alphora
Copyright:

Copyright 2019+ Centers for Disease Control and Prevention (CDC)

Content:Supplement: This code system resource is a supplement to http://www.nlm.nih.gov/research/umls/rxnorm
Source Resource:XML / JSON / Turtle

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

This CodeSystem is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

Properties

CodeTypeDescription
conversion-factordecimalDefines the conversion factor for a specific ingredient, when the conversion factor is the same for all dose forms and dose amounts for the ingredient. The value of this property will be the decimal representation of the conversion factor.
dose-form-conversion-factorstringDefines the conversion factor for an ingredient when the conversion factor varies by the dose form of the medication. The value of this property will be a string of the form <dose-form-code>:<conversion-factor>[@<doses-per-day>], e.g. 970789:130, where '970789' is the RxNorm dose form code, and '130' is the decimal representation of the conversion factor. An example of a per-day conversion factor is fentanyl, 316987:7200@0.33333333, where 316987 is RxNorm dose form code, 7200 is the conversion factor, and 0.33333333 is the dosesPerDay, expressed as a decimal with a maximum of 8 digits after the decimal.
dose-range-conversion-factorstringDefines the conversion factor for an ingredient when the conversion factor varies by the overall dose of the medication. The value of this property will be a string of the form <low-value>-<high-value>:<conversion-factor>, e.g. 1-20:4. Note that the low-value or high-value may be a wildcard '*' to indicate the range continues (e.g. '61-*:12' indicates the range is 61 or greater).

CodeDisplayconversion-factordose-form-conversion-factordose-range-conversion-factor
2670 Codeine0.15
4337 Fentanyl316987:7200@0.33333333
5489 Hydrocodone1
3423 Hydromorphone4
6813 Methadone1-20:4, 21-40:8, 41-60:10, 61-*:12
7052 Morphine1
7804 Oxycodone1.5
7814 Oxymorphone3