NIH Common Data Elements (CDE) Repository

Value	Code Name	Code	Code System
1	Less than 21 days	LA14649-0	LOINC
2	21-25 days	LA14650-8	LOINC
3	26-32 days	LA14651-6	LOINC
4	33-35 days	LA14652-4	LOINC
5	36-90 days	LA14653-2	LOINC
6	More than 90 days	LA14654-0	LOINC
7	Too variable to say	LA14655-7	LOINC
-8	Don't know	LA12688-0	LOINC

Properties:

Key:

Related Names

Value:

Count/time	Dextro	Menstrual cycle typical days
nRate	Number rate	Number Rate = Count/Time
Ordinal	Past	QL
Qual	Qualitative	Rh
Rhesus	Screen

Key:

Related Codes

Value:

Code System	Code	Code Text	Code Version
https://www.phenxtoolkit.org	PX101101050000	PX101101_Menstrual_Cycle_Typical_Days_Average

Key:

Fully-Specified Name

Value:

Component	Property	Time	System	Scale	Method
On average, during the last Y, how many D were there in a typical menstrual cycle, that is, from the beginning of bleeding of one menstrual period to the beginning of bleeding of the next period	NRat	1Y	^Patient	Ord	PhenX

Key:

Basic Attributes

Value:

Class	Type	First Released	Last Updated	Change Reason
PHENX	Clinical	Version 2.36	Version 2.65	Updated Time part to 1Y to reflect the exact look-back period stated in the question in order to provide internal consistency to the term [201508 LOINC Clinical Committee decision]; Updated the PhenX ID from "PhenX." to "PX" in Survey Question Source field to align with the variable identifier used in the PhenX Toolkit.

Key:: Third Party Copyright
Value:: This material includes SNOMED Clinical Terms® (SNOMED CT®) which is used by permission of the International Health Terminology Standards Development Organisation (IHTSDO) under license. All rights reserved. SNOMED CT® was originally created by The College of American Pathologists. "SNOMED" and "SNOMED CT" are registered trademarks of the IHTSDO. This material includes content from the US Edition to SNOMED CT, which is developed and maintained by the U.S. National Library of Medicine and is available to authorized UMLS Metathesaurus Licensees from the UTS Downloads site at https://uts.nlm.nih.gov. Use of SNOMED CT content is subject to the terms and conditions set forth in the SNOMED CT Affiliate License Agreement. It is the responsibility of those implementing this product to ensure they are appropriately licensed and for more information on the license, including how to register as an Affiliate Licensee, please refer to http://www.snomed.org/snomed-ct/get-snomed-ct or info@snomed.org<mailto:info@snomed.org>. This may incur a fee in SNOMED International non-Member countries.

Key:: LOINC Copyright
Value:: This material includes SNOMED Clinical Terms® (SNOMED CT®) which is used by permission of the International Health Terminology Standards Development Organisation (IHTSDO) under license. All rights reserved. SNOMED CT® was originally created by The College of American Pathologists. "SNOMED" and "SNOMED CT" are registered trademarks of the IHTSDO. This material includes content from the US Edition to SNOMED CT, which is developed and maintained by the U.S. National Library of Medicine and is available to authorized UMLS Metathesaurus Licensees from the UTS Downloads site at https://uts.nlm.nih.gov. Use of SNOMED CT content is subject to the terms and conditions set forth in the SNOMED CT Affiliate License Agreement. It is the responsibility of those implementing this product to ensure they are appropriately licensed and for more information on the license, including how to register as an Affiliate Licensee, please refer to http://www.snomed.org/snomed-ct/get-snomed-ct or info@snomed.org<mailto:info@snomed.org>. This may incur a fee in SNOMED International non-Member countries.