Name Steward Organization Suggested Domain Suggested Domain Description Cde Group Classification
Menstrual cycle typical days PhenX LOINC Demographic information
Patient and caregiver demographic information
NIH CDEs
  • PhenX
    • Miscellaneous

# Datatype
Value List

# Permissible value Value meaning name Value meaning code Code system name
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

# Designation Tags
On average, during the last year, how many day 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 [PhenX] Long Common Name
Menstrual cycle typical days PhenX Short Name
On average, during the last year, how many days 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? Question Text

# Identifier Origin Version
64700-8 LOINC 2.69
7J6eeO9j3je NLM CDEs 12-02-2025-download