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LOINC

LOINC Code 66565-3: Did you use one of the following forms of birth control each time you had sexual intercourse in the past 7 days [PhenX]

66565-3 is a LOINC code used to identify Did you use one of the following forms of birth control each time you had sexual intercourse in the past 7 days [PhenX] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Did you use one of the following forms of birth control each time you had sexual intercourse in the past 7D. It is commonly used with the system or sample type ^Patient.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Did you use one of the following forms of birth control each time you had sexual intercourse in the past 7D. It is commonly used with the system or sample type ^Patient.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: TRIAL
  • Method: PhenX

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Did you use one of the following forms of birth control each time you had sexual intercourse in the past 7 days [PhenX]
  • Did you use one of the following forms of birth control each time you had sexual intercourse in the past 7D
  • Birth control methods not found on this list are not considered effective in preventing pregnancies by our study physicians.
  • Birth control in last W; Contraception; Contraceptive Method; Finding; Findings; Last; Ordinal; Ql; Qual; Qualitative; Screen

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Did you use one of the following forms of birth control each time you had sexual intercourse in the past 7 days [PhenX]Birth control in last W PhenXDid you use one of the following forms of birth control each time you had sexual intercourse in the past 7DPHENXFind7D^Patient

Frequently asked questions

Code details

Code66565-3
SystemLOINC
Display nameDid you use one of the following forms of birth control each time you had sexual intercourse in the past 7 days [PhenX]
DescriptionDid you use one of the following forms of birth control each time you had sexual intercourse in the past 7D
Short nameBirth control in last W PhenX
ComponentDid you use one of the following forms of birth control each time you had sexual intercourse in the past 7D
PropertyFind
Timing7D
System (specimen)^Patient
ScaleOrd
MethodPhenX
ClassPHENX
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.38
Last changed2.65

Part names

Did you use one of the following forms of birth control each time you had sexual intercourse in the past 7DFind7D^PatientOrdPhenXDid you use one of the following forms of birth control each time you had sexual intercourse in the past 7 daysFinding7 days

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.