LOINCActive

LOINC Code 10163-4: History of pregnancies

10163-4 is a LOINC code used to identify History of pregnancies 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 History of pregnancies. It is commonly used with the system or sample type Reproductive system.

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 History of pregnancies. It is commonly used with the system or sample type Reproductive system.

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: ACTIVE

What it does not mean

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

Key facts

  • History of pregnancies
  • Gestation; Gestations; Gravida; H/O; H+P; H+P.HX; History; Hx; Nominal; P prime; Point in time; Pregnancies Hx; Pregnancy; Random

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

History of pregnanciesPregnancies HxH&P.HXHxPtReproductive systemNom

Frequently asked questions

Code details

Code10163-4
SystemLOINC
Display nameHistory of pregnancies
Short namePregnancies Hx
ComponentHistory of pregnancies
PropertyHx
TimingPt
System (specimen)Reproductive system
ScaleNom
ClassH&P.HX
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0i
Last changed2.56

Part names

History of pregnanciesHxPtReproductive systemNomHistoryPoint in time (spot)

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.

LOINC Code 10163-4 | HealthAssure