LOINCActiveObservation

LOINC Code 11637-6: [#] Births.preterm

11637-6 is a LOINC code used to identify [#] Births.preterm 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 Births.preterm. 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 Births.preterm. 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: ACTIVE
  • Order vs observation: Observation
  • Method: Reported

What it does not mean

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

Key facts

[#] Births.preterm
Births.preterm
Total number of children whose birth occurred through the end of the last day of the 37th week (259th day) following onset of the last menstrual period. [SeeReference and Comments for ABORTIONS:NUM:PT:^PATIENT:QN:REPORTED].
Cnt; Count; Gyn; Gynecology; Number; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; Premature Births; QNT; Quan; Quant; Quantitative; 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

[#] Births.pretermBirths.pretermOB.USNumPt^PatientQn

Frequently asked questions

Code details

Code11637-6
SystemLOINC
Display name[#] Births.preterm
DescriptionBirths.preterm
Short nameBirths.preterm
ComponentBirths.preterm
PropertyNum
TimingPt
System (specimen)^Patient
ScaleQn
MethodReported
ClassOB.US
Example units#
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.48

Part names

Births.pretermNumPt^PatientQnReportedNumber (count)Point 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 11637-6 | HealthAssure