LOINCObservation

LOINC Code 17643-8: S. pneumoniae 9 Ab IA Ql (S)

17643-8 is a LOINC code used to identify S. pneumoniae 9 Ab IA Ql (S) 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 Streptococcus pneumoniae 9 Ab. It is commonly used with the system or sample type Ser.

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 Streptococcus pneumoniae 9 Ab. It is commonly used with the system or sample type Ser.

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: DEPRECATED
  • Order vs observation: Observation
  • Method: IA

What it does not mean

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

Key facts

  • Deprecated Streptococcus pneumoniae 9 Ab [Presence] in Serum by Immunoassay
  • Streptococcus pneumoniae 9 Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; ID; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Ordinal; Pneu; pneum; Pneumo; Pneumococ; Pneumococcal; Pneumococcal pneumonia; Pneumococcus; Pneumon; Pneumonia; Point in time; PR; QL; Qual; Qualitative; Random; S pneum9; S pneumo; S pneumoniae; Screen; Serum; Spn; SR; Strep; Strept; Streptococcus pneumoniae 9n; SUDS

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

S. pneumoniae 9 Ab IA Ql (S)Deprecated Streptococcus pneumoniae 9 Ab [Presence] in Serum by ImmunoassayDeprecated S pneum9 Ab Ser Ql IAStreptococcus pneumoniae 9 AbMICROStreptococcus pneumoniae 9 antibody, BloodPrThr

Frequently asked questions

Code details

Code17643-8
SystemLOINC
Display nameS. pneumoniae 9 Ab IA Ql (S)
DescriptionStreptococcus pneumoniae 9 Ab
Short nameDeprecated S pneum9 Ab Ser Ql IA
ComponentStreptococcus pneumoniae 9 Ab
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodIA
ClassMICRO
StatusDEPRECATED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.66

Consumer names

Streptococcus pneumoniae 9 antibody, Blood

Part names

Streptococcus pneumoniae 9 AbPrThrPtSerOrdIAPresence or ThresholdPoint in time (spot)SerumImmunoassay

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 17643-8 | HealthAssure