What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 91663-5: Social support index [MOS Social Support Survey]

Name: LOINC Code 91663-5: Social support index [MOS Social Support Survey]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:21.442Z

91663-5 is a LOINC code used to identify Social support index [MOS Social Support Survey] 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 Social support index. 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 Social support index. 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: MOS Social Support Survey

What it does not mean

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

Key facts

Social support index [MOS Social Support Survey]

Social support index

Medical Outcomes Study (MOS) Social Support Survey consists of four separate social support subscales and an overall functional social support index (this term), which is calculated based on the subscales and additional item scores by averaging the individual scores for all 19 items. Note that the overall support index calculation does not use the individual subscale scores. Scores can be transformed to a 0-100 scale using the following formula100 X [(observed score - minimum possible score)/(maximum possible score - minimum possible score)]. A higher score for an individual scale or for the overall support index indicates more support is available. [RAND: mos/social-support/scoring]

MOS SSS; Point in time; QNT; Quan; Quant; Quantitative; Random; Scale; Scre; SDOH; SURVEY.MTLHLTH

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

Social support index [MOS Social Support Survey]Social support indexSURVEY.MTLHLTHScorePt^PatientQn

Frequently asked questions

Code details

Code91663-5

SystemLOINC

Display nameSocial support index [MOS Social Support Survey]

DescriptionSocial support index

ComponentSocial support index

PropertyScore

TimingPt

System (specimen)^Patient

ScaleQn

MethodMOS Social Support Survey

ClassSURVEY.MTLHLTH

Example unitsscore

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.66

Last changed2.66

Part names

Social support indexScorePt^PatientQnMOS Social Support SurveyPoint in time (spot)Medical Outcomes Study (MOS) Social Support Survey

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.