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 77994-2: Date of first report to Centers for Disease Control and Prevention [CDC.PHIN]

Name: LOINC Code 77994-2: Date of first report to Centers for Disease Control and Prevention [CDC.PHIN]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:58.755Z

77994-2 is a LOINC code used to identify Date of first report to Centers for Disease Control and Prevention [CDC.PHIN] 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 Date of first report to Centers for Disease Control and Prevention. It is commonly used with the system or sample type ^Event.

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 Date of first report to Centers for Disease Control and Prevention. It is commonly used with the system or sample type ^Event.

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: CDC.PHIN

What it does not mean

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

Key facts

Date of first report to Centers for Disease Control and Prevention [CDC.PHIN]
Date of first report to Centers for Disease Control and Prevention
Centers for Disease Control and Prevention, Public Health Information Network; Date and time; Date first report to CDC; Dis; Diseases; Dz; Point in time; QNT; Quan; Quant; Quantitative; Random; Survey; SURVEY.CDC; Time stamp; Timestamp

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

Date of first report to Centers for Disease Control and Prevention [CDC.PHIN]Date of first report to Centers for Disease Control and PreventionSURVEY.CDCTmStpPt^EventQn

Frequently asked questions

Code details

Code77994-2

SystemLOINC

Display nameDate of first report to Centers for Disease Control and Prevention [CDC.PHIN]

DescriptionDate of first report to Centers for Disease Control and Prevention

ComponentDate of first report to Centers for Disease Control and Prevention

PropertyTmStp

TimingPt

System (specimen)^Event

ScaleQn

MethodCDC.PHIN

ClassSURVEY.CDC

Example unitsMMDDYY

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.52

Last changed2.52

Part names

Date of first report to Centers for Disease Control and PreventionTmStpPt^EventQnCDC.PHINTime Stamp (Date and Time)Point in time (spot)Centers for Disease Control and Prevention, Public Health Information Network

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.