LOINCActiveObservation

LOINC Code 56469-0: Cardiac heart disease risk [Ratio]

56469-0 is a LOINC code used to identify Cardiac heart disease risk [Ratio] 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 Cardiac heart disease risk. It is commonly used with the system or sample type Ser/Plas.

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 Cardiac heart disease risk. It is commonly used with the system or sample type Ser/Plas.

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

What it does not mean

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

Key facts

Cardiac heart disease risk [Ratio] in Serum or Plasma
Cardiac heart disease risk
The Estimated CHD risk is based on a calculation that utilizes the Total CHOL/HDL ratio. There are two calculations; one for males and one for females. The calculations are as followsCalculation for males = 1.3137 x (nlog of Total Chol/HDL) - 1.0834 Calculation for females = 2.0762 x (nlog of Total Chol/HDL) - 2.00247
CHD risk; Chemistry; Dis; Diseases; Dz; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Cardiac heart disease risk [Ratio]Cardiac heart disease risk [Ratio] in Serum or PlasmaCHD risk SerPl-RtoCardiac heart disease riskCHEMCardiac heart disease risk, BloodRatio

Frequently asked questions

Code details

Code56469-0
SystemLOINC
Display nameCardiac heart disease risk [Ratio]
DescriptionCardiac heart disease risk
Short nameCHD risk SerPl-Rto
ComponentCardiac heart disease risk
PropertyRatio
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.73

Consumer names

Cardiac heart disease risk, Blood

Part names

Cardiac heart disease riskRatioPtSer/PlasQnPoint in time (spot)Serum or Plasma

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 56469-0 | HealthAssure