HealthAssure
HealthAssureGood Life
LOINCActive

LOINC Code 66579-4: During the past 30 days, for about how many days did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation [HRQOL]

66579-4 is a LOINC code used to identify During the past 30 days, for about how many days did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation [HRQOL] 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 During the past 30D, for about how many Ds did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation. 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 During the past 30D, for about how many Ds did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation. 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
  • Method: HRQOL

What it does not mean

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

Key facts

  • During the past 30 days, for about how many days did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation [HRQOL]
  • During the past 30D, for about how many Ds did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation
  • Arterial Stenosis; Count/time; Emotional stability; Job; Last; nRate; Number rate; Number Rate = Count/Time; Occupation; PhenX; Poor health prevent activ; QNT; Quan; Quant; Quantitative

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

During the past 30 days, for about how many days did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation [HRQOL]Poor health prevent activ nRate HRQOLDuring the past 30D, for about how many Ds did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreationPHENXNRat30D^Patient

Frequently asked questions

Code details

Code66579-4
SystemLOINC
Display nameDuring the past 30 days, for about how many days did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation [HRQOL]
DescriptionDuring the past 30D, for about how many Ds did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation
Short namePoor health prevent activ nRate HRQOL
ComponentDuring the past 30D, for about how many Ds did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreation
PropertyNRat
Timing30D
System (specimen)^Patient
ScaleQn
MethodHRQOL
ClassPHENX
Example unitsdays/mo
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.38
Last changed2.65

Part names

During the past 30D, for about how many Ds did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreationNRat30D^PatientQnHRQOLDuring the past 30 days, for about how many days did poor physical or mental health keep you from doing your usual activities, such as self-care, work, or recreationNumber Rate30 days

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.