Name Steward Organization Suggested Domain Suggested Domain Description Cde Group Classification
Comorbidity or Underlying Condition Occurrence Indicator Project 5 (COVID-19) Disease characterization
Including Alzheimer's Disease (AD)/AD-Related Dementias (ADRD) diagnosis and multiple chronic conditions (MCCs)
NIH CDEs
  • Project 5 (COVID-19)
    • Tier 1

# Datatype
Value List

# Permissible value Value meaning code Value meaning definition Code system name Concept Concept source
N/A or not reported N/A or not reported Determination of a value is not relevant in the current context.:An article used to connect words, phrases, or clauses representing alternatives; used to connect alternative terms for the same thing; used in correlation; used to correct or rephrase what was previously said; otherwise.:Not provided or available. C48660:C37998:C43234(Primary) LOINC C48660:C37998:C43234(Primary) NCI Thesaurus
No LA32-8 The non-affirmative response to a question. C49487 LOINC C49487 NCI Thesaurus
Unknown LA4489-6 Not known, observed, recorded; or reported as unknown by the data contributor. C17998 LOINC C17998 NCI Thesaurus
Yes LA33-6 The affirmative response to a question. C49488 LOINC C49488 NCI Thesaurus

# Name Origin Origin Concept type
Occurrence Indicator NCI Thesaurus C127786 data element concept
Comorbid Condition NCI Thesaurus C161320 data element concept

# Definition Sources
An indication of whether the comorbid condition occurred. Project 5

# Designation Tags
For each item: Preferred Question Text
Comorbidity or Underlying Condition Occurrence Indicator

# Identifier Origin Version
kSjnTjeV_N NLM CDEs 12-02-2025-download