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2024 CMS314v1: Viral Load result as a Logarithm

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      ​Thank you for your inquiry regarding CMS314v1: HIV Viral Suppression. Viral load results that are captured as log values must be converted to numeric values (expressed as copies/mL). Please see the content in the Guidance header field: “For viral loads at or above the lower limit of detection, the viral load should be captured as a numeric value (expressed as the number of copies/mL).”
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      ​Thank you for your inquiry regarding CMS314v1: HIV Viral Suppression. Viral load results that are captured as log values must be converted to numeric values (expressed as copies/mL). Please see the content in the Guidance header field: “For viral loads at or above the lower limit of detection, the viral load should be captured as a numeric value (expressed as the number of copies/mL).”
    • CMS0314v1

      Measure Specification: https://ecqi.healthit.gov/sites/default/files/ecqm/measures/CMS314v1.html

      Value set Name: HIV Viral Load

      In the value set for "HIV Viral Load" with code system as LOINC, there are several LOINCs that describe the log# copies/mL. In the measure specifications, the numerator requires the unit of measure to be copies/mL. This causes an issue where the log value for a result is less than 200, but the actual value in copies/mL is greater than 200 (e.g., patient has 1000 copies/mL, the log value would be 3). In such cases where the log value result has been captured for the patient, should the log value result be converted to copies/mL in order to determine if the patient meets the numerator?

      Below are the LOINC codes in question provided in the value set document for CMS314v1

      Code Description Code System
      29539-4 HIV 1 RNA Log #/volume (viral load) in Plasma by Probe with signal amplification LOINC
      29541-0 HIV 1 RNA Log #/volume (viral load) in Serum or Plasma by NAA with probe detection LOINC
      41514-1 HIV 1 RNA Log #/volume (viral load) in Serum or Plasma by Probe with amplification detection limit = 2.6 log copies/mL LOINC
      41516-6 HIV 1 RNA Log #/volume (viral load) in Serum or Plasma by Probe with amplification detection limit = 1.9 log copies/mL LOINC
      48510-2 HIV 1 RNA Log #/volume (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 1.7 log copies/mL LOINC
      48552-4 HIV 1 RNA Log #/volume (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 2.6 log copies/mL LOINC
      51780-5 HIV 1 RNA Log #/volume (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 0.5 log copies/mL LOINC

            edave Mathematica EC eCQM Team
            saileshdixit Sailesh
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