HIV Screening Clinical Guidelines Implementation Guide
0.1.0 - CI Build Unknown region code '840'

HIV Screening Clinical Guidelines Implementation Guide, published by National Association of Community Health Centers, Inc. (NACHC). This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/cqframework/hiv-cds/ and changes regularly. See the Directory of published versions

ValueSet: HIV Test Codes Grouper

Official URL: http://fhir.org/guides/nachc/hiv-cds/ValueSet/nachc-a2-de1-codes-grouper Version: 0.1.0
Draft as of 2022-01-17 Computable Name: HIVTestCodesGrouper

Copyright/Legal: Copyright National Association of Community Health Centers, Inc. (NACHC)

Group Valueset with codes representing possible values for the HIV Test Codes Grouper element

References

Logical Definition (CLD)

Generated Narrative: ValueSet nachc-a2-de1-codes-grouper

This value set includes codes based on the following rules:

 

Expansion

Generated Narrative: ValueSet nachc-a2-de1-codes-grouper

This value set expansion contains 213 concepts.

CodeSystemDisplay
  49965-7http://loinc.orgDeprecated HIV 1 Ab/HIV 2 Ab Ab [Ratio] in Serum by Immunoblot (IB)
  51866-2http://loinc.orgDeprecated HIV 1 Ab+Ag [Presence] in Serum
  44607-0http://loinc.orgHIV 1 [Interpretation] in Serum or Plasma by Immunoassay
  49483-1http://loinc.orgHIV 1 [Interpretation] in Serum or Plasma by Immunoassay Narrative
  29327-4http://loinc.orgHIV 1 Ab [Presence] in Body fluid
  34591-8http://loinc.orgHIV 1 Ab [Presence] in Body fluid by Immunoassay
  34592-6http://loinc.orgHIV 1 Ab [Presence] in Body fluid by Immunoblot
  41145-4http://loinc.orgHIV 1 Ab [Presence] in Capillary blood
  33866-5http://loinc.orgHIV 1 Ab [Presence] in Capillary blood by Immunoassay
  16974-8http://loinc.orgHIV 1 Ab [Presence] in Cerebral spinal fluid
  57974-8http://loinc.orgHIV 1 Ab [Presence] in Cerebral spinal fluid by Immunoblot
  42627-0http://loinc.orgHIV 1 Ab [Presence] in Cerebral spinal fluid by Immunofluorescence
  41144-7http://loinc.orgHIV 1 Ab [Presence] in Saliva (oral fluid)
  35437-3http://loinc.orgHIV 1 Ab [Presence] in Saliva (oral fluid) by Immunoassay
  35439-9http://loinc.orgHIV 1 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  2197878http://loinc.orgHIV 1 Ab [Presence] in Serum
  14092-1http://loinc.orgHIV 1 Ab [Presence] in Serum by Immunofluorescence
  21007-0http://loinc.orgHIV 1 Ab [Presence] in Serum from Donor
  29893-5http://loinc.orgHIV 1 Ab [Presence] in Serum or Plasma by Immunoassay
  1213154http://loinc.orgHIV 1 Ab [Presence] in Serum or Plasma by Immunoblot
  86233-4http://loinc.orgHIV 1 Ab [Presence] in Serum, Plasma or Blood by Immunoblot
  85686-4http://loinc.orgHIV 1 Ab [Presence] in Serum, Plasma or Blood by Immunofluorescence
  68961-2http://loinc.orgHIV 1 Ab [Presence] in Serum, Plasma or Blood by Rapid immunoassay
  53379-4http://loinc.orgHIV 1 Ab [Presence] in Unspecified specimen
  89374-3http://loinc.orgHIV 1 Ab [Presence] in Unspecified specimen by Immunoassay
  49905-3http://loinc.orgHIV 1 Ab [Presence] in Unspecified specimen by Rapid immunoassay
  32571-2http://loinc.orgHIV 1 Ab [Presence] in Urine by Immunoblot
  41143-9http://loinc.orgHIV 1 Ab [Units/volume] in Saliva (oral fluid)
  35438-1http://loinc.orgHIV 1 Ab [Units/volume] in Saliva (oral fluid) by Immunoassay
  22356-0http://loinc.orgHIV 1 Ab [Units/volume] in Serum
  43599-0http://loinc.orgHIV 1 Ab [Units/volume] in Serum by Immunofluorescence
  1212851http://loinc.orgHIV 1 Ab [Units/volume] in Serum or Plasma by Immunoassay
  13499-9http://loinc.orgHIV 1 Ab band pattern [Interpretation] in Serum by Immunoblot
  16977-1http://loinc.orgHIV 1 Ag [Presence] in Cerebral spinal fluid
  24012-7http://loinc.orgHIV 1 Ag [Presence] in Serum
  44531-2http://loinc.orgHIV 1 Ag [Presence] in Serum from Donor
  1213458http://loinc.orgHIV 1 Ag [Presence] in Serum or Plasma by Immunoassay
  16976-3http://loinc.orgHIV 1 Ag [Units/volume] in Serum
  69668-2http://loinc.orgHIV 1 and 2 Ab [Identifier] in Serum or Plasma by Rapid immunoassay
  80203-3http://loinc.orgHIV 1 and 2 Ab [Identifier] in Serum, Plasma or Blood by Rapid immunoassay
  42768-2http://loinc.orgHIV 1 and 2 Ab [Interpretation] in Serum Narrative
  85037-0http://loinc.orgHIV 1 and 2 Ab and HIV 1 p24 Ag panel - Serum or Plasma by Immunoassay
  43185-8http://loinc.orgHIV 1 and 2 Ab band pattern [Interpretation] in Serum by Immunoblot
  89365-1http://loinc.orgHIV 1 and 2 Ab panel - Serum, Plasma or Blood by Rapid immunoassay
  77685-6http://loinc.orgHIV 1 and 2 IgG Ab [Identifier] in Serum or Plasma by Immunoblot
  86657-4http://loinc.orgHIV 1 and 2 tests - FPAR 2.0 set
  75622-1http://loinc.orgHIV 1 and 2 tests - Meaningful Use set
  12893-4http://loinc.orgHIV 1 gp105 Ab [Presence] in Serum by Immunoblot
  35441-5http://loinc.orgHIV 1 gp120 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  44532-0http://loinc.orgHIV 1 gp120 Ab [Presence] in Serum
  9661-0http://loinc.orgHIV 1 gp120 Ab [Presence] in Serum by Immunoblot
  43013-2http://loinc.orgHIV 1 gp120+gp160 Ab [Presence] in Serum
  14126-7http://loinc.orgHIV 1 gp120+gp160 Ab [Presence] in Serum by Immunoblot
  40439-2http://loinc.orgHIV 1 gp120+gp160 Ab [Presence] in Serum or Plasma by Immunoassay
  35440-7http://loinc.orgHIV 1 gp160 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  2834315http://loinc.orgHIV 1 gp160 Ab [Presence] in Serum by Immunoblot
  12870-2http://loinc.orgHIV 1 gp34 Ab [Presence] in Serum by Immunoblot
  35452-2http://loinc.orgHIV 1 gp40 Ab [Presence] in Serum by Immunoblot
  35446-4http://loinc.orgHIV 1 gp41 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  43012-4http://loinc.orgHIV 1 gp41 Ab [Presence] in Serum
  2835227http://loinc.orgHIV 1 gp41 Ab [Presence] in Serum by Immunoblot
  40438-4http://loinc.orgHIV 1 gp41 Ab [Presence] in Serum or Plasma by Immunoassay
  19110-6http://loinc.orgHIV 1 gp41+gp43 Ab [Presence] in Serum by Immunoblot
  31430-2http://loinc.orgHIV 1 IgG Ab [Presence] in Cerebral spinal fluid
  28004-0http://loinc.orgHIV 1 IgG Ab [Presence] in Cerebral spinal fluid by Immunoblot
  16975-5http://loinc.orgHIV 1 IgG Ab [Presence] in Serum
  40732-0http://loinc.orgHIV 1 IgG Ab [Presence] in Serum by Immunoblot
  28052-9http://loinc.orgHIV 1 IgG band pattern [Interpretation] in Cerebral spinal fluid by Immunoblot
  12872-8http://loinc.orgHIV 1 p15 Ab [Presence] in Serum by Immunoblot
  16132-3http://loinc.orgHIV 1 p15+p18 Ab [Presence] in Serum by Immunoblot
  35449-8http://loinc.orgHIV 1 p17 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  2835531http://loinc.orgHIV 1 p17 Ab [Presence] in Serum by Immunoblot
  32842-7http://loinc.orgHIV 1 p17+p18 Ab [Presence] in Serum
  32827-8http://loinc.orgHIV 1 p17+p18 Ab [Presence] in Serum by Immunoblot
  35450-6http://loinc.orgHIV 1 p18 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  12859-5http://loinc.orgHIV 1 p18 Ab [Presence] in Serum by Immunoblot
  12855-3http://loinc.orgHIV 1 p23 Ab [Presence] in Serum by Immunoblot
  35448-0http://loinc.orgHIV 1 p24 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  43011-6http://loinc.orgHIV 1 p24 Ab [Presence] in Serum
  2835836http://loinc.orgHIV 1 p24 Ab [Presence] in Serum by Immunoblot
  40437-6http://loinc.orgHIV 1 p24 Ab [Presence] in Serum or Plasma by Immunoassay
  21331-4http://loinc.orgHIV 1 p24 Ab [Titer] in Serum by Immunoblot
  16978-9http://loinc.orgHIV 1 p24 Ab [Units/volume] in Serum
  42339-2http://loinc.orgHIV 1 p24 Ag [Mass/volume] in Serum or Plasma by Immunoassay
  49718-0http://loinc.orgHIV 1 p24 Ag [Presence] in Cerebral spinal fluid
  9821-0http://loinc.orgHIV 1 p24 Ag [Presence] in Serum
  18396-2http://loinc.orgHIV 1 p24 Ag [Presence] in Serum or Plasma by Immunoassay
  33660-2http://loinc.orgHIV 1 p24 Ag [Presence] in Serum or Plasma by Neutralization test
  44872-0http://loinc.orgHIV 1 p24 Ag [Presence] in Serum or Plasma from Donor by Immunoassay
  16979-7http://loinc.orgHIV 1 p24 Ag [Units/volume] in Cerebral spinal fluid
  2836111http://loinc.orgHIV 1 p24 Ag [Units/volume] in Serum
  53601-1http://loinc.orgHIV 1 p24 Ag [Units/volume] in Serum or Plasma by Immunoassay
  12871-0http://loinc.orgHIV 1 p26 Ab [Presence] in Serum by Immunoblot
  12857-9http://loinc.orgHIV 1 p28 Ab [Presence] in Serum by Immunoblot
  35447-2http://loinc.orgHIV 1 p31 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  2836719http://loinc.orgHIV 1 p31 Ab [Presence] in Serum by Immunoblot
  35564-4http://loinc.orgHIV 1 p31+p32 Ab [Presence] in Serum by Immunoblot
  12858-7http://loinc.orgHIV 1 p32 Ab [Presence] in Serum by Immunoblot
  35565-1http://loinc.orgHIV 1 p40 Ab [Presence] in Serum by Immunoblot
  31072-2http://loinc.orgHIV 1 p41 Ab [Presence] in Serum by Immunoblot
  21332-2http://loinc.orgHIV 1 p41 Ab [Titer] in Serum by Immunoblot
  35445-6http://loinc.orgHIV 1 p51 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  2837022http://loinc.orgHIV 1 p51 Ab [Presence] in Serum by Immunoblot
  12876-9http://loinc.orgHIV 1 p53 Ab [Presence] in Serum by Immunoblot
  35444-9http://loinc.orgHIV 1 p55 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  2837327http://loinc.orgHIV 1 p55 Ab [Presence] in Serum by Immunoblot
  12895-9http://loinc.orgHIV 1 p58 Ab [Presence] in Serum by Immunoblot
  12875-1http://loinc.orgHIV 1 p64 Ab [Presence] in Serum by Immunoblot
  35443-1http://loinc.orgHIV 1 p65 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  12856-1http://loinc.orgHIV 1 p65 Ab [Presence] in Serum by Immunoblot
  33508-3http://loinc.orgHIV 1 p65+p66 Ab [Presence] in Serum by Immunoblot
  35442-3http://loinc.orgHIV 1 p66 Ab [Presence] in Saliva (oral fluid) by Immunoblot
  2837631http://loinc.orgHIV 1 p66 Ab [Presence] in Serum by Immunoblot
  12894-2http://loinc.orgHIV 1 p68 Ab [Presence] in Serum by Immunoblot
  32602-5http://loinc.orgHIV 1+2 Ab [Presence] in Cerebral spinal fluid
  2198182http://loinc.orgHIV 1+2 Ab [Presence] in Serum
  44873-8http://loinc.orgHIV 1+2 Ab [Presence] in Serum by Immunoblot
  44533-8http://loinc.orgHIV 1+2 Ab [Presence] in Serum from Donor
  31201-7http://loinc.orgHIV 1+2 Ab [Presence] in Serum or Plasma by Immunoassay
  80387-4http://loinc.orgHIV 1+2 Ab [Presence] in Serum, Plasma or Blood by Rapid immunoassay
  43010-8http://loinc.orgHIV 1+2 Ab [Presence] in Unspecified specimen
  42600-7http://loinc.orgHIV 1+2 Ab [Presence] in Unspecified specimen by Immunoassay
  49580-4http://loinc.orgHIV 1+2 Ab [Presence] in Unspecified specimen by Rapid immunoassay
  22357-8http://loinc.orgHIV 1+2 Ab [Units/volume] in Serum
  1213762http://loinc.orgHIV 1+2 Ab [Units/volume] in Serum or Plasma by Immunoassay
  75666-8http://loinc.orgHIV 1+2 Ab and HIV1 p24 Ag [Identifier] in Serum, Plasma or Blood by Rapid immunoassay
  83101-6http://loinc.orgHIV 1+2 Ab and HIV1 p24 Ag panel - Serum or Plasma by Immunoassay
  56888-1http://loinc.orgHIV 1+2 Ab+HIV1 p24 Ag [Presence] in Serum or Plasma by Immunoassay
  58900-2http://loinc.orgHIV 1+2 Ab+HIV1 p24 Ag [Units/volume] in Serum or Plasma by Immunoassay
  73906-0http://loinc.orgHIV 1+2 IgG Ab [Presence] in Blood by Rapid immunoassay
  54086-4http://loinc.orgHIV 1+2 IgG Ab [Presence] in DBS
  43009-0http://loinc.orgHIV 1+2 IgG Ab [Presence] in Serum
  40733-8http://loinc.orgHIV 1+2 IgG Ab [Presence] in Serum or Plasma by Immunoassay
  73905-2http://loinc.orgHIV 1+2 IgG Ab [Presence] in Serum or Plasma by Rapid immunoassay
  43008-2http://loinc.orgHIV 1+2 IgM Ab [Units/volume] in Serum
  41290-8http://loinc.orgHIV 1+2 IgM Ab [Units/volume] in Serum or Plasma by Immunoassay
  57975-5http://loinc.orgHIV 1+O+2 Ab [Presence] in Body fluid
  48345-3http://loinc.orgHIV 1+O+2 Ab [Presence] in Serum or Plasma
  48346-1http://loinc.orgHIV 1+O+2 Ab [Units/volume] in Serum or Plasma
  47029-4http://loinc.orgHIV 2 Ab [Presence] in Cerebral spinal fluid by Immunoblot
  2198486http://loinc.orgHIV 2 Ab [Presence] in Serum
  1214646http://loinc.orgHIV 2 Ab [Presence] in Serum by Immunoblot
  30361-0http://loinc.orgHIV 2 Ab [Presence] in Serum or Plasma by Immunoassay
  81641-3http://loinc.orgHIV 2 Ab [Presence] in Serum, Plasma or Blood by Rapid immunoassay
  22358-6http://loinc.orgHIV 2 Ab [Units/volume] in Serum
  1214068http://loinc.orgHIV 2 Ab [Units/volume] in Serum or Plasma by Immunoassay
  31073-0http://loinc.orgHIV 2 Ab band pattern [Interpretation] in Serum by Immunoblot
  51786-2http://loinc.orgHIV 2 Ab Signal/Cutoff in Serum or Plasma by Immunoassay
  21334-8http://loinc.orgHIV 2 gp105 Ab [Presence] in Serum by Immunoblot
  21335-5http://loinc.orgHIV 2 gp120 Ab [Presence] in Serum by Immunoblot
  10901-7http://loinc.orgHIV 2 gp125 Ab [Presence] in Serum by Immunoblot
  57976-3http://loinc.orgHIV 2 gp140 Ab [Presence] in Serum by Immunoblot
  21336-3http://loinc.orgHIV 2 gp15 Ab [Presence] in Serum by Immunoblot
  21337-1http://loinc.orgHIV 2 gp34 Ab [Presence] in Serum by Immunoblot
  10902-5http://loinc.orgHIV 2 gp36 Ab [Presence] in Serum by Immunoblot
  11078-3http://loinc.orgHIV 2 gp80 Ab [Presence] in Serum by Immunoblot
  33807-9http://loinc.orgHIV 2 IgG Ab [Presence] in Serum
  33806-1http://loinc.orgHIV 2 IgG Ab [Presence] in Serum by Immunoblot
  62456-9http://loinc.orgHIV 2 p15 Ab [Presence] in Serum by Immunoblot
  57977-1http://loinc.orgHIV 2 p16 Ab [Presence] in Serum by Immunoblot
  11079-1http://loinc.orgHIV 2 p26 Ab [Presence] in Serum by Immunoblot
  21338-9http://loinc.orgHIV 2 p31 Ab [Presence] in Serum by Immunoblot
  45212-8http://loinc.orgHIV 2 p31+p34 Ab [Presence] in Serum by Immunoblot
  57978-9http://loinc.orgHIV 2 p34 Ab [Presence] in Serum by Immunoblot
  13920-4http://loinc.orgHIV 2 p41 Ab [Presence] in Serum by Immunoblot
  11080-9http://loinc.orgHIV 2 p53 Ab [Presence] in Serum by Immunoblot
  21339-7http://loinc.orgHIV 2 p55 Ab [Presence] in Serum by Immunoblot
  11081-7http://loinc.orgHIV 2 p56 Ab [Presence] in Serum by Immunoblot
  21340-5http://loinc.orgHIV 2 p58 Ab [Presence] in Serum by Immunoblot
  11082-5http://loinc.orgHIV 2 p68 Ab [Presence] in Serum by Immunoblot
  30245-5http://loinc.orgDeprecated HIV 1 DNA [Presence] in Serum or Plasma by Probe and target amplification method
  44871-2http://loinc.orgHIV 1 proviral DNA [Presence] in Blood by NAA with probe detection
  2899083http://loinc.orgHIV 1 proviral DNA [Presence] in Blood by Probe with amplification
  48023-6http://loinc.orgHIV 1 proviral DNA [Presence] in Serum or Plasma by NAA with probe detection
  41498-7http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Cerebral spinal fluid by NAA with probe detection
  70241-5http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Plasma by Probe and target amplification method detection limit = 20 copies/mL
  59419-2http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Plasma by Probe with signal amplification
  20447-9http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Serum or Plasma by NAA with probe detection
  21008-8http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe
  48551-6http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 400 copies/mL
  48511-0http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 50 copies/mL
  41513-3http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe with amplification detection limit = 400 copies/mL
  41515-8http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Serum or Plasma by Probe with amplification detection limit = 75 copies/mL
  25836-8http://loinc.orgHIV 1 RNA [#/volume] (viral load) in Unspecified specimen by NAA with probe detection
  21333-0http://loinc.orgHIV 1 RNA [#/volume] in Serum
  24013-5http://loinc.orgHIV 1 RNA [Interpretation] in Serum
  41497-9http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Cerebral spinal fluid by NAA with probe detection
  29539-4http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Plasma by Probe with signal amplification
  29541-0http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by NAA with probe detection
  51780-5http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 0.5 log copies/mL
  48510-2http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 1.7 log copies/mL
  48552-4http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe and target amplification method detection limit = 2.6 log copies/mL
  41516-6http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe with amplification detection limit = 1.9 log copies/mL
  41514-1http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Serum or Plasma by Probe with amplification detection limit = 2.6 log copies/mL
  49890-7http://loinc.orgHIV 1 RNA [Log #/volume] (viral load) in Unspecified specimen by NAA with probe detection
  1138706http://loinc.orgHIV 1 RNA [Presence] in Blood by NAA with probe detection
  42917-5http://loinc.orgHIV 1 RNA [Presence] in Cerebral spinal fluid by NAA with probe detection
  25835-0http://loinc.orgHIV 1 RNA [Presence] in Serum or Plasma by NAA with probe detection
  47359-5http://loinc.orgHIV 1 RNA [Presence] in Serum or Plasma from Donor by Probe with amplification
  1139009http://loinc.orgHIV 1 RNA [Presence] in Unspecified specimen by NAA with probe detection
  23876-6http://loinc.orgHIV 1 RNA [Units/volume] (viral load) in Plasma by Probe with signal amplification
  62469-2http://loinc.orgHIV 1 RNA [Units/volume] (viral load) in Serum or Plasma by NAA with probe detection
  10351-5http://loinc.orgHIV 1 RNA [Units/volume] (viral load) in Serum or Plasma by Probe with amplification
  50624-6http://loinc.orgHIV 1 RNA panel (viral load) in Cerebral spinal fluid by NAA with probe detection
  53825-6http://loinc.orgHIV 1+Hepatitis C virus RNA [Presence] in Serum or Plasma by NAA with probe detection
  38998-1http://loinc.orgHIV 1+Hepatitis C virus RNA [Presence] in Serum or Plasma from Blood product unit by NAA with probe detection
  59052-1http://loinc.orgHIV 1+Hepatitis C virus RNA+Hepatitis B virus DNA [Presence] in Serum or Plasma by NAA with probe detection
  25841-8http://loinc.orgHIV 2 proviral DNA [Presence] in Blood by NAA with probe detection
  34699-9http://loinc.orgHIV 2 proviral DNA [Presence] in Serum or Plasma by NAA with probe detection
  25842-6http://loinc.orgHIV 2 proviral DNA [Presence] in Unspecified specimen by NAA with probe detection
  69353-1http://loinc.orgHIV 2 RNA [Presence] in Serum or Plasma by NAA with probe detection
  69354-9http://loinc.orgHIV 2 RNA [Units/volume] (viral load) in Serum or Plasma by NAA with probe detection
  2898779http://loinc.orgHIV proviral DNA [Presence] in Blood by Probe with amplification

Explanation of the columns that may appear on this page:

Level A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
System The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance)
Display The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition An explanation of the meaning of the concept
Comments Additional notes about how to use the code