# | Name | Location | Type | Details | Index | Description |
---|---|---|---|---|---|---|
.01 | code(+) | 0;1 | NUMERIC | B | The unique LOINC code in numeric form. | |
1 | component | 0;2 | POINTER | 95.31 | C | The name of the component or analyte measured e.g., potassium, hemoglobin, or hepatitis C antigen. |
1.5 | challenge | 0;3 | POINTER | 64.061 | This field contains information necessary to interpret "challenge" (or loading or tolerance) tests. | |
1.6 | adjustment | 0;4 | POINTER | 64.061 | This field contains calculations that adjust or correct some measured value. | |
1.7 | non-patient specimen | 0;5 | POINTER | 64.061 | The second subpart of the system distinguishes observations on the patient (or samples taken from the patient or donor) from observations on non-patient materials that relate to the patient, e.g. a blood product unit (BPU). When the person or super system is not included in a name, it can be assumed to be the patient. | |
2 | property | 0;6 | POINTER | 64.061 | This field contains the property measured- e.g., a mass concentration or enzyme activity. | |
3 | time aspect | 0;7 | POINTER | 64.061 | Point or moment in time vs. time interval, e.g., 24-hour urine. | |
3.1 | time modifier | 0;17 | POINTER | 64.061 | The second and optional subpart of the time component allows an indication of some sub selection or integration of the measures taken over the defined period of time, so 8H^MAX heart rate would be the highest heart rate observed over 8H(Shift), MIN, MAX, FIRST, LAST, MEAN are the other possible values for this subpart. When nothing is stored in this subpart, we assume a mean value over the time period in question. | |
4 | system | 0;8 | POINTER | 64.061 | This field contains the specimen. | |
5 | scale type | 0;9 | POINTER | 64.061 | The field contains the data part of the test name which specifies the scale of the measure, and is a required part. The abbreviation of the type of scale (previously called precision), should be used in the fully specified name. | |
6 | method type | 0;10 | POINTER | 64.2 | The method by which the test was performed. Methods need only be expressed as part of the name when they provide a distinction between tests that measure the same component (analyte) but which have different clinical significance or have different clinical reference ranges. For instance, whole blood glucose tested with a chemstrip might be distinguished in the method field. | |
7 | class | 0;11 | POINTER | 64.061 | An arbitrary classification of the terms for grouping related observations together. Some examples are CHEM for Chemistry, MICRO for Microbiology, and BLDBK for Blood Bank. | |
8 | source | 0;12 | FREE TEXT | Source is a field for internal use of the LOINC committee. | ||
10 | units | 0;14 | POINTER | 64.061 | This field contains the units of measure for the test of this specimen. | |
11 | normal range | 0;13 | FREE TEXT | Normal Range - Example answers from real tests. | ||
13 | molar mass | 0;16 | FREE TEXT | Molecular weights: This field contains the molecular weights of chemical moieties when they are provided to LOINC. This release contains values kindly contributed by IUPAC. | ||
15 | check digit | 0;15 | NUMERIC | Note: the data contained in this field contains some incorrect values due to errors in LOINC released database. When check digit computation errors are discovered - STATUS (#20) field is marked as DEL preventing the code from being assigned. Once a LOINC has be released it never deleted from the database. This field contains the LOINC number modulo 10 check digit. The instruction for calculating a Mod 10 check digit is as follows: (1) Take the odd digit positions counting from the right (2) Multiply by 2 (3) Take the even digits starting from the right (4) Append these to the front of the results of (2) (5) Add the digits of (4) together (6) Find the next highest multiple of 10 (7) Subtract (5) from (6) | ||
20 | status | 4;1 | SET OF CODES | 1:DEL | AD | Deprecated or superseded status indicated by DEL in this field (otherwise blank). Used to mark terms as the database evolves. LOINC codes will never be reused nor will they be removed from the database, they will instead be cross-referenced to superseding terms in the MAP_TO field. |
21 | map to | 4;2 | POINTER | 95.3 | Used when a field has been dropped from the active database (by entering "DEL" in the Status field) because it has been replaced by an updated term. In those cases, Map_To contains the LOINC code of the new term that should be used. | |
22 | date last changed | 4;3 | DATE-TIME | Date last changed, in the format YYYYMMDD. | ||
23 | change type | 4;4 | FREE TEXT | Change Type Code. DEL= Delete; ADD=add, NAM=change to Analyte/ Component (field #2); MAJ=change to name field other than #2 (#3-#7); MIN=change to field other than name. | ||
24 | change reason | 4;5 | FREE TEXT | Reason term was changed. If a term has been changed, the reason for the change is detailed here. | ||
30 | euclides code | 1;1 | FREE TEXT | EUCLIDES analyte code. The Euclides code identifies the analyte (the first subpart of the first part of the name.) | ||
31 | astm code | 1;2 | FREE TEXT | The ASTM codes apply to only a few of the tests (e.g., cell counts, antibiotic sensitivities). These are the codes included in the appendices of HL7 and ASTM E1238-94. | ||
32 | iupac code | 1;3 | FREE TEXT | The IUPAC code identifies the component, kind of property, and system. | ||
33 | snomed code | 1;4 | FREE TEXT | SNOMED Code (future versions). Not currently used. | ||
34 | va code | 1;5 | FREE TEXT | AC | This field contains the VA Unique Identifier (VUID). This number is assigned by the VA Master File Server (MFS). | |
35 | metpath code | 1;6 | FREE TEXT | Metpath Code. Not currently used. | ||
36 | hcfa code | 1;7 | FREE TEXT | HCFA code (future versions). Not currently used. | ||
37 | cdc code | 1;8 | FREE TEXT | Code from the CDC Complexity file which maps laboratory tests to the instruments used to perform them. These codes are at the analyte level, not the test instrument level. | ||
38 | gpi code | 1;9 | FREE TEXT | GPI Code. For drugs, this field contains a map to the Medispan GPI codes, a hierarchical system of classifying pharmaceutical products. | ||
40 | iupac analyte code | 1;11 | FREE TEXT | IUPAC analyte code: This field contains the Chemical Abstract service number or the Enzyme Nomenclature number for the chemical components for chemicals and/or enzymes. These were also contributed by IUPAC. | ||
41 | classtype | 3;1 | SET OF CODES | 1:LABORATORY 2:CLINICAL 3:CLAIMS 4:SURVEYS | This field is used to indicate the source of this code. There are at least four general areas. Laboratory Class, Clinical Class, Claims Attachment and Surveys. The selections are available on the Regenstrief RELMA class restriction window. | |
50 | related names | 50;0 | MULTIPLE | 95.39 | A synonym intended to make it easier to find a given observation by providing other names by which the observation may be known. For a drug level, for example, we include the trade names of that drug under the related names. | |
56 | units required | 0;18 | SET OF CODES | 1:YES 0:NO Y:YES N:NO | This field indicates that units are required when this LOINC code is included in an OBX segment in a HIPPA attachment. | |
60 | answerlist | 2;0 | MULTIPLE | 95.33 | The list of answers for results that are reportable from a multiple choice list (e.g., the answers for the term of DISPOSITION OF BLOOD PACK are GIVEN; PARTIALLY GIVEN;DISCARDED). The field provides examples, not required answer lists. | |
70 | scope | 70;0 | MULTIPLE | 95.32 | ||
80 | fully specified name | 80;1 | FREE TEXT | This field contains the fully specified name of the LOINC code. It has five or six major parts including: the name of the component or analyte measured, the property observed, the timing of the measurement, the type of sample, the scale of measurement, and where relevant, the method of the measurement. The colon character, ":", is part of the name and is used to separate the main parts of the name. | ||
81 | shortname | 81;1 | FREE TEXT | E | This field was introduced in LOINC version 2.07, the field is a concatenation of the fully specified LOINC name. This field maybe used as the test name on reports rather than the fully specified name in FULLY SPECIFIED NAME (#80) field. | |
99 | comments | 99;0 | WORD-PROCESSING | Free-text comments relating to the test result. | ||
99.98 | master entry for vuid(+) | VUID;2 | BOOLEAN | 1:YES 0:NO | This field identifies the Master entry for a VUID associated with a Term/Concept. | |
99.99 | vuid(+) | VUID;1 | FREE TEXT | VHA Unique ID (VUID). A unique meaningless integer assigned to reference terms VHA wide. | ||
99.991 | effective date/time | TERMSTATUS;0 | MULTIPLE | 95.3099 | Describes the pair Status and Effective Date/Time for each reference term. |