HL7® Definition

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OBX: Observation/Result

The OBX segment is used to transmit a single observation or observation fragment. It represents the smallest indivisible unit of a report. The OBX segment can also contain encapsulated data, e.g., a CDA document or a DICOM image.

SEQLENGTHDTOPTRPT / #TBL #NAME
OBX.14SIO1Set ID - OBX
OBX.22IDC1250125Value Type
OBX.3250CER1Observation Identifier
OBX.420STC1Observation Sub-ID
OBX.599999VARIESC*Observation Value
OBX.6250CEO1Units
OBX.760STO1References Range
OBX.85ISO*0078Abnormal Flags
OBX.95NMO1Probability
OBX.102IDO*0080Nature of Abnormal Test
OBX.111IDR10085Observation Result Status
OBX.1226TSO1Effective Date of Reference Range
OBX.1320STO1User Defined Access Checks
OBX.1426TSO1Date/Time of the Observation
OBX.15250CEO1Producer's ID
OBX.16250XCNO*Responsible Observer
OBX.17250CEO*Observation Method
OBX.1822EIO*Equipment Instance Identifier
OBX.1926TSO1Date/Time of the Analysis
OBX.200STO1Reserved for v2.6
OBX.210STO1Reserved for v2.6
OBX.220STO1Reserved for v2.6
OBX.23567XONO1Performing Organization Name
OBX.24631XADO1Performing Organization Address
OBX.253002XCNO1Performing Organization Medical Director
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