LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.
Updated Time part to 30D to reflect the exact look-back period stated in the question in order to provide internal consistency to the term [201508 LOINC Clinical Committee decision]; Updated the PhenX ID from "PhenX." to "PX" in Survey Question Source field to align with the variable identifier used in the PhenX Toolkit.
Related Names
30Dcigarette smoking Finding Findings Last Ordinal Ql Qual