LOINC Code 42029-9: Date of conclusive diagnosis Cancer
42029-9 is a LOINC code used to identify Date of conclusive diagnosis Cancer in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Date of conclusive diagnosis. It is commonly used with the system or sample type Cancer.XXX.
What is this code?
LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Date of conclusive diagnosis. It is commonly used with the system or sample type Cancer.XXX.
When is it used?
- Used in lab systems, EHRs, and clinical data exchange.
- May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
- Status: ACTIVE
What it does not mean
- The code identifies the observation or test, not the actual result.
Key facts
- Date of conclusive diagnosis Cancer
- Date of conclusive diagnosis
- Documents the date when a conclusive cancer diagnosis (definite statement of malignancy) is made following an initial diagnosis that was based only on ambiguous terminology. The date of the conclusive diagnosis must be greater than two months following the initial (ambiguous terminology only) diagnosis. See page 81 for date format. If the date of conclusive diagnosis is within two months following the initial (ambiguous terminology only) diagnosis, the case does not meet the criteria for ambiguous terminology only. This date will allow analysis of the primary site locations and frequency of cases that were originally diagnosed by ambiguous terminology and later confirmed by other conclusive method. This date will also allow for analysis of the time interval between cancer diagnosis based on ambiguous terminology and confirmation of the cancer diagnosis by conclusive means. The date must be greater than two months from the original/initial diagnosis date. .. NAACCR Data Standards and Data Dictionary Version 11
- CA; Date and time; Date of conclusive Dx; Dx; Misc; Miscellaneous; Oncology; Other; Point in time; QNT; Quan; Quant; Quantitative; Random; Spec; Time stamp; Timestamp; To be specified in another part of the message; TUMOR REGISTRY(NAACCR); Unspecified
Where you may see this code
You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.
Common synonyms
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.