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LOINC Code 42053-9: 3rd course biological response modifier therapy Cancer Rx

42053-9 is a LOINC code used to identify 3rd course biological response modifier therapy Cancer Rx 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 3rd course treatment.biological response modifier therapy. It is commonly used with the system or sample type Subsequent cancer Rx.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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 3rd course treatment.biological response modifier therapy. It is commonly used with the system or sample type Subsequent cancer Rx.

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

  • 3rd course biological response modifier therapy Cancer Rx
  • 3rd course treatment.biological response modifier therapy
  • Codes for the type of biological response modifier therapy given as part of the second course of treatment. Central registries currently collecting this data item should follow the 1998 ROADS Manual coding instructions. The codes are the same as those for Immunotherapy, 1998 ROADS Manual, p. 243.. NAACCR Data Standards and Data Dictionary Version 11
  • 3rd course BRM; 3rd course Tx; BRM; CA; Identity or presence; Nominal; Oncology; Point in time; Random; Treatment; TUMOR REGISTRY(NAACCR); Tx

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

3rd course biological response modifier therapy Cancer Rx3rd course BRM Cancer Rx3rd course treatment.biological response modifier therapyTUMRRGTPridPtSubsequent cancer Rx

Frequently asked questions

Code details

Code42053-9
SystemLOINC
Display name3rd course biological response modifier therapy Cancer Rx
Description3rd course treatment.biological response modifier therapy
Short name3rd course BRM Cancer Rx
Component3rd course treatment.biological response modifier therapy
PropertyPrid
TimingPt
System (specimen)Subsequent cancer Rx
ScaleNom
ClassTUMRRGT
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.16
Last changed2.32

Part names

3rd course treatment.biological response modifier therapyPridPtSubsequent cancer RxNomPresence or IdentityPoint in time (spot)

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.

LOINC Code 42053-9 | HealthAssure