# Interpreting MG Breast versus MG Guidance codes

**URL:** <https://forum.loinc.org/t/interpreting-mg-breast-versus-mg-guidance-codes/3059>\
**Category:** General\
**Created:** [April 23, 2026, 4:38pm UTC](https://forum.loinc.org/t/interpreting-mg-breast-versus-mg-guidance-codes/3059 "2026-04-23T16:38:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![LAndersenNCQA](https://forum.loinc.org/letter_avatar_proxy/v4/letter/l/7cd45c/32.png) [@LAndersenNCQA](https://forum.loinc.org/u/LAndersenNCQA)\
**Post date:** [April 23, 2026, 4:38pm UTC](https://forum.loinc.org/t/interpreting-mg-breast-versus-mg-guidance-codes/3059/1 "2026-04-23T16:38:53Z")

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Good morning,

I am seeking feedback on the intended use of the MG codes. I am trying to identify which codes represent mammograms where the purpose was to detect, diagnose or monitor breast tissue. I identified the following codes as appropriate (there are more but these are two examples):

- 46336-4 (MG Breast - left Single view)
- 72138-1 (DBT Breast - left Diagnostic)

The ScaleType is Document and my \*assumption\* is that the document would contain the interpretation/results. Is it correct that these codes would **never** be used outside of the purpose to detect, diagnose or monitor breast tissue (for example, taking an image solely to identify the placement of a device)?

Is it correct that the “MG Guidance” codes should be used when the mammography was performed for device placement purposes? These codes are also Document so I \*assume\* the document describes the device placement procedure (and possibly the final position of the device)?

\*I am not a clinician so I’ve made some assumptions based on the basic knowledge I have about mammography. Apologies if some of these are incorrect.

Thank you for any help you can provide! 😀