LOINC Code 73964-9: Body muscle mass Calculated
73964-9 is a LOINC code used to identify Body muscle mass Calculated 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 Body muscle mass. It is commonly used with the system or sample type ^Patient.
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 Body muscle mass. It is commonly used with the system or sample type ^Patient.
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
- Order vs observation: Both
- Method: Calculated
What it does not mean
- The code identifies the observation or test, not the actual result.
Key facts
- Body muscle mass Calculated
- Body muscle mass
- Body muscle mass is equal to the patient's total weight (kg) times their body muscle percentage (see LOINC 73965-6). This code represents muscle mass only. Other instruments or methods may be used to lean body weight (e.g. see LOINCs 8342-8 and 8343-6), which includes muscle, bone (skeletal) and organs - everything but body fat (e.g. LOINC 41982-0).
- bod; Bodies; BODY WEIGHT.MOLEC; Calc; Calculation; Musc; Muscl; Point in time; QNT; Quan; Quant; Quantitative; Random
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.