The percentage of muscle mass on bodymass is often used as a measure for fitness. Body Mass correlates to the basal metabolic rate (BMR).


Muscle Mass is a specific data object to store muscle mass as percentage of bodymass respectively bodyweight.


– Documentation of muscle mass
– For measurements via analytic balance in ambulant settings
– Calculate composition of body weight
– Actual or past measurements
– Exact measurement or Calculation

Not use

– Do not use for estimation
– Do not use for determination of bone mass due to other methods

Data Model

The Muscle Mass is a measurement object without any specific attributes. See Measurement for more information.


If past measurements should be recorded, the start date must contain the date of measurement.

Parameter Codes

Following LOINC codes can be used to specify the parameter code:

loinc_num component system property time_aspct scale_typ method_typ
73964-9 Body muscle mass ^Patient Mass Pt Qn Calculated
73965-6 Body muscle mass/body weight ^Patient MFr Pt Qn Measured

Or use the CGM LOINC add-on:

Code Code Text
XCG80082-1 bone mass by balance


See Measurement Enums for more information.


See Measurement Catalogs for more information.

Update Rhythm

Because various factors can have an effect on Muscle Mass, such as changes in weight or lifestyle, the Muscle Mass object can be updated up to several times a week.

Recommended rules:
– Maximum once a week if muscle mass is constant.
– Maximum once a day if muscle mass varies.


See Measurement Schema for further information.

Compatible Standards

No EHR or Tenscan standards.