Measurement and Monitoring Terms

Get definitions for terms found in the Measurement and Monitoring section used in ICD-10-PCS procedure codes. These definitions may also provide additional explanation or examples in their use.

Measurement and monitoring section codes represent procedures for determining the level of a physiological or physical function. Measurement and monitoring procedure codes have a first character value of “4”. The second character value for body system is either physiological systems or physiological devices.

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Measurement and Monitoring

Operation
Approach

Terms to Approach

External: Procedures performed directly on the skin or mucous membrane and procedures performed indirectly by the application of external force through the skin or mucous membrane
Open: Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
Percutaneous: Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure
Percutaneous Endoscopic: Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure
Via Natural or Artificial Opening: Entry of instrumentation through a natural or artificial external opening to reach the site of the procedure
Via Natural or Artificial Opening Endoscopic: Entry of instrumentation through a natural or artificial external opening to reach and visualize the site of the procedure