CPT® 90, Under Provider Services and Ambulatory Service Center Modifiers
The Current Procedural Terminology (CPT®) code 90 as maintained by American Medical Association, is a medical procedural code under the range - Provider Services and Ambulatory Service Center Modifiers.
Get the full picture on this code.
Start a FREE 2-WEEK TRIAL of Codify by AAPC.
Lay Term
Summary
Append modifier 90 to a laboratory or pathology test when a reference, or outside, laboratory performs the test instead of the treating or reporting provider.
For explanation, terminology, tips and additional info
start codify free trial.
Modifier Guidelines
Related Articles
Read a CPT® Assistant article by subscribing to Code Connect Today!
Search across Medicare Manuals, Transmittals, and more. For FREE access, register now!