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Medical Coding Guides & Articles

Understand modifier definitions, usage requirements, and common billing scenarios.

CPT Coding Basics Articles

Tips for finding the right CPT codes quickly and accurately

A complete overview of the CPT code categories and what they include

Learn how Global Periods work and how they affect billing.

Understand the difference and how to bill each correctly.

How to Search CPT Codes

0, 10, and 90-day Global Periods

Professional vs Technical Component

Understanding CPT Code Categories

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Postoperative Modifiers

Modifier 77

Return to Operating Room

Modifier 78

Modifier 79

Modifier 91

Different Physician Repeat

Unrelated Procedure

Repeat Diagnostic Test

Medicare Modifiers

Modifier GA

GA

Voluntary Notice Issued

GY

GX

GZ

Modifier GX

Modifier GY

Modifier GZ

Waiver on File

Excluded By Medicare

No Waiver on File

X Modifiers

Modifier XE

XE

Separate Practitioner

XS

XP

XU

Modifier XP

Modifier XS

Modifier XU

Separate Encounter

Separate Structure

Non Overlapping Service

HCPCS Modifiers

Modifier RT

RT

Left Side Procedure

TC

LT

JW

Modifier LT

Modifier TC

Modifier JW

Right Side Procedure

Technical Component

Discarded Drug Amount