# XS Modifier Coder

> XS Modifier Coder (iPhone/iPad app by Joseph Gadzia.)

- Source: https://appshunter.io/ios/app/xs-modifier-coder/id6778205735 (this page in markdown: same URL + `.md`)
- Developer: [Joseph Gadzia](https://appshunter.io/developer/6778205857)
- Category: Reference, Education
- Price: $0.99
- Age rating: 4+
- Requires: iOS 26.5 · 50 MB
- Languages: American English
- Released: 2026-06-12
- Data updated: 2026-07-24
- User reviews in markdown: https://appshunter.io/ios/app/xs-modifier-coder/id6778205735/reviews.md

## What is XS Modifier Coder?

XS Modifier Coder helps medical coders, billers, and healthcare professionals quickly identify CPT code combinations that may require modifier XS based on CMS National Correct Coding Initiative (NCCI) Procedure-to-Procedure (PTP) edit data.

Features:

• Uses current CMS NCCI PTP edit data
• Fast CPT code entry and analysis
• Quick CPT code buttons for commonly used codes
• Customizable quick code list
• Valid CPT code verification
• Highlights CPT codes that may require modifier XS
• Simple and easy-to-use interface
• Designed for dermatology, surgical, and procedural coding workflows

This application is intended for educational and coding reference purposes only. Users are responsible for verifying payer-specific requirements and ensuring coding compliance. CMS guidance and payer policies may change over time.

This application is not affiliated with, endorsed by, or sponsored by the Centers for Medicare & Medicaid Services (CMS).

## Chart rankings

- #199 in Top Paid · Reference (US App Store)


## Version history (last 2 releases)

### 1.1 — 2026-07-11

Added Medicare non-billable combination warnings.
Added saved rules for mutual XS modifier combinations.
Added alphabetic code entry option.
Expanded quick code list.
Updated PTP analysis logic.

### 1.0 — 2026-06-12

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-24.*