Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
CareerCenter
Medical Coding Job Board
Log in Register free account

Need help choosing the right code?

Ask CasePilot about procedures, modifiers, bundling, and coding guidance.

Try CasePilot
CPT®
0523U

CPT® Code 0523U

Official Description

Oncology (solid tumor), DNA, qualitative, next-generation sequencing (NGS) of singlenucleotide variants (SNV) and insertion/deletions in 22 genes utilizing formalin-fixed paraffinembedded tissue, reported as presence or absence of mutation(s), location of mutation(s), nucleotide change, and amino acid change

© Copyright 2026 American Medical Association. All rights reserved.

Short Descr ONC SOLTUM DNA NGS SNV 22GEN
Medium Descr ONC SOLID TUMOR DNA QUAL NGS SNV 22GEN FFPE TISS
Long Descr Oncology (solid tumor), DNA, qualitative, next-generation sequencing (NGS) of singlenucleotide variants (SNV) and insertion/deletions in 22 genes utilizing formalin-fixed paraffinembedded tissue, reported as presence or absence of mutation(s), location of mutation(s), nucleotide change, and amino acid change
APC Status Indicator Service Paid under Fee Schedule or Payment System other than OPPS
Berenson-Eggers TOS (BETOS) none
MUE Not applicable/unspecified.
Date
Action
Notes
2026-01-01 Added First appearance of addition in codebook.
2025-01-01 Added Code Added.
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"