Medical Billing 101 – Free Denial Code, CPT & RCM Guides

Most Used RCM & Denial Resolution Guides

• Appeal Letter Generator Build an editable payer appeal letter from the denial code, claim details and the arguments that fit.
• Timely Filing & Appeal Deadline Calculator Work out the claim, corrected claim or appeal deadline and how many days you have left.
• Denial Code Lookup (CARC & RARC) Find what a denial code means in plain English and the steps to fix it.
• CO-97 Bundling Denials: NCCI Edits and Modifiers Check the NCCI edit, decide whether modifier 59 or an X modifier applies, and correct or appeal.
• CO-16 Missing Information Denials Read the remark code, fix the missing or invalid claim data and resubmit.
• CO-29 Timely Filing Denials Prove the claim went out on time, or find the exception that lets you appeal.
• CO-50 Medical Necessity Denials Match the diagnosis to the coverage policy and build the records for an appeal.
• ER Visit Denied as Not an Emergency Use the prudent layperson rule to appeal an emergency room denial.
• About the Author: Manikandan J, CPC, CRCR Who writes and fact-checks these guides, with 10+ years in US revenue cycle management.