Acute Kidney Injury ICD-10 Codes: N17.9 and the Full N17 Family Explained for FY 2027
Every acute kidney injury ICD-10 claim that goes out coded as N17.9 when the chart actually documents acute tubular necrosis is a coding error, and on an inpatient claim it can mean a lower DRG. Coders defaulting to N17.9 without checking whether the physician documented tubular, cortical, or medullary necrosis are leaving revenue on the […]
Top 10 Medical Billing Audit Companies in the USA (2027)
Medical billing audit companies review your claims, codes, and clinical documentation to find billing errors before a payer does. The good ones check CPT, HCPCS, ICD-10-CM, and modifier use against the chart, then help you fix denials, recover underpayments, and lower your audit risk. Medicare’s fee-for-service improper payment rate was 6.55% in fiscal 2025, or […]
Yearly Medical Billing Audit Checklist for 2026: What to Review for Each Payer Before December 31
Claims for January 2026 visits reach Medicare’s one-year filing limit in January 2027. Any payer that audits you next spring will read notes your providers signed months ago. A problem you catch in December costs a corrected claim or a refund. Found by a payer, it can cost a records request and a recoupment. You’ll […]
UPIC Audit: What a Unified Program Integrity Contractor Wants and How to Respond
A UPIC audit is a fraud, waste, and abuse review run by a Unified Program Integrity Contractor, a private company the Centers for Medicare & Medicaid Services (CMS) hires to investigate suspect Medicare and Medicaid billing. Unlike a routine coding check, a UPIC can suspend your payments or refer you to law enforcement. The clock […]
RAC Audit: What Recovery Audit Contractors Review and How to Respond
A RAC audit is a post-payment review of Medicare fee-for-service claims by a Recovery Audit Contractor (RAC), a private company the Centers for Medicare & Medicaid Services (CMS) pays to find overpayments and underpayments. Medicare already paid the claim. The RAC checks whether it should have. Most RAC audits start with a records request and […]
How to Prepare for a Medicare Audit in 2027
A Medicare audit tends to start small: a contractor working for the Centers for Medicare & Medicaid Services (CMS) asks for a handful of patient records. Answer late or with thin notes, and Medicare can deny those claims, then send a demand to repay money it already paid you. That second step is the one […]
