CPT Code 37799: Unlisted Procedure, Vascular Surgery
Unlisted procedure codes get denied more often than any other code category in vascular surgery billing. The reason is rarely clinical. It comes down to documentation. When a vascular surgeon performs a procedure that has no matching CPT descriptor, the claim for CPT Code 37799 lands on a human reviewer’s desk rather than an automated […]
CPT Code 99601: Home Infusion/Specialty Drug Administration
Home infusion claims are among the most frequently denied in outpatient billing. Coders misread the 2-hour threshold, forget to append the add-on code for extended visits, or fail to document all time components the NHIA standard includes. One misapplied code can trigger a denial cascade that takes weeks to resolve. CPT Code 99601 covers home […]
CPT Code 50200: Renal Biopsy Percutaneous Billing Guide
Renal biopsy claims are among the most consistently denied urology procedures in Medicare billing. The reason is rarely clinical: it is almost always a documentation gap, a missing laterality modifier, or an ICD-10 code that does not meet specificity requirements. Practices that understand CPT code 50200 at the billing level, not just the clinical level, […]
CPT Code 58700: Salpingectomy Billing Guide 2026
Salpingectomy claims generate a disproportionate share of OB/GYN billing denials. The reason is almost always the same: coders use CPT Code 58700 when a different code applies, append modifier 50 when the descriptor already covers bilateral procedures, or pair the wrong ICD-10 diagnosis code with the claim. Each error delays payment and creates audit exposure. […]
CPT Code 20900: Bone Graft, Any Donor Area (Minor or Small)
Bone graft harvesting denials are more common than most orthopedic coders expect. The separate incision requirement trips up even experienced billers, and payer-specific bundling rules add another layer of complexity. CPT Code 20900 covers a minor bone graft procedure, but billing it correctly depends on documentation that many operative notes simply do not include. This […]
CPT Code 64999
Pain management coders lose reimbursement on CPT Code 64999 not because the claim is wrong, but because the documentation is incomplete. Payers treat unlisted procedure codes differently from standard CPT codes: they require manual review, and without a compelling operative report and a well-constructed cover letter, adjudicators default to denial. According to the American Medical […]
CPT Code 45380: Colonoscopy with Biopsy Billing Guide
Colonoscopy denials pile up fast when the wrong code is submitted. A patient goes in for a routine screening, a biopsy is taken, and suddenly the claim crosses into diagnostic territory – with different cost-sharing implications, different modifiers, and different payer rules. CPT Code 45380 sits at the center of this transition. Getting it right […]
CPT Code 75574: Cardiac CT Angiography Billing Guide
Cardiac CT claim denials for CPT code 75574 often come down to the same handful of avoidable problems: wrong modifier, missing documentation of 3D postprocessing, or a non-covered ICD-10 pairing. For radiology coders and cardiology billing staff managing high-volume coronary CTA workflows, getting these details right on the first submission is the difference between clean […]
CPT Code 93356: Myocardial Strain Imaging Billing Guide
Cardiology billing teams consistently report that add-on codes generate a disproportionate share of claim denials. When a service requires a primary procedure code plus a supplemental code, each with its own documentation standard, the margin for error doubles. CPT Code 93356 sits squarely in that category. Introduced as a Category I code on January 1, […]
CPT Code 76857: Limited Pelvic Ultrasound Billing Guide
Radiology claims auditors flag limited pelvic ultrasounds more often than most coders expect. The confusion between CPT Code 76857 and its close relatives, 76856 and 76830, accounts for a significant share of denied claims in OB/GYN, urology, and fertility billing. Selecting the wrong code, or billing post-void residual measurement separately, can trigger both recoupment demands […]