PR-3 Denial Code: What CARC 3 Means and When You Can Bill the Patient

PR-3 pairs group code PR, Patient Responsibility, with Claim Adjustment Reason Code 3. X12 defines CARC 3 as Co-payment Amount. The payer processed the claim and paid its contracted share. The copay is the patient’s fixed per-visit fee under their plan. Post it to the patient ledger and bill the patient. A PR-3 denial code […]
Aortic Stenosis ICD-10: The FY2026 Coding, Documentation and Denial Guide

Quick answer In medical billing, the aortic stenosis ICD-10 code is I35.0, nonrheumatic aortic (valve) stenosis, which covers degenerative and calcific narrowing of the aortic valve that isn’t caused by rheumatic fever. Alternative aortic stenosis ICD-10 codes apply depending on what caused the disease, and on whether regurgitation appears alongside the narrowing. There’s no separate […]
ICD-10 Code for Atrial Fibrillation: The FY2026 I48 Coding and Denial Guide

The ICD-10 code for atrial fibrillation is I48.91 when the provider documents AFib without specifying the type. Nine billable codes sit in the I48 family, and choosing the wrong one costs you a CC on inpatient claims or a denial on outpatient ones. That number catches most billing teams off guard. Six codes cover fibrillation, […]
CPT code 93460 billing guide for cardiology practices

CPT code 93460 reports a combined right and left heart catheterization with coronary angiography performed in one session. The code covers catheter placement, intraprocedural injections, imaging supervision and interpretation, and left ventriculography when performed. One base code describes the whole documented combination, so the component codes don’t get billed alongside it. Performing every component doesn’t […]
CPT Code 93454: Billing Guidelines, Documentation and 2026 Updates

CPT code 93454 reports selective catheter placement in the native coronary arteries for diagnostic coronary angiography. The code covers the intraprocedural coronary injections, the angiographic imaging, and the imaging supervision and interpretation that go with that study. It doesn’t include right heart catheterization or left heart catheterization, and it doesn’t represent bypass graft angiography. Coders […]
CPT Code 93458: 2026 Billing, Modifiers, Documentation and Denial Prevention

The 93458 CPT code description covers diagnostic coronary angiography performed with a left heart catheterization during the same session. The code also covers imaging supervision and interpretation. Left ventriculography counts as included when performed, though nothing in the code requires an LV gram on every case. Right heart catheterization falls outside the CPT 93458 scope […]
CPT 93297 Billing Guide: 2026 Rules, Modifiers and Reimbursement

CPT 93297 reports remote interrogation of an implantable cardiovascular physiologic monitor system covering a period of up to 30 days. The service includes analysis of one or more recorded physiologic cardiovascular data elements from all internal and external sensors, along with clinical review and a report by a physician or other qualified health care professional. […]
CPT Code 93295: 2026 Billing Rules, 90-Day Period, and CPT 93296

CPT code 93295 reports the interim analysis, review, and report performed remotely by a physician or qualified healthcare professional for a single, dual, or multiple-lead implantable cardioverter-defibrillator, including CRT-D systems, over a period of up to 90 days. Technical data acquisition is reported separately with CPT 93296. Three codes sit side by side here, and […]
CPT 93298: 2026 Billing, Modifiers, Reimbursement, and Denial Guide

CPT 93298 reports remote interrogation device evaluation of a subcutaneous cardiac rhythm monitor across a monitoring period of up to 30 days. The billed work covers analysis of recorded heart rhythm data, clinical review, and a report. A physician or qualified healthcare professional performs that professional portion. An implantable loop recorder is the common device. […]
93294 CPT code billing guide 2026: frequency, documentation, and 93296

The 93294 CPT code is the physician or qualified healthcare professional’s analysis, review, and report for remote interrogation of a single-lead, dual-lead, multiple-lead, or leadless pacemaker system across a monitoring period of up to 90 days. The technical half of that same service goes on CPT 93296. Four things sink these claims. The patient turns out to […]