CO-22 Denial Code: Complete Guide to Coordination of Benefits Denials
CO-22 DENIAL CODE: AT A GLANCE Code CARC 22 Official CARC Name Claim Adjustment Reason Code 22 Group Code CO: Contractual Obligation Official X12 Definition “This care may be covered by another payer per coordination of benefits” Active Since January 1, 1995 Last Modified September 30, 2007 (still active as of 2026) Common Remark Code […]
CO-16 Denial Code: Official Definition, Causes, Remark Codes and Step-by-Step Resolution [2026]
What Is the CO-16 Denial Code — Official X12 Definition Official Definition — CARC 16 (X12, Last Reviewed March 1, 2026): “Claim/service lacks information or has submission/billing error(s) which is needed for adjudication.” X12 Usage Rules: The CO-16 denial code is CARC number 16 on the official X12 Claim Adjustment Reason Code list, which is […]
CPT Code 99202: Payer-Specific Rules, Compliance Pitfalls and Clean Claim Playbook [2026]
The CMS Comprehensive Error Rate Testing (CERT) program flags evaluation and management codes as the largest source of Medicare improper payments, year after year. CPT code 99202 is an evaluation and management code used for new patient office or other outpatient visits that require straightforward medical decision making or 15 to 29 minutes of total […]
Insurance Eligibility Verification and Prior Authorization: The Complete Guide for Healthcare Providers [2026]
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A patient walks in. Your team provides the service. The claim goes out. Then it bounces back, denied. Not for a coding error. Not for missing documentation. The patient’s insurance had lapsed three days before the appointment, and nobody caught it. Or the procedure needed prior authorization that was never requested. Either way, that revenue […]
CPT Code 99215: Complete Guide to Time, MDM, Reimbursement & Documentation [2026 Updated]
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The 99215 CPT code is the highest-level evaluation and management (E/M) code for an established patient office or outpatient visit. Per the AMA’s official CPT descriptor, it covers encounters requiring a medically appropriate history and/or examination and high complexity medical decision making, or 40 to 54 minutes of total provider time on the date of […]
How to Fill Out CMS 1500 Form: Complete Box-by-Box Instructions
Learning how to fill out a CMS 1500 form correctly is one of the most practical skills in medical billing. Every box you complete determines whether you get paid, how fast you get paid, and whether the claim survives payer adjudication. The form has 33 items, each with specific rules. A single wrong entry can […]
CPT Code 90834: How to Bill, Get Reimbursed & Prevent Claim Denials [2026]
CPT code 90834 is the most commonly billed psychotherapy code in outpatient behavioral health, and it’s also one of the most frequently denied. Incorrect time documentation, wrong modifier usage, same-day billing violations, and insufficient clinical notes account for the majority of 90834 claim rejections, costing practices thousands in lost revenue every month. Procedure code 90834 […]
G2211 Code: Complete Guide to Billing Guidelines, Reimbursement & 2025-2026 Updates
G2211, commonly searched as the G2211 CPT code, is technically a HCPCS Level II code, not a CPT code. CMS created this add-on code specifically to capture the inherent complexity of evaluation and management visits involving longitudinal care. It recognizes the extra cognitive work that goes into managing patients you see over time, not just […]
CPT Code 99205: Complete Guide to Reimbursement, Time, Documentation & Billing (2026 Updated)
CPT code 99205 is the highest-level evaluation and management (E/M) code for new patient office or outpatient visits. To bill it, you need either high complexity medical decision making (MDM) or a minimum of 60 minutes of total provider time on the date of service. The 2026 Medicare reimbursement rate is $236.81 (non-facility). This guide […]
CPT Code 99204: Complete Billing, Reimbursement & Documentation Guide [2026]
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CPT Code 99204: Quick Reference Field Value Code CPT 99204 Description New patient office/outpatient E/M visit MDM Level Moderate complexity Time Range 45 to 59 minutes total on date of encounter Patient Type New patient (no services in prior 3 years) Work RVU (2026) 2.60 Total RVU (2026) 3.56 Est. Medicare Payment ~$118 to $120 […]