Medical billing is the process of submitting claims to insurance companies or patients for reimbursement of medical services, involving coding, claim generation, and following up on payments to ensure healthcare providers get paid.
You pull up the remittance advice and there it is again. CO-4. The procedure code is inconsistent with the modifier used, or a required modifier is missing. You know the claim was clean. The documentation supports the visit. And yet here you are, staring at another denial that isn’t about medical necessity or eligibility at … Read more
Iron Deficiency Anemia ICD-10: D50.9 + Coding Rules
CKD ICD-10 Codes: N18.1–N18.6 Stages, N18.9 & ESRD (2026 Guide)
Last medically reviewed: August 2026 Short answer: M54.5 (low back pain) was retired on October 1, 2021. It’s no longer a valid billing code. In 2026, use M54.50 (unspecified), M54.51 (vertebrogenic), or M54.59 (other low back pain) instead. Most pages still treat M54.5 as a working code. That’s wrong and it’s costing people claim denials. Let me explain what happened, what the code … Read more
A referral is your PCP saying “you need to see a specialist.” Prior authorization is insurance saying “we’ll pay for it.” HMO plans always need a referral, PPO usually not, POS/Medicare Advantage/Medicaid MCO depends. Missing referral = specialist visit denied. 8% of in-network denials are for missing referral or auth. Referral goes in Box 23 on claim. Published: Aug … Read more
Global period is a CMS payment rule that bundles pre-op care, surgery, and routine post-op follow-ups into ONE payment for 0, 10, or 90 days. Postoperative care is the actual clinical work (wound checks, pain management) you do after surgery. Routine postoperative care inside the global period is NOT separately billable – only unrelated problems, return to OR, … Read more
Reviewed by Maria Ellis, BSN, RN, CCM a board-certified case manager with 14 years in utilization review and appeals for two national payers and a large academic hospital system. Reviewed August 2026. The denial letter is one page long. It says your surgery, scan, drug, or therapy isn’t “medically necessary.” That word necessary sounds final. It isn’t. I’ve … Read more
You’ve got a CO-97 sitting in your queue. Before you touch it, answer one question. Can this denial ever be paid? Because two of the five things that trigger a CO-97 are permanently unwinnable. If you appeal those, you’re burning $25 of staff time to lose. And three of them pay out at a very … Read more
1. Introduction: Overcoming the 2026 Medical Claim Denial Spike According to recent healthcare industry benchmarks, claim denial rates have reached an unprecedented 46% across medical practices and billing organizations in 2026. With insurance payers leveraging automated claim scrubbing algorithms and AI-driven utilization management tools, even minor billing irregularities result in immediate claim rejections and payment withholding. … Read more
1. Introduction: The Rise of Remote Care Reimbursement in 2026 Remote Patient Monitoring (RPM) and Remote Therapeutic Monitoring (RTM) have evolved from temporary pandemic-era tools into permanent, highly lucrative components of medical practice revenue. When executed correctly, an active RPM program creates a steady stream of predictable monthly recurring revenue while dramatically improving clinical outcomes for chronic … Read more