Billing Guides for Primary Care
Plain-English answers to the billing questions your practice deals with every day.
99214 vs 99215: When to Bill Each Code
Learn the difference between 99214 and 99215: when each applies, what documentation you need, and the $40/visit revenue impact.
6 min readPatient CommunicationSplit Billing Explained: Why Your Patient Got Two Charges From One Visit
Why patients get two charges from one visit, how AWV + E/M same-day billing works, and how to explain it without losing their trust.
5 min readAdd-On CodesG2211 Add-On Code: What It Is and How to Bill It (2026)
G2211 adds ~$16 to qualifying Medicare visits for ongoing chronic care. Here's which visits qualify and how to start billing it.
5 min readComplianceWhat to Do When a Payer Says You're Underbilling
Got a letter saying you're underbilling? Here's what it actually means, whether you should worry, and what action to take.
5 min readGetting StartedFirst-Year Attending Billing Guide: Family Medicine Edition
The billing basics residency didn't teach you: E/M coding, codes you'll use daily, and the ones you're probably missing.
7 min readSame-Day BillingAWV + Problem Visit Same Day: How to Bill Correctly
Yes, you can bill AWV and a problem visit the same day. Here's how to do it correctly with modifier -25.
5 min readModifiersModifier 25: When to Use It and Common Mistakes
When to use modifier -25, when to skip it, and the common mistakes that trigger audits and denials.
5 min readPatient CommunicationPatient Billing FAQs: What Your Front Desk Should Know
The top billing questions patients ask and script-ready answers your front desk team can use today.
6 min readGetting StartedThe Billing Codes You Didn't Learn in Residency
The codes, concepts, and documentation tips that residency never taught you.
14 min readGetting StartedHow to Choose an AI Billing Tool That Actually Gets the Numbers Right
For small primary care practices looking for AI-powered billing help grounded in real CMS data.
7 min readDenialsMedical Billing Denial Codes: What They Mean and How to Fix Them
CO-4, CO-97, CO-16, PR-96 and more. What each denial code means and exactly how to fix it.
8 min readRevenue CodesHow to Bill Transitional Care Management (TCM) in Primary Care: CPT 99495 and 99496
TCM reimburses $178-$248 per patient. Most practices never bill it. Here's how.
7 min readICD-10 CodingThe ICD-10 Codes That Get Primary Care Claims Denied (and How to Pick the Right One)
I10 vs I11, E11.9 vs E11.40, Z00.00 vs Z00.01. The diagnosis coding mistakes that cause denials and how to fix them.
10 min readModifiersMedical Billing Modifier Cheat Sheet: The 20 Modifiers You Actually Use
Modifier 25, 59, XE, 50, 76, 26, TC and more. When to use each one, audit risk levels, and common mistakes.
8 min readBilling FundamentalsPlace of Service Codes: Which One to Use and Why It Changes Your Reimbursement
POS 11 vs 21 vs 02 vs 10. How the two-digit code on your claim determines whether you get office or facility rates.
7 min readRevenue CodesHow to Bill Phone Calls in Primary Care: CPT Codes 99441, 99442, 99443
That 15-minute call about lab results was billable. Here's how to capture $1,680/month per provider from phone calls.
7 min readAdd-On CodesG2211 Add-On Code: Who Qualifies, How to Document, and Why Most Practices Don't Bill It
$17 per visit, 20 visits per day, $6,800/month. G2211 captures work you're already doing. Here's how to start billing it.
8 min readFacility BillingUB-04 Billing: Bill Types, Revenue Codes, and Occurrence Codes Explained
Bill type 111 vs 131, revenue code 0250, occurrence span code 70. Every UB-04 field explained in plain English.
9 min readDenialsHow to Appeal an Insurance Denial: Step-by-Step Guide
Claim denied? Step-by-step appeal process with payer deadlines, denial code fixes, appeal letter template, and escalation options.
12 min read